Class XI

Hydrogen acts as a reducing agent,
  1. By taking oxygen
  2. By giving electrons
  3. By taking hydrogen
  4. Both A and B
A strong electrolyte solution makes a bulb
  1. Shine brightly
  2. Shine dimly
  3. Does not shine at all
  4. Burst or fuse
Most reactive metal in given series is
  1. Magnesium
  2. Zinc
  3. Iron
  4. Tin
Acids reacts with metal carbonates to form
  1. Salt
  2. Water
  3. Carbon dioxide
  4. All of these
 In deuterium, number of neutrons are
  1. 1
  2. 2
  3. 3
  4. 0
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