[EnB] 100 Mock MCQ Questions on Science Tech, Environment and Biodiversity

MK Pandey Fast track to objective arithmetic
  1. Instructions
  2. Question 1 to 20
  3. Question 21 to 40
  4. Question 41 to 60
  5. Question 61 to 80
  6. Question 81 to 100
  7. Answers

Instructions

  • 100 questions worth 2 marks each = total 200 marks.
  • Penalty for wrong answer= Minus 0.67 (=1/3rd of the mark allotted to correct answer.)
  • time limit 2 hours
  • If you cannot solve some of these question, don’t get demotivated. In UPSC there will be always some question from outside of what you’ve prepared, but you’re not required to tick 100/100 to crack prelims.

Question 1 to 20

  1. Which of the following concepts can be used to study the rate of acceleration of the Universe?
  1. Supernovae Explosions.
  2. Dark Matter.
  3. Dark Energy.
  4. Black Holes.
  1. 1 & 3 only.
  2. 1 & 2 only.
  3. 2, 3 & 4 only.
  4. 1, 3 & 4 only.
  1. Which of the following can be a trigger for Coral Bleaching?
  1. Increase in ocean temperature.
  2. Decrease in ocean temperature.
  3. Decline in Zooplankton levels.
  4. Changes in salinity.
  5. Elevated sea levels due to global warming.
  1. All except 2.
  2. All except 2 & 4.
  3. All except 5.
  4. None of the above options are correct.
  1. The Basel Convention on the Control of Trans boundary Movements of Hazardous Wastes and Their Disposal, usually known as the Basel Convention:
  1. It is an international treaty that was designed to reduce the movements of hazardous wastes from developed to less developed countries.
  2. It does not address the movement of radioactive waste.
  1. 1 only.
  2. 2 only.
  3. Both.
  4. None.
  1. Which of the following statements are correct with regard to Red tide – a term used to describe Harmful Algal Blooms (HABs) in marine coastal areas.
  1. These blooms are not associated with tides.
  2. HABs tint the seawater to a reddish color.
  3. Not all algal blooms are harmful, even those involving red discoloration.
  1. 1 & 3 only.
  2. 1 & 2 only.
  3. 2 & 3 only.
  4. 1, 2 & 3.
  1. Which of the following statements is/are correct:
  1. Ozone Depletion causes reduction in stratospheric and upper tropospheric temperatures.
  2. Increase in Green House Gases causes reduction in stratospheric and upper tropospheric temperatures.
  1. 1 only.
  2. 2 only.
  3. Both.
  4. None.
  1. Which of the following statements is/are correct with regard to Ozone Depletion:
  1. Ozone hole is measured in terms of ozone concentrations, which is expressed in Dobson units.
  2. The major cause for Ozone Depletion is the presence of CFCs in stratosphere – CFCs are entirely man made and not found naturally.
  1. 1 only.
  2. 2 only.
  3. Both.
  4. None.
  1. Which of the following statements is/are correct with regard to Vitamin D:
  1. Vitamin D is produced in the skin by ultraviolet light.
  2. Higher levels of Vitamin D are associated with higher morbidity.
  3. Body has no mechanism to prevent sunlight from producing too much Vitamin D.
  1. 1 & 3 only.
  2. 1 & 2 only.
  3. 2 & 3 only.
  4. 1, 2 & 3.
  1. If the Arctic Ice was somehow replaced with dense forest, which of the following situation may arise:
  1. It will accelerate Global Warming.
  2. It will decelerate Global Warming.
  3. It may or may not affect Global warming.
  4. It will have no affect on Global Warming.
  1. Recently Chinese scientists have developed Carbon Aerogel. Which of the following is/are correct about it:
  1. It is the second lightest material after Graphite aerogel.
  2. It has excellent elasticity.
  3. It is expected to play an important role in pollution control.
  4. It is expected to become ideal material for sound absorption.
  1. 2, 3 & 4 only.
  2. 2 & 4 only.
  3. 1 & 3 only.
  4. 1, 2, 3 & 4.
  1. Lantana – know as Phool Lakhri in local parlance is a shrub found in abundance in Himachal Pradesh. Which of the following statements are correct about it?
  1. It is a toxic weed and has affected the mountain diversity of the state.
  2. Lantana species are widely cultivated for their flowers.
  3. It is endemic to India.
  4. It is considered as potential fire hazard and it is combustible even when green.
  1. 1, 2 & 4 only.
  2. 2 & 4 only.
  3. 1 & 3 only.
  4. 1, 2, 3 & 4.
  1. Which of the following statements are correct about C & Ku Band that are used for satellite communications transmissions:
  1. The frequency of Ku Band is greater than C band.
  2. C band performs better under adverse weather conditions in comparison to Ku band.
  3. C band has a higher likelihood of terrestrial interference in comparison to Ku Band.
  1. 1, 2 & 3.
  2. 1 & 2 only.
  3. 1 & 3 only.
  4. 2 & 3 only.
  1. Which of the following statements are true regarding Soda Lake:
  1. Soda lakes are highly acidic lakes.
  2. Soda lakes are highly productive ecosystems.
  3. A critical geological condition for the formation of Soda Lake is the absence of soluble calcium or magnesium.
  4. Lonar and Sambhar lakes are examples of Soda lakes in India.
  1. 1, 2 & 3 only.
  2. 1 & 4 only.
  3. 2, 3 & 4 only.
  4. 3 & 4 only.
  1. Which of the following is/are the Industrial uses of Hydraulic Fracturing:
  1. Arousing production from oil and gas wells.
  2. To dispose of waste by injection into deep rock formations.
  3. As a method to measure the stress in the Earth.
  1. 1, 2 & 3.
  2. 1 only.
  3. 1 & 3 only.
  4. 2 & 3 only.
  1. Plasma arc technology is used for the disposal of waste, which of the following statements is/are correct with regard to this technology:
  1. It can be used for the disposal of hazardous and radioactive waste.
  2. Oxides of Sulphur and Nitrogen are the polluting gases produced in this process.
  3. This technology has not been tried anywhere in India.
  1. 1, 2 & 3.
  2. 1 & 2 only.
  3. 1 & 3 only.
  4. 3 only.
  1. What do you understand by the term ‘Dark Fermentation’:
  1. It is a method to reduce CO2 in the atmosphere.
  2. It is a method to produce Hydrogen as fuel from wastewater.
  3. It is a method to dispose nuclear wastes.
  4. It is a method to produce methane from organic waste.
  1. Which of the following statements are correct with regard to Hepatitis (A, B, C, D & E):
  1. Hepatitis is the inflation of Liver due to viral infection.
  2. Hepatitis B vaccine is enough to keep type D at bay.
  3. Type B & C are mainly transmitted through blood transfusion.
  4. Type A & E are caused due to exposure to polluted food and water.
  1. 1, 2 & 3 only.
  2. 1, 3 & 4 only.
  3. 2 & 4 only.
  4. 1, 2, 3 & 4 only.
  1. Which of the following functions are performed by the Liver:
  1. Plays a role in immunity.
  2. Helps in processing nutrients.
  3. Helps in maintaining bloods clotting capacity.
  4. Helps in purifying blood.
  1. 1, 2 & 3 only.
  2. 2, 3 & 4 only.
  3. 1 & 4 only.
  4. 1, 2, 3 & 4.
  1. Which of the following statements is/are correct with regard to Carbon Monoxide:
  1. It is produced in the human body.
  2. It helps in treating sickle cell anemia.
  3. It acts as a neurotransmitter.
  1. 1, 2 & 3.
  2. 1 only.
  3. 1 & 3 only.
  4. 2 & 3 only.
  1. Assertion: Viral Pneumonia does not require intensive care and treatment.

