P-Block Elements Boron & Carbon Family Test Online MCQs

1. The first ionization potential is maximum for:

2. An inorganic compound which on heating first melt, then solidifies and liberates a gas, is

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

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

5. 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:

6. 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:

7. The correct sequence of increasing melting points of BeCI₂, MgCI₂, CaCI₂, SrCI₂ and BaCI₂ is

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

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

10. The commercial salt is purified by passing

11. Largest difference in radii is found in case of the pair

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

13. The molecular formula of Plaster of paris is:

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

15. Sodium on heating with moist air produces