Class VIII

What is the full from of PCRA ? 
  1. Petroleum Conservation Research Association 
  2. Petroleum Consumption Research Association 
  3. Petroleum Conservation Resource Association 
  4. Petrochemical Consumption Research Association 
Coal tar is used in manufacture of
  1. Synthetic dyes
  2. Drugs
  3. Explosives
  4. All of these
Coal mainly contains
  1. Hydrogen
  2. Oxygen
  3. Carbon
  4. Sodium
Petroleum is also known as?
  1. Liquid Treasure
  2. Liquid Platinum
  3. Black Gold
  4. Black Magic
"Read the following statements : i) Different substances have different ignition temperatures. ii) Matchstick tail has a low ignition point"
  1. both are correct
  2. statement ii) is correct but i) is wrong
  3. statement i) is correct but ii) is wrong
  4. both are wrong
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