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Chemistry Questions Answers Online Quiz Test

  • 1. Who proposed first atomic theory ?

    1. E.Rutherford
    2. De Broglie
    3. John Dalton
    4. D.I.Mendeleef
  • 2. pH of blood is ?

    1. 10.4
    2. 9
    3. 7.4
    4. 4
  • 3. pH of water is

    1. 5
    2. 6
    3. 7
    4. 8
  • 4. Which one of the following is the softest?

    1. sodium
    2. iron
    3. aluminium
    4. lithium
  • 5. Which have the maximum density ?

    1. Water
    2. Benzene
    3. Ice
    4. Chloroform
  • 6. Which one of the following gas is readily soluble in water at room temperature ?

    1. chlorine
    2. nitrogen
    3. ammonia
    4. carbon dioxide
  • 7. Which is also called Stranger Gas ?

    1. Xenon
    2. Neon
    3. Argon
    4. Nitrous oxide
  • 8. The chemical used as a fixer in photography is ?

    1. sodium thiosulphate
    2. sodium sulphate
    3. borax
    4. ammonium sulphate
  • 9. Water drops are spherical because of ?

    1. viscosity
    2. density
    3. polarity
    4. surface tension
  • 10. Aspirin is

    1. acetyl salicylic acid
    2. sodium salicylate
    3. methyl salicylate
    4. ethyl salicylate
  • 11. The oxide of Nitrogen used in medicine as anaesthetic is ?

    1. Nitrogen pentoxide
    2. Nitrous oxide
    3. Nitric oxide
    4. Nitrogen dioxide
  • 12. Which one of the following metals does not react with water to produce Hydrogen?

    1. Cadmium
    2. Lithium
    3. Potassium
    4. Sodium
  • 13. The most electronegative element among the following is

    1. sodium
    2. bromine
    3. fluorine
    4. oxygen
  • 14. Atomic number is equal to

    1. Number of electrons
    2. Number of nutron
    3. Number of protons
    4. Total number of protons and neutrons
  • 15. Which of the primary component of natural gas?

    1. Ethane
    2. Propane
    3. Methane
    4. Butane
  • 16. The metal used to recover copper from a solution of copper sulphate is ?

    1. Na
    2. Ag
    3. Hg
    4. Fe
  • 17. Which gas is used in fire extinguishers ?

    1. Carbon dioxide
    2. Nitrogen oxide
    3. Carbon monoxide
    4. Sulpher dioxide
  • 18. The metallurgical process in which a metal is obtained in a fused state is called ?

    1. roasting
    2. calcinations
    3. smelting
    4. froth floatation
  • 19. Which of the following is produced during the formation of photochemical smog ?

    1. Nitrogen Oxides
    2. Hydrocarbons
    3. Methane
    4. Ozone
  • 20. Which of the following gas is used in cigarette lighters ?

    1. Butane
    2. Propane
    3. Methane
    4. Ethane
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