Reason: Viruses don’t respond to vaccines and antibiotics.

  1. Assertion & Reason both are correct and Reason is the correct explanation.
  2. Assertion is wrong but reason is correct.
  3. Assertion is correct but reason is wrong.
  4. Both Assertion & reason are correct but reason is not the correct explanation of reason.
  1. Which of the following statements is/are correct with regard to mobile touch screen technologies.
  1. When a user touches a capacitive touch screen some charge is transferred to the user from the screen.
  2. Capacitive touch screen technology has more life than resistive touch screen technology.
  3. Capacitive screens provide clearer image than resistive screens.
  1. 1, 2 & 3.
  2. 1 only.
  3. 1 & 3 only.
  4. 2 & 3 only.

Question 21 to 40

  1. The Rajasthan university of veterinary and animal sciences has set up a Emu breeding farm and is promoting Emu breeding in the state because:
  1. Emu meat has much lower fat compared to chicken, mutton, pork or turkey, & low in cholesterol, hence good for heart patients.
  2. Emu oil can be used to cure arthritis and joint pains.
  3. Emu oil is an analgesic, antiseptic and anti allergic.
  4. Emu oil is used in cosmetic products.
  5. Feathers are used to make artifacts & decorative items.
  6. Emu egg is a great nutritional supplement as one egg can feed an entire family.
  1. All except 3, 4 & 6.
  2. All except 3 & 4.
  3. All except 3.
  4. None of the above options are correct.
  1. A new vertical single bud technique has been implemented in some areas of Punjab for sugar cane cultivation. Which of the following statements are true with regard to this technique:
  1. This technique requires 85% fewer seeds than traditional method for the same field size.
  2. It reduces water consumption by 50 %.
  3. The yield is almost doubled.
  1. 1, 2 & 3.
  2. 1 only.
  3. 1 & 3 only.
  4. 2 & 3 only.
  1. Which of the following species are critically endangered:
  1. White bellied heron.
  2. Gangetic Dolphins.
  3. River Terrapins.
  1. 1, 2 & 3.
  2. 2 only.
  3. 1 & 3 only.
  4. 2 & 3 only.
  1. Which of the following statements are correct with regard to Siddha form of medicinal system:
  1. Siddha form of medicinal system is usually practiced in South India.
  2. Siddha is believed to be the oldest medicinal system in the world.
  1. 1 only.
  2. 2 only.
  3. Both.
  4. None.
  1. Which of the following statements is/are correct with regard to Siddha & Unani form of medicinal systems:
  1. Siddha system is based on the premise that only a healthy body can help develop a healthy soul.
  2. According to Unani medicine, management of any disease depends upon the diagnosis of disease.
  1. 1 only.
  2. 2 only.
  3. Both.
  4. None.
  1. Which of the following statements is/are correct with regard to Ayurveda form of medicinal systems:
  1. Hygiene is a central practice of Ayurveda medicine.
  2. According to Ayurveda suppressing natural urges is seen to be unhealthy, and doing so claimed to lead to illness.
  3. Ayurveda is related to the Vedic period in India.
  1. 1 only.
  2. 1 & 2 only.
  3. 2 & 3 only.
  4. 1, 2 & 3.
  1. Which of the following statements is/are correct with regard to Homeopathy form of medicinal systems:
  1. According to homeopathy a substance that causes the symptoms of a disease in healthy people will cure similar symptoms in sick people.
  2. Scientific community regards homeopathy as a sham.
  1. 1 only.
  2. 2 only.
  3. Both.
  4. None.
  1. Which of the following statements is/are correct with regard to Naturopathy:
  1. According to Naturopathy – Food is the only medicine hence no external medications are used.
  2. Performing prayer according to one’s spiritual faith is an important part of treatment.
  3. The treatment of all diseases is elimination of morbid matter from the body.
  1. 1 only.
  2. 1 & 2 only.
  3. 2 & 3 only.
  4. 1, 2 & 3.
  1. Which of the following statements is/are correct with regard to Sowa Rigpa medicinal system:
  1. This system is popular in the Himalayan region of India.
  2. It is similar to Ayurveda.
  3. It is believed that Buddha himself taught it.
  4. It includes few principles of Traditional Chinese medicinal systems.
  1. 1 & 4 only.
  2. 2 & 3 only.
  3. 1, 2 & 3 only.
  4. 1, 2, 3 & 4.
  1. Match the following: Mundane question. But one can expect at least one such question in any paper.
  1. National Institute of Homeopathy.
  2. National Institute of Siddha.
  3. National Institute of Unani Medicine.
  4. National Institute of Naturopathy.
  5. National Institute of Ayurveda.
  1. Chennai.
  2. Kolkata.
  3. Pune.
  4. Jaipur.
  5. Bengaluru.
  1. 1 – a, 2 – b, 3 – c, 4 – d, 5 – e.
  2. 1 – b, 2 – a, 3 – e, 4 – c, 5 – d.
  3. 1 – e, 2 – d, 3 – c, 4 – b, 5 – a.
  4. 1 – b, 2 – a, 3 – c, 4 – e, 5 – d.
  1. Which of the following are the potential benefits of Nuclear fusion reactors:
  1. Enough readily available fuel to last more than millions of years.
  2. No Green House gas emissions.
  3. Plants will produce more readily controllable nuclear wastes.
  4. Deuterium and Lithium can be used as potential fuels.
  1. 1, 2 & 3 only.
  2. 2, 3 & 4 only.
  3. 1 & 4 only.
  4. 1, 2, 3 & 4 only.
  1. Which of the following statements is/are correct about syngas:
  1. It is a mixture of carbon monoxide and hydrogen.
  2. It can easily be converted into gasoline through a process called steam reforming.
  3. It is easily storable.
  4. It is combustible and can be used as fuel in Internal combustion engines.
  5. Syngas has almost double the energy density of natural gas.
  1. All except 4.
  2. All except 5.
  3. All except 1 & 5.
  4. None of the above options are correct.
  1. Which of the following are the objectives of Mars Orbiter Mission scheduled to be launched by India in mid November this year:
  1. Detect Methane in the atmosphere of Mars.
  2. Map the surface composition of Mars.
  3. Measure atomic hydrogen in the atmosphere of Mars.
  4. Understand Martian dust storms.
  1. 1, 2 & 3 only.
  2. 2, 3 & 4 only.
  3. 1 & 4 only.
  4. 1, 2, 3 & 4 only.
  1. Which of the following statements with regard to two solar events – Solar Flare and Coronal Mass Ejection are correct:
  1. Coronal Mass Ejection (CME) can cause serious problems for electrical systems on Earth.
  2. Solar flares have no effect on terrestrial life.
  3. All CMEs are accompanied by solar flares.
  4. The Northern and Southern Lights (aurora borealis and aurora australis) are often associated with coronal mass ejections.
  5. Both solar flares and coronal mass ejections are the result of magnetic activity on the sun.
  1. All except 2 & 5.
  2. All except 2 & 3.
  3. All except 3.
  4. All the statements are wrong.
  1. Which of the following statements is/are correct about Lagrange point in the context of space terminology:
  1. Lagrange points are locations in space where gravitational forces and the orbital motion of a body balance each other.
  2. Lagrange points are locations in space where net force due to gravity is zero.
  3. There are five Lagrangian points in the Sun-Earth system.
  4. No such points exist in the Earth-Moon system.
  1. 2 & 3 only.
  2. 1, 3 & 4 only.
  3. 2, 3 & 4 only.
  4. 1 & 4 only.
  1. Which of the following statements is/are correct about Dark Matter:
  1. Dark matter does not interact with any electromagnetic radiation.
  2. Dark matter interacts with ordinary matter through gravity only.
  3. The force between dark matter and ordinary matter is repulsive.
  1. 1 only.
  2. 1 & 2 only.
  3. 2 & 3 only.
  4. 1, 2 & 3.
  1. Consider the following statements with regard to Thorium based nuclear power plants:

