Class VIII

Coaltar contains about
  1. 300 substance
  2. 400 substance
  3. 200 substance
  4. 100 substance
Purest form of carbon is
  1. Coal
  2. charcoal
  3. Coke
  4. All of these
Which of the following is manmade resource?
  1. Air
  2. Water
  3. Soil
  4. Parks
When coal burns in air then
  1. Carbon dioxide is formed
  2. Sulphur dioxide is formed
  3. Carbon monoxide is formed
  4. hydrogen gas is formed
Which of the following is obtained from coal tar ?
  1. Petrol
  2. Coke
  3. Air
  4. Naphthalene balls
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