Class XI

Methane (CH4) is an excellent fuel because
  1. it is basically an endothermic reaction
  2. it gives off a lot of heat
  3. it produces carbon monoxide
  4. it contains a lot of carbon
Saccharin is
  1. acidic
  2. alkaline
  3. neutral
  4. salt solution
Oil is an example of
  1. strong electrolyte
  2. non-electrolyte
  3. weak electrolyte
  4. week insulator
Examples of sublimate does not include
  1. ammonium salts
  2. nitrates
  3. iodine
  4. naphthalene
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