Class VIII

CNG and LPG are the examples of
  1. Solid fuels
  2. Liquid fuels
  3. Gaseous fuels
  4. They are not fuels
The substances which have very low ignition temperature will
  1. Catch fire easily
  2. Will not catch fire
  3. Catch fire after some time
  4. None of these
Burning of charcoal in a closed room will produce
  1. Carbon dioxide
  2. Nitrogen dioxide
  3. Carbon monoxide
  4. all of above
Ignition temperature is
  1. Lowest temperature at catch fire
  2. Higher temperature at catch fire
  3. Any temperature
  4. None of these
Which substance give heat and light after combustion
  1. Flame
  2. Fuel
  3. combustion
  4. None of these
Time Elapsed

Question Answered
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