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NCERTCBSE CHEMISTRY CLASS 12 CHAPTERWISE MCQ QUESTIONS

Welcome to your Unit 10: Haloalkanes and Haloarenes

1. 
Monohalo, dihalo, trihalo and tetrahalo are types of haloalkanes and haloarenes based on the ______

2. 
A monohaloarene is an example of a/an __________

3. 
What is the general formula for haloalkanes? (X=halogen atom, n = 1, 2, 3…)

4. 
What is the IUPAC name of the following compound?

5. 
Which of the following is not the correct IUPAC name for the compound shown?

6. 
Which is the largest halogen atom?

7. 
If the bond length of C-Cl bond in chloromethane is 178pm, what will be the probable bond length of C-Br bond in bromomethane?

8. 
What is the correct order of reactivity of the following haloacids with a given alcohol?

9. 
Which of the following are the most suitable conditions for electrophilic substitution of arenes?

10. 
When excess chlorine is used in electrophilic substitution of toluene, which of the following dichloroarenes are formed?

11. 
Which of the following haloalkanes exist as liquids at room temperature?

12. 
For a particular alkyl group R, what is the correct order of boiling points of the following compounds?

13. 
What will be the class of the nucleophilic substitution product when sodium hydroxide reacts with chloroethane?

14. 
Identify the nucleophile in the substitution reaction between water and bromopropane.

15. 
What is the class of the substitution product of the reaction between LiAlH4 and an alkyl halide?

16. 
As the stability of carbocation formed in the first step of SN1 reaction increases, the rate of the reaction _________

17. 
The SN1 reaction cannot be carried out in which of the following media?

18. 
What is the correct order of reactivity of haloalkanes towards β-elimination reactions?

19. 
How many β-carbon atoms does 2-Bromobutane have?

20. 
Which of the following is not a use of methylene chloride?

21. 
Which of the following is an effect of exposure to low levels of dichloromethane in the air?

Thank You

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