Class XI

If an acid reacts with an oxide, product will include H2O and
  1. A salt(s)
  2. An acid (l)
  3. A base
  4. A gas
Metal core in power cable is normally made up of
  1. Steel
  2. Sulphur
  3. Phosphorus
  4. Mercury
In a Redox reaction,
  1. Oxidation occurs
  2. Reduction occurs
  3. Neutralization occurs
  4. Both A and B
While passing hydrogen over heated CuO(s), black color is oxidized to
  1. Golden color
  2. Pink color
  3. Blue color
  4. Colorless
Advantages dry cells offer are that they are
  1. Cheap
  2. Convenient
  3. Convenient
  4. All of these
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