Chemistry Questions Answers Online Quiz Test

• 1. The substance that contains the maximum amount of nitrogen is ?

  1. Ammonium Sulphate
  2. Urea
  3. Ammonium Nitrate
  4. Ammonium Chloride

• 2. Which of the following gases is the most toxic?

  1. Carbon dioxide
  2. Sulphur dioxide
  3. Carbon monoxide
  4. Acetic acid

• 3. Which of the following elements behave chemically both as a metal and a non metal?

  1. Boron
  2. Carbon
  3. Argon
  4. Mercury

• 4. What is the chemical name of table salt ?

  1. Sodium nitrate
  2. Ammonium chloride
  3. Sodium chloride
  4. Calcium chloride

• 5. Why is phosphorus kept under water ?

  1. to make it wet
  2. to make it durable
  3. water forms a protective coating on it
  4. to save it from catching fire when exposed to dry air

• 6. What is extracted from Bauxite ?

  1. Mica
  2. Aluminium
  3. Copper
  4. Tin

• 7. Brass is an alloy of ?

  1. Copper and Tin
  2. Copper and Zinc
  3. Copper and Aluminium
  4. Iron and Copper

• 8. Contact lenses are made from ?

  1. Polyvinyl chloride
  2. Teflon
  3. Polystyrene
  4. Lucite

• 9. Which gas is filled in refrigerators ?

  1. Chlorofluorocarbon
  2. Acetylene
  3. Methane
  4. Butane

• 10. The single acid which dissolves gold is ?

  1. Aqua regia
  2. Hydrochloric acid
  3. Nitric acid
  4. Selenic acid

• 11. How many different oxides are formed by nitrogen ?

  1. two
  2. three
  3. four
  4. five

• 12. The major component used in preparation of different types of glasses is :

  1. Sodium borate
  2. Sodium silicate
  3. Silica
  4. Calcium silicate

• 13. Acid rain is due to air pollution by ?

  1. Carbon dioxide
  2. Carbon monoxide
  3. Methane
  4. Nitrous oxide and Sulphur dioxide

• 14. Acids taste

  1. Sour
  2. Sweet
  3. May be both
  4. None of both

• 15. What is metallurgy ?

  1. process of extracting metal in pure form from its ore.
  2. process of creating alloys of metals.
  3. process of making metals live long.
  4. None of above.

• 16. Oxides of metals are alkaline.

  1. TRUE
  2. FALSE

• 17. What is used to avoid melting of ice ?

  1. Gelatine
  2. Butane
  3. Methane
  4. Any acid

• 18. Which have maximum number of isotopes ?

  1. Bromine
  2. Aluminium
  3. Polonium
  4. Carbon

• 19. The aqueous solution of which acids is called Vinegar ?

  1. Acetic acid
  2. Hydrochloric acid
  3. Citric acid
  4. Oxalic acid