Class XI

Burning of glucose produces heat and
  1. Carbon dioxide (gas)
  2. Water (gas)
  3. Oxygen (gas)
  4. Both A and B
 Formula of calcium hydrogen sulphate is
  1. CaHSO4
  2. Ca(HCO3)3
  3. Ca(HSO4)2
  4. Ca(HSO4)3
 Valency is also referred to as
  1. Combining power
  2. Volatility
  3. Rigidity
  4. Number of electron shells
 Calcium carbonate CaCO3 is a
  1. Solid
  2. Liquid
  3. Gas
  4. Aqueous
Consider chemical reaction ZnCO3 + HNO3 → Al(NO3)3 + H2O, number of HNO3 molecules required for a balanced equation will be
  1. 1
  2. 2
  3. 3
  4. 4
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