Class XI

Metal oxides or metal hydroxides form
  1. Acids
  2. Base
  3. Salt solution
  4. Sugar solution
Metal core in power cable is not made up of
  1. Sulphur
  2. Phosphorus
  3. Mercury
  4. All of these
A conductor
  1. Changes while conducting electricity
  2. Does not change while conducting electricity
  3. Does not allow flow of electricity
  4. Cannot operate at high pressures
Since ions are held in fixed positions by strong forces, electricity is not conducted by
  1. Electrodes
  2. Electrolytes
  3. Insulators
  4. Metals
 If Magnesium Carbonate (MgCO3) reacts with Hydrochloric Acid (HCl), products will involve
  1. Magnesium chloride
  2. Carbonic acid
  3. Hydrogen gas
  4. Carbon dioxide
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