Assertion: Thorium cannot be used directly to produce nuclear energy.

Reason: Thorium does not contain any fissile material.

  1. Assertion & Reason both are correct and Reason is the correct explanation.
  2. Assertion & Reason both are correct but reason is not the correct explanation.
  3. Assertion is wrong, Reason is correct.
  4. Assertion is correct, reason is wrong.
  1. Which of the following Cyber attacks is related to India:
  1. Stuxnet.
  2. Flame.
  3. Titan Rain.
  4. GhostNet.
  1. To increase yield, the cows are injected with Oxytocin, a hormone banned in India under the Prevention of Cruelty to Animals Act and section 12 of Food and Drug Adulteration Prevention Act, 1960. Why is this hormone banned?
  1. Milk produced from such cows is unfit/harmful for human consumption.
  2. Cows injected with Oxytocin have a greater incidence of abortions, mastitis and lower conception rates.
  3. Calves born to Oxytocin injected cows suffer higher than normal infant mortality and delayed puberty.
  1. 1 only.
  2. 1 & 2 only.
  3. 2 & 3 only.
  4. 1, 2 & 3.
  1. Which of the following statements is/are correct with regard to the Solar cell technologies:
  1. Crystalline silicon solar cells have a greater market share than thin film solar cells.
  2. Thin film solar cells are cheaper than crystalline silicon solar cells.
  3. Crystalline silicon cells are more efficient than thin film solar cells.
  4. Both the technology operates on the same photovoltaic principle.
  5. Crystalline silicon solar cells are more environmental friendly to dispose than thin film solar cells at the end of their respective lives.
  1. All except 2 & 5.
  2. All except 2 & 3.
  3. All except 3.
  4. All the above options are wrong.

Question 41 to 60

  1. According to Western Ghats Ecological Expert Panel report – Ecologically Sensitive Areas are:
  1. Ecologically important.
  2. Economically important.
  3. Vulnerable to even mild disturbances.
  1. 1 only.
  2. 1 & 3 only.
  3. 3 only.
  4. 1, 2 & 3.
  1. Which of the following types of Coral Reefs are found in India:
  1. Atoll.
  2. Fringing.
  3. Barrier.
  1. 1 & 2 only.
  2. 1 & 3 only.
  3. 2 & 3 only.
  4. 1, 2 & 3.
  1. The union Ministry of Environment & Forest has introduced a new scheme called the ‘Emissions Trading Scheme’ which of the following statements is/are correct with regard to this scheme:
  1. This is a market-based scheme to reduce air pollution.
  2. It has been implemented only in 3 states till now.
  3. The scheme allows the Pollution control boards to set a cap on the level of pollution permitted in an industrial area, and then allows the industries to self regulate to ensure that pollution does not exceed this cap.
  4. This scheme is the first of its kind in the world.
  1. 1, 2, 3 & 4.
  2. 1 & 3 only.
  3. 2 & 3 only.
  4. 1, 2 & 3.
  1. Which of the following species is locally extinct in India:
  1. White bellied heron.
  2. Siberian Crane.
  3. The gyps Vulture.
  4. Forest owlet.

