The p-Block Elements Class 12 MCQs Questions with Answers

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

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

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

4. The three important oxidation states of phosphorus are:

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

6. Catenation property is maximum in:

7. Which of the following statement is incorrect?

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

9. H2S is more acidic than H2O because:

10. Which of the following has maximum ionisation potential?

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

12. Element found from sea water is:

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

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

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

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

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

18. The shape of XeF4 is:

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

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