Class XI

On passing electricity through electrolyte solution,
  1. Electrolyte splits up
  2. Electrolyte decomposes
  3. Ions migrate towards oppositely charged electrodes
  4. All of these
Methane (CH4) is better fuel than Coal gas because
  1. It is endothermic
  2. It is exothermic
  3. It gives off more heat than coal gas
  4. It requires very little oxygen to burn
100 cm3, 250 cm3 and 1 dm3 can be measured using
  1. Measuring cylinder
  2. Beaker
  3. Volumetric flask
  4. Burette
LPG is obtained by
  1. Cooling methane
  2. Cooling natural gas
  3. Ccooling carbon dioxide
  4. Cooling nitrous oxide
Liquids may become vapors
  1. Upon boiling only
  2. Without boiling
  3. At a temperature below boiling point of a liquid
  4. At a temperature above boiling point of a liquid
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