The p-Block Elements Class 12 MCQs Questions with Answers

1. The three important oxidation states of phosphorus are:

2. Element found from sea water is:

3. H2S is more acidic than H2O because:

4. The oxoacid of halogen having maximum acidic character is:

5. Nitrogen forms N2, but phosphorus is converted into P4 from P, the reason is:

6. Which of the following statement is incorrect for group 15 elements ?

7. When chlorine reacts with cold and dilute solution of sodium hydroxide, it forms:

8. In the manufacture of sulphuric acid by contact process Tyndall box is used to:

9. Pentavalence in phosphorus is more stable when compared to that of nitrogen even though they belong to same group. This is due to:

10. Fluorine differs from rest of the halogens in some of its properties. This is due to:

11. Which of the following compounds contains S=O and S=S bonds?

12. Among the tri halides of Nitrogen, which one is the least basic?

13. Ionic radii (in Å) of As3+, Sb3+ and Bi3+ follow the order:

14. Which one of the following contains the maximum number of lone pair of electrons on the central atom?

15. Which of the following statement is incorrect?

16. Which of the following has maximum ionisation potential?

17. Helium is preferred to be used in balloons instead of hydrogen because it is:

18. Among the following, which one is a wrong statement:

19. Catenation property is maximum in:

20. The shape of XeF4 is: