P-Block Elements Boron & Carbon Family Test Online MCQs

1. On dissolving moderate amount of sodium metal in liquid NH₃ at low temperature, which one of the following does not occur?

2. Nitrolium is:

3. Sodium carbonate is soluble in water because of

4. The pair whose both species are used in ant-acid medicinal preparations is:

5. Among the following components of cement which is present in highest amount?

6. A metal salt solution forms a yellow precipitate with potassium chromate in acetic acid, a white precipitate with dil H₂SO₄, but gives no precipitate with NaCl. The metal salt solution will consist of:

7. The commercial salt is purified by passing

8. One g equimolecular mixture of Na₂CO₃ and NaHCO₃ is reacted with 0.1 N HCl. The mL of 0.1 N HCl required to react completely with the above mixture is:

9. Which one of the following hydroxide is insoluble in water?

10. Sodium on heating with moist air produces

11. Which property of sodium is being used in street lights?

12. Chemical A is used for softening of water to remove temporary hardness. A reacts with sodium carbonate to produce caustic soda.
When CO₂ is bubbled through ‘A’, it turns cloudy, Chemically ‘A’, is:

13. The first ionization potential is maximum for:

14. Na₂CO₃ reacts with SO₂ in alkaline medium to form:

15. Which one of the following alkaline earth metals shows some anomalous behavior and has same electro negativity as aluminium?