General Knowledge Question Answer: Chemistry GK Questions and Answers

General Knowledge Chemistry Questions, Chemistry Quiz for Competitive Exams, Important Chemistry MCQs for GK

Q. An emulsion consists of -
1) one liquid and one solied
2) one liquid and one gas
3) two liquids
4) two solids

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Q. Which of the following radioactive substances enters/ enter the human body through food physiological disorders?
1) Strontium-90
2) lodine-131
3) Cesium-137
4) All of the above

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Q. The foul smell of urine of a healthy man having healthy food, when spilled on floor, is mainly due to the bacterial decomposition of -
1) Urea into sulphur dioxide
2) sugar into carbon dioxide
3) lipids into methane
4) urea into ammonia

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Q. Desalination of seawater is done by using reverse osmosis. The pressure applied to the solution is -
1) larger than osmotic pressure
2) smaller than osmotic pres-sure
3) equal to osmotic pressure
4) equal to atmospheric pressure

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Q. Which one of the following polymers does not contain glucose units?
1) Glycogen
2) Starch
3) Cellulose
4) Rubber

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Q. Tincture o iodine is an antiseptic for fresh wounds. It is a dilute solution of elemental iodine, which does not contain -
1) water
2) acetone
3) alcohol
4) potassium iodide

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Q. Among the following fuels of energy, which is the most environment friendly?
1) Biogas
2) CNG
3) Hydrogen
4) Ethanol

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Q. Which of the following pollutant gases is not produced both naturally and as a result of industrial activity ?
1) Nitrous oxide
2) Methane
3) Carbon dioxide
4) Chlorofluoro carbons

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Q. Bio-fuels are fuels extracted from plants and crops and these have various advantages. These include -
1. increasing agricultural diversity.
2. reduced use of fertilizers.
3. renewable source of energy.
Select the correct answer using the codes given below :

1) 1 and 3 only
2) 3 only
3) 2 and 3 only
4) 1,2 and 3

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Q. Brass gets discoloured in air because of the presence of which of the following gases in air?
1) Oxygen
2) Hydrogen sulphide
3) Carbon dioxide
4) Nitrogen

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