Punjab 12th Class Chemistry Chapter 4 Group V-A and Group VI-A Elements MCQs Test Online
Questions 20
Total Marks 40
Time 20 Mins
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Punjab 12th Class Chemistry Chapter 4 Group V-A and Group VI-A Elements MCQs Test Online

Punjab 12th Class Chemistry Chapter 4 Group V-A and Group VI-A Elements MCQs Test Online

 

Question 1 of 20

Chemistry

1. In comparison with oxygen gas. a strong triple bond is present between two nitrogen atoms in a molecule and therefore nitrogen gas is:
1.
2.
3.
4.

Question 1 of 20

Question 2 of 20

2. The compound N20 causes disease:
1.
2.
3.
4.

Question 2 of 20

Question 3 of 20

3. Laughing gas is:
1.
2.
3.
4.

Question 3 of 20

Question 4 of 20

4. The most electronegative element in group-VA is
1.
2.
3.
4.

Question 4 of 20

Question 5 of 20

5. Gold dissolves in aqua regain to form.
1.
2.
3.
4.

Question 5 of 20

Question 6 of 20

6. The brown gas formed, when metal reduces HNO3 to
1.
2.
3.
4.

Question 6 of 20

Question 7 of 20

7. NO2 is called
1.
2.
3.
4.

Question 7 of 20

Question 8 of 20

8. Out of all the elements of group VIA, the highest melting and boiling points is shown by the elements
1.
2.
3.
4.

Question 8 of 20

Question 9 of 20

9. Out of all the elements of group VA, the highest ionization energy is possessed by
1.
2.
3.
4.

Question 9 of 20

Question 10 of 20

10. Among group VA elements, the most electronegative element is
1.
2.
3.
4.

Question 10 of 20

Question 11 of 20

11. Which catalyst is used in contact process
1.
2.
3.
4.

Question 11 of 20

Question 12 of 20

12. Chemical formula of laughing gas is
1.
2.
3.
4.

Question 12 of 20

Question 13 of 20

13. The lowest ionization energy is possessed by:
1.
2.
3.
4.

Question 13 of 20

Question 14 of 20

14. Which of the following is a reddish brown gas:
1.
2.
3.
4.

Question 14 of 20

Question 15 of 20

15. Laughing gas is chemically
1.
2.
3.
4.

Question 15 of 20

Question 16 of 20

16. SO3 is not absorbed in water directly to from H2SO4 because
1.
2.
3.
4.

Question 16 of 20

Question 17 of 20

17. Which of the following gas is evolved when cooper reacts with dil HNO3?
1.
2.
3.
4.

Question 17 of 20

Question 18 of 20

18. Oxidation of NO in air produces
1.
2.
3.
4.

Question 18 of 20

Question 19 of 20

19. Free nitrogen and oxygen are present in atmosphere but they do not react with each other under normal conditions because
1.
2.
3.
4.

Question 19 of 20

Question 20 of 20

20. Which of the following specie has the maximum number of unpaired electrons
1.
2.
3.
4.

Question 20 of 20


 

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