A.   1, 2 & 4 only.

B.   1 & 2 only.

C.    2 only.

D.   1, 3 & 4 only.

  1. Desertification can lead to:
  1. Decrease in food supplies.
  2. Decrease in water supplies.
  3. Migration.
  4. Loss of jobs.
  5. Global warming.
  1. All except 4 & 5.
  2. All except 5.
  3. All except 4.
  4. All the above options are wrong.
  1. Which of the following is true with regard to regulation of GM crops in India:
  1. At present GM crops are regulated under the purview of the Union Ministry of Agriculture.
  2. Ministry of Environment and forest has introduced a new bill to set up a new regulatory system for GM crops by the name Biotechnology Regulatory Authority of India (BRAI).
  3. The Bill proposes setting up BRAI under the Ministry of Science and Technology.
  4. BRAI will act as a single window clearance system for products of modern biotechnology, including GM crops.
  1. 1, 2 & 4 only.
  2. 1, 2 & 3 only.
  3. 1, 3 & 4 only.
  4. 3 & 4 only.
  1. Pyrolysis/Gasification is a process of chemical decomposition of Organic matter through heat. The organic matter is heated in the absence of air till it breaks down to smaller molecules of gas. The gas is known as Producer Gas – Constituents of this gas are:
  1. Carbon Di oxide.
  2. Carbon mono oxide.
  3. Nitrogen.
  4. Hydrogen.
  5. Sulphur di oxide.
  6. Ammonia.
  1. All except 5.
  2. All except 6.
  3. All except 5 & 6.
  4. All the above options are wrong.
  1. Landfill Gas Recovery is a measure of recovering gas from waste dumps wherein the waste slowly decomposes to produce ‘Landfill gas’.  Which of the following statements are correct.
  1. This gas consists of high percentage of methane.
  2. Has a high calorific value.
  3. Cannot be used for generating power.
  1. 1 & 2 only.
  2. 1 & 3 only.
  3. 2 & 3 only.
  4. 1, 2 & 3 only.
  1. Consider the following statements:
  1. Refineries and Fertilizer plants are the major consumers of Hydrogen gas.
  2. Refineries and Fertilizer plants are the major producers of Hydrogen gas.

The correct statements is/are:

  1. 1 only.
  2. 2 only.
  3. Both.
  4. None.
  1. Hydrogen is being projected as the fuel for future. Which of the following processes are used to produce Hydrogen:
  1. Steam Methane Reformation.
  2. Gasification of Coal.
  3. Gasification of biomass.
  4. Electrolytic process – using electricity to produce hydrogen.
  5. Photolytic process – using sunlight to produce hydrogen.
  1. All except 1.
  2. All except 2.
  3. All except 1 & 2.
  4. All the above options are wrong.
  1. Which of the following are potential reasons for decline of house sparrow:
  1. Severe changes in urban ecosystem.
  2. Radiations from mobile tower.
  3. Excessive use of chemical fertilizers.
  4. Poaching.
  1. 1 & 4 only.
  2. 1, 2 & 3 only.
  3. 1 & 2 only.
  4. 1, 2, 3 & 4.
  1. The riverbank between the Tungabhadra reservoir and Kampli has been identified as ‘Protected area’ for Otters. Which of the following are true about Otters.
  1. Otters are listed as endangered in the IUCN Red list of threatened species.
  2. Otters are hunted for their fur.
  1. 1 only.
  2. 2 only.
  3. Both.
  4. None.
  1. Consider the following lakes in J&K.
  1. Hokersar.
  2. Tsomoriri.
  3. Mansar.
  4. Surinsar.

Which of these lakes are listed under the Ramsar convention.

  1. All except 2.
  2. All except 3.
  3. All except 4.
  4. None of the above options are correct.
  1. The Montreux Record is a register of wetland sites on the List of Wetlands of International Importance where changes in ecological character have occurred, are occurring, or are likely to occur as a result of technological developments, pollution or other human interference. It is maintained as part of the Ramsar List. Which of the following lakes from India are included in the Montreux record.
  1. Loktak Lake.
  2. Chilka Lake.
  3. Wullar Lake.
  1. 1 only.
  2. 1 & 2 only.
  3. 2 & 3 only.
  4. 1, 2 & 3 only.
  1. Which of the following statements are correct according to the India State of Forest Report 2011 – Published by Forest Survey of India.
  1. There has been a net decrease in the forest cover of hill districts of India in comparison to previous assessment.
  2. There has been a net decrease in the forest cover of tribal districts of India in comparison to previous assessment.
  3. There has been a net decrease in the forest cover of North Eastern states of India in comparison to previous assessment.
  4. There has been a net decrease in the Mangrove cover in comparison to previous assessment.
  5. There has been a net decrease in the forest cover of India in comparison to previous assessment
  1. All except 2.
  2. All except 3.
  3. All except 4.
  4. None of the above options are correct.
  1. The Union Ministry of Environment and Forest has suggested species recovery action plans in the State to save – Great Indian Bustard, Lesser Florican and Bengal Florican. Which of the following statements with regard to these three birds are correct.
  1. All these 3 birds are critically endangered according to IUCN Red list.
  2. Lesser Florican is mostly found in the Western part of India whereas Bengal Florican is found in the Eastern part of India.
  3. All the three birds belong to the Bustard family.
  1. 1 & 2 only.
  2. 1 & 3 only.
  3. 2 & 3 only.
  4. 1, 2 & 3 only.
  1. Consider the following four birds.
  1. Great Indian Bustard.
  2. Lesser Florican.
  3. Bengal Florican.
  4. Houbara Bustard.

Consider the following statements with regard to these four birds.

  1. Out of these four birds exactly two are listed as critically endangered according to IUCN Red list.
  2. Out of these four birds exactly one is listed as vulnerable according to IUCN Red list.
  3. Out of these four birds exactly one bird is listed as threatened according to IUCN Red list.

Which of the above statements are correct.

  1. 1 only.
  2. 3 only.
  3. 1, 2 & 3.
  4. 1 & 3 only.
  1. Forest Rights Act recognizes the rights of forest dwellers over forestland and forest resources such as minor forest produce they have traditionally been extracting and using.  Which of the following statements is/are correct with regard to this Act.
  1. Forest dwellers can transport minor forest produce by any appropriate means of transport.
  2. A committee set up by Gram Sabha issues transit passes for transporting minor forest produce.
  1. 1 only.
  2. 2 only.
  3. Both.
  4. None.
  1. Consider the following:
  1. 2012 was the 40h anniversary of Stockholm conference.
  2. 2012 was the 25th anniversary of Montreal protocol.
  3. 2012 was the 20th anniversary of Rio Earth Summit.
  4. 2012 was the 10th anniversary of World sustainable summit.

