General Knowledge Questions Answer GK Quiz

GK General Knowledge - Chemistry Question Answer Quiz

Q. Atomic mass of an element is equal to the sum of number of -
1) electrons and protons only
2) protons and neutrons only
3) electrons and neutrons only
4) electrons, protons and neutrons

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Q. Which one of the following element's isotope is used in the treatment of cancer?
1) Uranium
2) Cobalt
3) Sodium
4) Iodine

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Q. Which one of the following is the largest composition in biogas?
1) Carbon dioxide
2) Methane
3) Hydrogen
4) Hydrogen sulphide

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Q. At nearly 700C, sodium bicarbonate shows the property of gradually decomposing, which makes it usable in bakery products. The product of decomposition responsible for this use of sodium bicarbonate is -
1) Carbon dioxide
2) Hydrogen
3) Water vapour
4) Oxygen

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Q. Number of molecules of water of crystallization in copper sulphate, sodium carbonate and Gypsum are -
1) 5, 10 and 2 respectively
2) 10, 2 and 5 respectively
3) 5, 2 and 10 respectively
4) 2, 5 and 10 respectively

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Q. Which one of the following is the correct sequence of change in colours when a turmeric stain on white clothes is scrubbed by soap and then washed with water?
1) Yellow - pink - blue
2) Yellow - reddish brown - yellow
3) Yellow - reddish brown - blue
4) Yellow - blue - pink

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Q. Which one of the following statements regarding Bleaching powder and D.D.T. is correct?
1) Both are inorganic compounds
2) Both are organic compounds
3) Both contain chlorine
4) Both contain calcium

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Q. Which one of the following is the best example of desiccant?
1) Silica gel
2) Polystyrene
3) Sodium chloride
4) Sodium carbonate

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Q. Which one of the following statements is not correct?
1) Biomass is a renewable source of energy
2) Gobar gas is produced when cowdung, crop residues, vegetable waste and sewage are allowed to decompose in the absence of oxygen
3) Biogas generation reduces soil and water pollution
4) Heating capacity of biogas is very low

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Q. Chalk and marble are different forms of -
1) Calcium hydrogen carbonate
2) Calcium carbonate
3) Calcium acetate
4) Sodium carbonate

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