Mole Concept MCQ Quiz - Multiple Choice Questions & Answers

1. Which one of the following statements is incorect ?

1. One gram atom of carbon contains avogadros number of atoms
2. One mole of oxygen gas contains Avogadros number of atoms
3. One mole of hydrogen contains Avogadros number of atoms
4. One mole of electrons stands for 6.02x10²³ electrons

2. 0.224 L of H₂ gas at S.T.P is equivalent to

1. 1 mol
2. 1g
3. 6.02 × 10²² molecules
4. 0.01 mol

3. 100 g caco₃ is treated with I litre of 1N HCl. What would be the weight of co₂ libereted after the completion of the reaction ?

1. 5.5 g
2. 11g
3. 22g
4. 33g

4. 11.2 litre of a gas at STP weighs 14 g. The gas could not be

1. N₂
2. CO
3. B₂H₆
4. N₂O

5. 11.2 Litres of a gas at STP weighs 14g. The gas could not be

1. N₂0
2. CO
3. B₂H₆
4. N₂

6. 2 moles of H atoms at NTP occupy a volume of

1. 11.2 litres
2. 44.8 litres
3. 2 litres
4. 22.4 litres

7. 2.0 g of oxygen contains number of atoms same as in

1. 4g of s
2. 7g of nitrogen
3. 0.5 g of H₂
4. 12.3 g of Na.

8. 22.4 litres of water vapour at NTP, when condensed to water, occupies an approximate volume of

1. 18 litres
2. 1 litre
3. 1 mL
4. 18 ml

9. 5 moles of a gas in closed vessel was heated from 300 K to 600 K. the pressure of gas doubled The number of moles of the gas will be

1. 5
2. 2.5
3. 10
4. 20

10. 5.0 litre of 0.4 M H₂SO₄ Contains

1. 2.0 Mole Of H₂SO₄
2. 0.4 mole H₂SO₄
3. 5.0 mole H₂SO₄
4. 2.0 moles H₂O