Class XI

A salt(s) and H2(g) is produced if reactants are
  1. An acid and oxide
  2. An acid and a metal
  3. An acid and base
  4. An acid and a sodium hydrogen carbonate
Formula of Copper Hydroxide is
  1. Cu(OH)2
  2. CO2
  3. CuHOH
  4. CuO2
 Copper ion can be written as
  1. Co+1
  2. Co+2
  3. Cu+1
  4. Cu+2
Na2SO4 stands for
  1. Ammonium sulphate
  2. Sodium sulphite
  3. Sodium sulphate
  4. Sodium monosulphate oxidate
 In diamond, arrangement of carbon is
  1. Hexagonal
  2. Tetrahedral
  3. Octagonal
  4. Cube shaped
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