Which of the above statements are correct.

  1. 2 & 4 only.
  2. 1, 2 & 3 only.
  3. 1, 2, 3 & 4.
  4. 3 & 4 only.
  1. Which of the following Ozone depleting substances have been completely phased out (Both production and consumption) from India:
  1. CFCs.
  2. CTC.
  3. Halons.
  4. Methyl Bromides.
  5. HCFCs.
  1. All except 4 & 5.
  2. All except 5.
  3. All except 2, 3, 4 & 5.
  4. None of the above options are correct.

Question 61 to 80

  1. Indian firm Godrej claims to be the first company in the world to have started making and selling air conditioners that do not use HFCs. Which of the following statements with regard to HFCs (Hydroflorocarbon) are correct:
  1. HFCs have replaced CFCs and HCFCs as coolant for refrigerators.
  2. HFCs pose no harm to the ozone layer.
  3. HFCs are potent Green house gases.
  4. HFCs are generated during the manufacturing of HCFCs.
  1. 2 & 4 only.
  2. 1, 2 & 3 only.
  3. 1, 2, 3 & 4.
  4. 3 & 4 only.
  1. The targets for the first commitment period of the Kyoto Protocol cover emissions of the six main greenhouse gases, which of the following gas is NOT one of these:
  1. Carbontetrachloride (CTC)
  2. Hydrofluorocarbons (HFCs)
  3. Perfluorocarbons (PFCs)
  4. Sulphur hexafluoride (SF6)
  1. The Himalayan Yew Tree in the Himalayan region that has cancer curing properties is facing near extinction. The reason for this is:
  1. A widespread attack of fungus on these trees.
  2. Introduction of other invasive species.
  3. Over exploitation.
  4. Construction of new dams that has led to submersion of vast areas.
  1. Consider the following lakes:
  1. Sasthamkotta Lake.
  2. Vembanad Lake.
  3. Ashtamudi Lake.
  4. Vellayani Lake.

Which if the following statements are correct:

  1. All these lakes are located in Kerala.
  2. Exactly three lakes are located in Kerala.
  3. All these lakes are Ramsar sites.
  4. Exactly three lakes are Ramsar sites.
  1. 1 & 4 only.
  2. 2 & 3 only.
  3. 1 & 3 only.
  4. 2 & 4 only.
  1. Boron is an essential micronutrient for crops. Which of the following are the functions of Boron in crops:
  1. Facilitates pollination.
  2. Aids in translocation of sugar and carbohydrates.
  3. It plays an important role in the proper function of cell membranes.
  4. Helps in Nitrogen fixation.
  5. Aids in photosynthesis.
  1. All except 4 & 5.
  2. All except 5.
  3. All except 3, 4 & 5.
  4. None of the above options are correct.
  1. Which of the following can accelerate global warming:
  1. Rice cultivation.
  2. Cattle breeding.
  3. Melting of permafrost in the Arctic region.
  1. 1 & 3 only.
  2. 1 & 2 only.
  3. 2 & 3 only.
  4. 1, 2 & 3.
  1. Which of the following statements are correct:
  1. Indian high temperature Reactor (IHTR) will be installed in remote areas and will require refueling only once in 15 years.
  2. Compact high temperature reactor (CHTR) will generate hydrogen.
  3. Advanced heavy water reactor (AHWR) will generate electricity from thorium.
  1. 1 & 3 only.
  2. 1 & 2 only.
  3. 2 & 3
  4. 1, 2 & 3.
  1. Under the Integrated Nutrient Management (INM), Mycorrhiza is an indispensable agricultural input. Mycorrhiza is a symbiotic association of fungus with the root of the plant. The benefits associated with such association are:
  1. Improved supply of water and nutrients to the plants.
  2. Increases tolerance of plants to environmental stress.
  3. Protects plant from soil borne pathogenic diseases.
  4. Maintains biological health of soil.
  1. 2 & 4 only.
  2. 1, 2 & 3 only.
  3. 1, 2, 3 & 4.
  4. 3 & 4 only.
  1. Algaculture is a form of aquaculture involving the farming of species of algae. The potential benefits of algal biomass are:
  1. It can be used as fertilizer.
  2. It can be used for power generation.
  3. It can be used for production of biodegradable plastics.
  4. It is useful for food processing.
  5. It can help in controlling air and water pollution.
  6. It can be used in cosmetics and pharmaceutical industries.
  7. It can be used to produce biodiesel.
  1. All except 4 & 5.
  2. All except 1 & 5.
  3. All except 7.
  4. None of the above options are correct.
  1. Over 140 countries have agreed on the first international treaty that aims to reduce the emission and release of mercury into the air, water and land. Treaty is named as the Minamata convention. Which of the following is correct with regard to this treaty:
  1. The convention prohibits primary mining of mercury.
  2. The use of mercury in products like CFL, batteries, soaps, cosmetics and medical appliances must be phased out by 2020.
  3. Treaty keeps exception for the products like vaccines’ preservatives and products related to religious faith.
  1. 1 only.
  2. 1, 2 & 3.
  3. 3 only.
  4. 1 & 2 only.
  1. Assertion: Arctic’s Ozone depletion tends to be milder and short lived than the Antarctic’s.

Reason: CFCs, Frigid temperatures and sunlight are not present at the Arctic at the same time.

  1. Assertion & Reason both are correct and Reason is the correct explanation.
  2. Assertion & Reason both are correct but reason is not the correct explanation.
  3. Assertion is wrong, Reason is correct.
  4. Assertion is correct, reason is wrong.
  1. Agricultural activities produce Green house Gases, which of the following are the gases that are produced:
  1. CO2, NO2 & CH4.
  2. NO2 & CH4 only.
  3. CO2 & CH4 only.
  4. CH4 only.
  1. Which of the following crops are used for producing Bio fuels.
  1. Sugar cane.
  2. Corn.
  3. Potato
  1. 1 & 2 only.
  2. 1 & 3 only.
  3. 2 & 3 only.
  4. 1, 2 & 3.
  1. Assertion: Two major energy blocs – the U.S. and the EU – are leading the way to phase out first-generation biofuels and replace them completely with second-generation biofuels.

Reason: Second generation bio fuels do not interfere with food production.

