Class IX

Loss of hydrogen atoms by an element is called
  1. hydrogenation
  2. oxidation
  3. reduction
  4. sublimation
Electrolyte used for tin plating is
  1. sulphide ore
  2. stannous sulphate
  3. hydrogen sulphate
  4. sodium chloride
Corrosion can be prevented by
  1. Alloying
  2. Tinning
  3. Galvanizing
  4. all of above
Process in which substance gains electrons is called
  1. oxidation
  2. hydrogenation
  3. sublimation
  4. reduction
An electrolytic cell uses electrical energy to drive
  1. chemical reaction
  2. physical reaction
  3. no reaction
  4. none of above
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