Chemistry Questions Answers

• 8. Oil of vitriol is
  

  1. nitric acid
  2. sulphuric acid
  3. hydrochloric acid
  4. phosphoric acid

  Answer And Explanation

  Answer: Option B

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• 9. Which is used in preparation of dynamite ?

  1. glycerol
  2. ethyl alcohol
  3. methyl alcohol
  4. glycol

  Answer And Explanation

  Answer: Option A

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• 10. What is Calcium sulphate ?

  1. epsom salt
  2. blue vitriol
  3. gypsum salt
  4. potash alum

  Answer And Explanation

  Answer: Option C

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• 11. Bleaching action of chlorine is by

  1. decomposition
  2. hydrolysis
  3. reduction
  4. oxidation

  Answer And Explanation

  Answer: Option A

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• 12. Which metal is heaviest ?

  1. osmium
  2. mercury
  3. iron
  4. nickle

  Answer And Explanation

  Answer: Option A

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• 13. What is a mixture of potassium nitrate powdered charcoal and sulphur called?

  1. paint
  2. aluminium
  3. brass
  4. gun powder

  Answer And Explanation

  Answer: Option D

  Explanation:

  gun powder is the mixture of potassium nitrate powdered charcoal and sulphur.

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• 14. Nail polish remover contains ?

  1. benzene
  2. acetic acid
  3. acetone
  4. petroleum ether

  Answer And Explanation

  Answer: Option C

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