  1. Assertion & Reason both are correct and Reason is the correct explanation.
  2. Assertion & Reason both are correct but reason is not the correct explanation.
  3. Assertion is wrong, Reason is correct.
  4. Assertion is correct, reason is wrong.
  1. A recent study taken up by a team of researchers from the Zoological Survey of India (ZSI), Chennai, brought to light the serious threat of extinction the coral reef colonies and mangrove forests in the Palk Bay are facing. The probable reasons for this decline are:
  1. Global Warming.
  2. Siltation.
  3. Overgrowth of Algae.
  1. 1 & 2 only.
  2. 1 & 3 only.
  3. 2 & 3 only.
  4. 1, 2 & 3.
  1. Which of the following Indian Biosphere Reserves have been included in the World network of Biosphere reserves under the Man Biosphere program of UNESCO:
  1. Simplipal Biosphere Reserve.
  2. Achanakmar – Amarkantak Biosphere Reserve.
  3. Pachmarhi Biosphere Reserve.
  4. Western Ghats
  1. 1, 2 & 4 only.
  2. 1 & 3 only.
  3. 1, 2, 3 & 4.
  4. 1, 2 & 3 only.
  1. Consider the following four species.
  1. Forest Owlet.
  2. Ganges Dolphin.
  3. Ganges Shark.
  4. Dugongs.

Consider the following statements with regard to these four birds.

  1. Out of these four, exactly two are listed as critically endangered according to IUCN Red list.
  2. Out of these four, exactly one is listed as vulnerable according to IUCN Red list.
  3. Out of these four, exactly one is listed as threatened according to IUCN Red list.

Which of the above statements are correct.

  1. 1 only.
  2. 3 only.
  3. 1, 2 & 3.
  4. 1 & 2 only.
  1. An allotrope of carbon, graphite is a convenient choice to act as a neutron-moderator in a nuclear reactor. What can be a potential reason for this:

1. The carbon atom has a light nucleus that can absorb a lot of energy from fast neutrons, slowing them down effectively

2. Carbon is easily available as a solid.

3. It is light and inexpensive to handle.

  1. 1 only.
  2. 3 only.
  3. 1, 2 & 3.
  4. 1 & 2 only.
  1. Horticulture is the science of cultivation of:
  1. Fruit.
  2. Vegetables.
  3. Flowers.
  1. 1 & 2 only.
  2. 3 only.
  3. 1, 2 & 3.
  4. 1 & 3 only.
  1. Which of the following statements are correct with regard to Deer & Antelopes:
  1. Deer have antlers.
  2. Antelopes have horns.
  3. Antlers are permanent.
  4. Horns grow periodically.
  1. 1 & 3 only.
  2. 1 & 2 only.
  3. 1, 2, 3 & 4.
  4. 2 & 4 only.

Question 81 to 100

  1. Which of the following statements are correct with regard to ‘Grass’:
  1. Grass has flowers.
  2. Grass has fruits.
  3. Grass has stem.
  4. Bamboo is a grass.
  5. Sugarcane is a grass.
  1. All except 5.
  2. All except 1 & 2.
  3. All except 2.
  4. None of the above options are correct.
  1. For the purpose of coastal regulation, Coastal regulation Zone 2011 notification states that the coastal zone is:
  1. 500 m on the landward side from high tide line.
  2. 500 m on the landward side from low tide line.
  3. 12 nautical miles on the seaward side from the high tide line.
  4. 12 nautical miles on the seaward side from the low tide line.
  1. 2 & 4 only.
  2. 1 & 3 only.
  3. 1 & 4 only.
  4. 2 & 3 only.
  1. Consider the following statements:
  1. A gulf is a large body of sea surrounded by land on three sides.
  2. A bay is a large area of sea partially enclosed by land.
  3. A lagoon is a shallow lake of salt water separated from sea by offshore islands.
  4. Chilka Lake is a lagoon.
  1. 1, 2 & 4 only.
  2. 1, 2, 3 & 4.
  3. 3 & 4 only.
  4. 1, 2 & 3 only.
  1. Consider the following statements:
  1. Aceclofenac is a painkiller used by veterinary doctors.
  2. Aceclofenac is derived from diclofenac.
  3. Aceclofenac is a potential threat to vultures.

Which of the above statements is/are correct.

  1. 1 only.
  2. 3 only.
  3. 1, 2 & 3.
  4. 1 & 2 only.
  1. Consider the following statements with regard to Global Hunger Index (GHI):
  1. The dimensions of hunger that are measured for GHI are undernourishment, child under weight and child mortality.
  2. Countries are ranked on 100-point scale.
  3. Higher the GHI values, the worse the ranking of the country.
  4. India has a higher rank than Bangladesh but lower rank than Pakistan.

Which of the above statements is/are correct.

