[Science] Principle behind famous consumer products: Odomos, Hand Sanitizer etc

In Prelims-2010, UPSC had asked about principle of Sugerfree (Artificial sweetener).
So based on that here goes some more; which of the following is true?

What is the Principle behind Mosquito repellent cream? (Odomos)

1. It contains a special volatile chemical that creates burning sensation in mosquito’s respiratory system and eyes.
2. It contains a chemical that masks the distinctive body odour that human skin emits, making you virtually invisible to mosquitoes.

(Correct answer #2)

How does diabetes glucometer work ? (Waseem Akram’s Accucheck meter ad)

You put blood drop on the strip. Strip contains chemical compounds: chemical reaction, color change. The glucometer measures the color-intensity and gives you the blood-glucose measurement.

Home Test kit for Pregnency (Accutest Cadila)

It detects the amount of HCG ( Human Chorionic Gonadotropin) in woman’s urine .
The levels of this hormone rise after the embryo has been implanted in the womb and the strip changes color after chemical reaction from urine drops.

Anti-perspirants (that John Abraham’s ad)

Basically the aluminum chemical penetrates the armpit cells and makes them swell hence the sweat cannot come out.

Emergency contraceptive pills. (i-pill, Piramal Pharma)

They contain same hormones as in normal contraceptive pills but in heavy concentration and hence prevents fertilization.

Instant Hand sanitizer (Lifebouy, Dettol etc)

They Contain alcohol (not soap). Alcohol destroy the baterial cellmembrane and then evaporates. So you don’t need water to wash off your hands.

Mortein Rat kill cakes. (why Chuhe mare baahar jaakar?)

Not very sure but apart from poison, it contains a chemical that makes Rats thirsty hence they run out of house in search of water.

I’ve given direct answers above, but UPSC is notorious for
adding ‘almost genuine and valid sounding’ false options in the answers,
so as I said in the Aukaat, Accuracy and Aim: don’t push your luck, if you don’t know the exact answer: just leave it.

Some more products (you dig):

Hair Colors with and without Ammonia (Laurel Paris etc.)
Goodknight mosquito coils, liquid vaporizers and silvermats.

Let’s brainstorm, please add products and principles from your side!

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Other products and principles:
1.Acupressure Pain Relief link- http://www.acupressure.com/articles/how_acupressure_works.htm

2.Fermentation
http://pecanbread.com/healingcrow/ferfun/ferfun.html

3.How Idli Dosa batter fermentation works?
http://www.indiacurry.com/south/batterexplained.htm

4.How do antibiotics work?
http://health.howstuffworks.com/medicine/medication/question88.htm

Thanks for updating use full info. UPSC asks questions that a general person should know. These concepts would be useful. If you want some more of such concepts, I will post them.
Thanks.

Could you please post something on paper-2 i.e. aptitude. Though it is a new concept introduced, we wanted to know your opinion and some demo questions or analysis from an experience player like you.

rachna

Hair color:It's the result of a series of chemical reactions between the molecules in hair, pigments, as well as peroxide and ammonia, if present.The outer layer of the hair shaft, its cuticle, must be opened before permanent color can be deposited into the hair. Once the cuticle is open, the dye reacts with the inner portion of the hair, the cortex, to deposit or remove the color. Most permanent hair colors use a two-step process (usually occurring simultaneously) which first removes the original color of the hair and then deposits a new color. It's essentially the same process as lightening, except a colorant is then bonded within the hair shaft. Ammonia is the alkaline chemical that opens the cuticle and allows the hair color to penetrate the cortex of the hair. It also acts as a catalyst when the permanent hair color comes together with the peroxide. Peroxide is used as the developer or oxidizing agent. The developer removes pre-existing color. Peroxide breaks chemical bonds in hair, releasing sulfur, which accounts for the characteristic odor of haircolor. As the melanin is decolorized, a new permanent color is bonded to the hair cortex. Various types of alcohols and conditioners may also be present in hair color. The conditioners close the cuticle after coloring to seal in and protect the new color.

love

thankyou mrunal sir

vijay babu thotakura

Hi,ple’s up date curre

nt affairs 2012-13 bnd,economy.

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[...] Odomos Principle [...]

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[...] I forgot to write about water purifiers in the Odomos article [...]

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[Science] Principle behind famous consumer products: Odomos, Hand Sanitizer etc

What is the Principle behind Mosquito repellent cream? (Odomos)

How does diabetes glucometer work ? (Waseem Akram’s Accucheck meter ad)

Home Test kit for Pregnency (Accutest Cadila)

Anti-perspirants (that John Abraham’s ad)

Emergency contraceptive pills. (i-pill, Piramal Pharma)

Instant Hand sanitizer (Lifebouy, Dettol etc)

Mortein Rat kill cakes. (why Chuhe mare baahar jaakar?)

7 comments to [Science] Principle behind famous consumer products: Odomos, Hand Sanitizer etc

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Search b4 asking!

UPSC IAS IPS Strategy

SSC CGL

SBI PO

RBI

Others

UPSC tips

Analysis

Edu Tech

[Science] Principle behind famous consumer products: Odomos, Hand Sanitizer etc

What is the Principle behind Mosquito repellent cream? (Odomos)

How does diabetes glucometer work ? (Waseem Akram’s Accucheck meter ad)

Home Test kit for Pregnency (Accutest Cadila)

Anti-perspirants (that John Abraham’s ad)

Emergency contraceptive pills. (i-pill, Piramal Pharma)

Instant Hand sanitizer (Lifebouy, Dettol etc)

Mortein Rat kill cakes. (why Chuhe mare baahar jaakar?)

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7 comments to [Science] Principle behind famous consumer products: Odomos, Hand Sanitizer etc

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