MCQ Group 18 Elements, Class 12 Chemistry

1. There will be total 20 MCQ in this test.
2. Please keep a pen and paper ready for rough work but keep your books away.
3. The test will consist of only objective type multiple choice questions requiring students to mouse-click their correct choice of the options against the related question number.
4. No negative marking for incorrect choice.
5. Please click on “Finish the Test” when you want to exit.
6. All the best – Happy Studying

1. Partial hydrolysis of XeF₆ yields:

Xenon trioxide

Xenon tetrafluoride

Xenon dioxydifluoride

Xenon oxyfluoride

Your comments:

Question 1 of 20

2. The valency of inert gas is:

Zero

1

2

3

Your comments:

Question 2 of 20

3. When Xenon reacts with fluorine in a ratio of 1:5 at a temperature of 873 K it forms:

XeF₄

XeF₆

XeOF₄

XeF₂

Your comments:

Question 3 of 20

4. Which one of the following has a linear shape?

XeF₄

XeF₂

XeO₃

XeOF₄

Your comments:

Question 4 of 20

5. Which of the following gaseous molecule is monoatomic?

Oxygen

Helium

Nitrogen

Chlorine

Your comments:

Question 5 of 20

6. Maximum number of compounds are known in case of :

Krypton

Helium

Argon

Xenon

Your comments:

Question 6 of 20

7. What is the hybridisation of Xe in XeO₃?

A

B

C

D

Your comments:

Question 7 of 20

8. Maximum number of compounds are known in the case of which inert gas?

Krypton

Xenon

Helium

Argon

Your comments:

Question 8 of 20

9. The element having highest ionisation potential is:

Oxygen

Helium

Nitrogen

Hydrogen

Your comments:

Question 9 of 20

10. Noble gases are inert and do not form compounds like other elements because of their:

Low ionization energy

High electron affinities

Close shell electronic configuration

High density

Your comments:

Question 10 of 20

11. The inert gases have electronic configuration of:

ns²np⁶

ns²np³

ns²

ns²np²

Your comments:

Question 11 of 20

12. Shape of XeF₂ is:

Octahedral

Tetrahedral

Linear

Square planar

Your comments:

Question 12 of 20

13. Which of the following is the life saving mixture for an asthma patient ?

Mixture of neon and oxygen

Mixture of argon and oxygen

Mixture of helium and oxygen

Mixture of xenon and nitrogen

Your comments:

Question 13 of 20

14. The element which has not yet been reacted with F₂ is :

Kr

Ar

Xe

Rn

Your comments:

Question 14 of 20

15. Shape of XeF₄:

Linear

Square planar

Tetrahedral

Octahedral

Your comments:

Question 15 of 20

16. In case of noble gases the general trend in the melting points and boiling points, down the group, is

Decreases from He to Ar and then increases from Ar to Rn.

Decreases from He to Rn

Increases from He to Rn

Increases from He to Ar and decreases from Ar to Rn

Your comments:

Question 16 of 20

17. Which of the outer electronic configuration represent argon?

ns²np⁴

ns²

ns²np²

ns²np⁶

Your comments:

Question 17 of 20

18. Geometry of xenon oxyfluoride (XeOF4) is

Octahedral

Tetrahedral

Linear

Square pyramidal

Your comments:

Question 18 of 20

19. Which among the following Xe compounds is highly explosive and a powerful oxidising agent ?

XeO₃

XeOF₄

XeF₂

XeF₄

Your comments:

Question 19 of 20

20. Complete hydrolysis of XeF₄ and XeF₆ results in the formation of:

XeOF₃

XeOF₂

XeOF₄

XeO₃

Your comments:

Question 20 of 20

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