  1. 1 & 4 only.
  2. 3 only.
  3. 1, 2 & 3 only.
  4. 1, 2, 3 & 4.
  1. In which of the following diseases, a mosquito can pick up the infection from one human and transmit the infection to another:
  1. Malaria.
  2. Japanese Encephalitis.
  3. Filariasis.
  1. 1 & 2 only.
  2. 2 only.
  3. 1, 2 & 3.
  4. 1 & 3 only.
  1. Which of the following statements with regard to type 1 and type 2 diabetes are correct.
  1. The onset of type 1 is sudden whereas onset of type 2 is gradual.
  2. Type 2 is more common than type 1.
  3. In type 2, the body stops producing insulin.
  4. The onset of type 2 is primarily due to lifestyle reasons whereas the onset of type 1 is unrelated to lifestyle.
  5. Type 1 mostly affects children whereas type 2 mostly affects adults.
  1. All except 5.
  2. All except 1.
  3. All except 2 & 4.
  4. All except 3
  1. Chemical castration is a medical procedure that reduces sexual urges and arousals in a human being. The side effects of Chemical Castration include:
  1. Loss in Bone density.
  2. Loss of body hair.
  3. Greater deposition of body fat.
  4. Female like breasts in male.
  1. 1 & 3 only.
  2. 2 & 3 only.
  3. 1, 2 & 4 only.
  4. 1, 2, 3 & 4.
  1. Rabies has been made as the priority disease for control under the 12th 5-year plan. Rabies is caused by the bite of:
  1. Dogs.
  2. Monkeys.
  3. Cats.
  1. 1 & 3 only.
  2. 2 & 3 only.
  3. 1, 2 & 3.
  4. 1 & 2 only.
  1. Which of the following statements with regard to BCG is/are correct:
  1. BCG is a vaccine for TB.
  2. BCG cannot be given to HIV positive people.
  3. BCG is a live attenuated vaccine.
  1. 1 & 3 only.
  2. 2 & 3 only.
  3. 1, 2 & 3.
  4. 1 & 2 only.
  1. Chronic Myeloid Leukemia a form of cancer was in news recently. The context was:
    1. Gliveec Patent case
    2. Angelina Jolie double mastectomy – Gene Patent case.
    3. A new cure has been found for this form of cancer.
    4.   Fukushima Nuclear disaster.
  2. Correct Statements?
    1. Northwestern Himalayas are famous for Karewa formations.
    2. Karewa formations are helpful in the cultivation of Zafran.
    3. Both A and B are correct
    4. Both A and B are incorrect
  3. What do you understand by Intensive Subsistence Agriculture?
    1. In this type of agriculture the yield per unit area is high but per labour productivity is low.
    2. In this type of agriculture the yield per unit area is low but per labour productivity is high.
    3. In this type of agriculture the yield per unit area & per labour productivity is low.
    4. In this type of agriculture the yield per unit area & per labour productivity is high.
  4. The net primary productivity of an ecosystem is
    1. The gross primary productivity minus plant respiration
    2. The primary productivity at herbivore level
    3. The primary at consumer level
    4. The productivity at top consumer level minus at all levels
  5. consider following statements
    1. An ecotype is Genetically different forms of the same organisms
    2. Pyramid of trophic levels is always upright in case of energy
    3. Both A and B correct
    4. Neither A or B correct
  6. Correct Statement?
    1. Black foot disease is caused by Excess of fluoride in water
    2. Snow blindness is caused due to Ultraviolet radiations
    3. Both correct
    4. Both Incorrect
  7. Correct Statement
    1. The term “ecology” was first used by term by German zoologist Ernst Haeckel
    2. Richael Carsson’s famous book “Silent Spring” dealt with the Impacts of agro-chemicals on ecological functions
    3. Both Correct
    4. None Correct
  8. An oligotrophic lake has
    1. High levels of nutrients in water
    2. High aquatic productivity
    3. Algal blooms
    4. Low nutrients and low productivity
  9. Incorrect Statements about Eutrophication
    1. Eutrophication is the enrichment of surface waters with plant nutrients.
    2. Eutrophication can leads to algal blooms, deoxygenation of water and ultimately fish kills.
    3. Eutrophicated water is oxygen rich and safe for direct human consumption without requiring any treatment.
    4. None of above
  10. Consider the following two fresh water ecosystem
    1. Streams, Springs, Rivers are examples of lotic type fresh water ecosystem
    2. Pond, lake, ditch are examples of lentic type fresh water ecosystem
    3. both A and B are correct.
    4. Both A and B incorrect.

Answers

Courtesy: These Question-Answers were setup by Mr. Palas Nuwal

  1. D
  2. D – All are correct.
  3. C – Both are correct.
  4. D – All are correct – Refer Wiki.
  5. C
  6. B – It is not concentration but column thickness.
  7. B – Body has mechanism to prevent sunlight from producing too much vitamin D.
  8. A – Ice reflects sunrays. If it is replaced by dense forest, it will absorb more heat. As dark regions absorb more heat. Eventually aiding in Global Warming.
  9. A – It is the lightest material. Graphite Aerogel was the lightest material previously.
  10. A – It is not endemic to India – It is an invasive species. Source The Hindu – http://www.thehindu.com/news/national/other-states/a-flowering-outbreak/article4588572.ece
  11. A
  12. C – It is basic in nature.
  13. A
  14. C – SOx and NOx are not produced.
  15. B
  16. D
  17. D
  18. A
  19. A
  20. A
  21. D – All are correct.
  22. A
  23. C
  24. C
  25. C
  26. D
  27. C
  28. D
  29. D
  30. B
  31. D
  32. B – It has half the energy density of Natural gas.
  33. D
  34. C
  35. B
  36. B – Force is attractive.
  37. A
  38. D
  39. C – There is no concrete research to prove option 1 – If you find any proofs do share.
  40. D – All are correct.
  41. D
  42. D
  43. D
  44. C
  45. B
  46. D
  47. C
  48. A
  49. C
  50. D
  51. D
  52. B
  53. D
  54. A
  55. C
  56. C
  57. C – Refer IUCN Red list.
  58. C
  59. C
  60. A.
  61. C
  62. A
  63. C
  64. A – Vellayani Lake is not a Ramsar site.
  65. B
  66. D – Rice (Methane), Cattle (Methane), Permafrost (Methane and Carbon dioxide)
  67. C
  68. B
  69. D – All are correct.
  70. B
  71. A – It is necessary to have all three at the same time for ozone layer to deplete.
  72. A
  73. D
  74. A
  75. D
  76. D – Achanakmar – Amarkantak was included in 2012. Western Ghats is world heritage site.
  77. D
  78. D
  79. C
  80. B – Antlers grow in periodic fashion and horns are permanent.
  81. D. All are correct. Bamboo is the tallest grass. Sugarcane is sweet grass. Grass has flowers, fruits and stems.
  82. C
  83. C
  84. C
  85. D
  86. D
  87. D
  88. D
  89. C
  90. C
  91. A-glivec case
  92. C- NCERT class 12
  93. A- NCERT class 12
  94. A- gross minus respiration
  95. C both right
  96. B- blackfood=arsenic
  97. C- both right
  98. D- low nutrient
  99. C- read impacts of eutrophication in http://www.fao.org/docrep/w2598e/w2598e06.htm
  100. C- both definitions are correct. memorise: lentic =static (water).

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अब तक 254 कमेंट्स लिखी गयी

  1. Nandan says:

    dear mrunal
    i have a doubt. if a particular species is found in two different geographic locations, can they be called endemic to that particular location.
    please clarify

  2. PIRAI says:

    for 45th answer shd be 1 and 3 only

    • PIRAI says:

      sorry its 35th question anwer should be 1 and 3

      • keerti says:

        But 4th statement is also correct in that…

  3. Palas Nuwal says:

    Some extra information regarding Q 5:

    >Increases in greenhouse gases warm the troposphere and cool the stratosphere.

    >Volcanic aerosols warm the stratosphere and cool the troposphere.

