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