Chemistry - Questions and Answers, General Study (GK)

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Chemistry - Questions and AnswersPage 41

401.

One of the occupational health hazards commonly faced by the workers of ceramic, pottery of glass industries is

(a)Silicosis

(b)Stone formation of gall bladder

(c)Melanoma

(d)Stone formation in kidney

Comment

Answer is: ANA

402.

Contact lenses are made from

(a)Poly vinyl chloride

(b)Poly styrene

(c)Lucite

(d)Teflon

Comment

Answer is: CNA

403.

Fluorescein is an example of

(a)Azo dye

(b)Phthaleindye

(c)Triphenyl methane dye

(d)Nitro dye

Comment

Answer is: BNA

404.

Many communities put salt on their roads after a snow fall, why?

(a)To enhance the freezing and hardening of snow

(b)To control the slipping of vehicles

(c)To keep the melted snow from refreezing

(d)None of the above

Comment

Answer is: CNA

405.

The rusting of iron nail

(a)Decreases its weight

(b)Increases its weight

(c)Does not affect weight but iron is oxidised

(d)Does not affect weight but iron is reduced

Comment

Answer is: BNA

406.

Which one of the following is not responsible for the global warming?

(a)Carbon dioxide

(b)Methane

(c)CFCs

(d)Slacked lime

Comment

Answer is: DNA

407.

Heavy water is not used for drinking because

(a)It is costly

(b)Its chemical properties are different from ordinary water

(c)Its physiological action is different from ordinary water

(d)Its physical properties are different

Comment

Answer is: CNA

408.

Graphite can be used as lubricant because it has

(a)Layered structure

(b)A rigid structure

(c)Low viscosity

(d)Low melting point

Comment

Answer is: ANA

409.

What is the purpose of adding plasticizers in paint manufacturing process?

(a)They act as a film-forming constituent

(b)They reduce viscosity

(c)The prevent the polymerization and condensation

(d)They provide elasticity to the film and minimize its cracking

Comment

Answer is: DNA

410.

Alum is used as

(a)An analgesic

(b)A fertilizer

(c)A purifier for water

(d)A disinfectant

Comment

Answer is: CNA

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Chemistry - Questions and AnswersPage 41

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