    >Increase in solar forcing warms most of the atmosphere.

    >Increases in tropospheric ozone warm the troposphere.

    >Decreases in stratospheric ozone cool the stratosphere.

    >Sulfate aerosols cool the troposphere and slightly warm the stratosphere.

  4. Palas Nuwal says:

    Regarding Q 60 – You can refer:

    http://www.pib.nic.in/newsite/erelease.aspx?relid=87712

  5. sandip says:

    @ PALAS,

    In tmh , its written syngas is a mix of carbon di oxide , h2 and methane…….
    plz clarify

  6. R Gowtham says:

    Q. No.:58 Answer is given as C.
    But as per the revised guidelines of Forest Rights Act (issued on july 2012), MFP’s need not require transit permit from Gram shabas or forest dept.,

    Ref: Spectrum Handbook 2013(P-99).Pls check.

    • Palas Nuwal says:

      Yes thats right – A separate committee set up by Gram Sabha will look into it. That is what the second statement says.

  7. Yashpal says:

    In Q. 57, sentences 1 & 2 are correct but not 3 as “threatened” includes CR, EN and VU. So, all four are threatened.

  8. keerti says:

    @ PALAS
    Sir in Q 46 isn’t the 1st statement correct that GM crops are regulated by Agri ministry..? Kindly correct me if i’m wrong..

    • Compchap says:

      GEAC comes under MoEF. Hence first is wrong.

    • Palas Nuwal says:

      MoEF.
      Bill by department of S&T to form BRAI.

      You can refer GEAC website.

      • keerti says:

        @ PALAS
        Yes..i got it..Thank u:)..Sir i had a doubt in polity..In Lakshmikant Pg 22.10 1st column 6th para, its given that speaker and deputy speaker do not make any oath while assuming office.. But Meera Kumar took an oath..and if the do then who administers oath to the speaker and deputy speaker…?

        • keerti says:

          *the do*=they do

        • Palas Nuwal says:

          I think she took Oath that is necessary for a Member of Parliament. There is no separate Oath for Speaker & Deputy Speaker.

          *Not sure*.

          • keerti says:

            Yes,moreover its given in lakshmikant too.. And thankyou for your efforts in putting up the polity and EnB questions..They are really very helpful:)

  9. Compchap says:

    Kindly Confirm Q.53 : Answer shud be B. Rest 3 are in J&K.

    • Palas Nuwal says:

      All are in J&K.

  10. karan says:

    thanks seniors…very helpful..

  11. Navin says:

    best of luck guys.. do well in exam :)

  12. Vikas says:

    53
    Answer C not D.

    Except mansar all the other three are part of ramsar convention

    • Vikas says:

      53
      Option B

    • Vikas says:

      Option B

  13. मनु झा says:

    Thanks a lot Palas. This is a morale Booster !
    Lots of hardwork behind.

    • Palas Nuwal says:

      Thank you. :)

  14. kaviarasu says:

    mrunal sir good evening q.no. 35 option is wrong sir because such lagrange point exist in moon and earth also

  15. TheDudeInAHood says:

    ayurveda doesn’t belong to vedic period ,….

    #q-26

    • Palas Nuwal says:

      Ayurveda is a discipline of the upaveda or “auxiliary knowledge”. It is treated as a supplement or appendix of the Vedas themselves, usually either the Rigveda or the Atharvaveda. The samhita of the Atharvaveda itself contains 114 hymns or incantations for the magical cure of diseases. There are various legendary accounts of the “origin of ayurveda”, e.g. that the science was received by Dhanvantari (or Divodasa) from Brahma. Tradition also holds that a lost text written by the sage Agnivesh, a student of the sage Bharadwaja, influenced the writings of ayurveda.

      If you don’t believe it google it! :)

    • Palas Nuwal says:

      +

      The earliest literature of Ayurveda appeared during the Vedic period in IndiaThe Sushruta Samhita and the Charaka Samhita were influential works on traditional medicine during this era.

  16. Yash says:

    Best of luck guys…..

  17. pooja says:

    thanks palas sir
    last moment what should i study now? any new things create panic:(

  18. bulla says:

    50 is all are correct…..right?

    • Palas Nuwal says:

      Yes.

  19. Dinesh says:

    Hi Palas,

    Thank you very much for your effort , shows your hard work and i am sure your work will open many minds. Thanks

    All the best for your exam !!.

    • Palas Nuwal says:

      Thank you. Give your best tomorrow. :)

  20. Kartik says:

    Kya mrunal sir aaj koi article publish nahin karenge like best of luck , some sound advice etc etc …. Coz today i need him d most coz m totally feeling blank right now !!!

    Anyways thanks for contribution mrunal sir !
    Regards

    • csl80 says:

      are bhai kartik Mrunal ke best wishes to iss websites ke sabhi readers ke liye hamesha saath hain All the Best CSE Aspirants :)

  21. Vinod says:

    Question is easy
    Options are tricky
    No current affairs
    More concept oriented & statement
    Did 80 question

  22. purushottam sahay says:

    thanks a lot for providing mock mcq on sci-tech

  23. purushottam sahay says:

    best of luck for all cse aspirant appearing today

  24. swetabh says:

    Paper was easy.. Cut off will go high…

  25. nick says:

    Dear All, I want UPSC mains syllabus of new pattern in PDF form.. kindly provide me.. thanx.

  26. mr einstein says:

    sir, can u plz upload the prelims answer key..

  27. xyz says:

    sir please can u upload the prelim question paper with answer key

  28. Vivek Khare says:

    I must say, after attempting these questions,gave me needed push for Pre exam for which I was reluctant to study S&T part. I tried answering all of these & would have got 70 right. Rest of the question made me search on net which actually helped a lot in answering questions. Mentioning Mycorrhiza in one of question shows how credible these questions were. Thanks guys.

  29. apoorv says:

    sir,
    for question 81….explanation given is all are correct but option d is that all are incorrect…. are we not contradicting…

  30. vignesh kr says:

    was very useful.. got an idea for sci-tech preparation.. :)

  31. Suresh Kumar says:

    Que 69 ka answer all correct please explain it

  32. anil dutt sharma says:

    a good series of questions from science and tech… thanks mr. mrunal… hope this will be a help for the UPSC aspirants.

  33. asthana says:

    plz check the answer of q-6

    cfc are found naturally…..

    refer to http://cfc.geologist-1011.net/

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