Alcohols, Phenols, and Ethers Class 12 MCQs Questions with Answers

1. Benzenediazonium chloride on reaction with phenol in weakly basic medium gives:

2. Dehydration of alcohol is an example of:

3. Which of the following reagents cannot be used to distinguish between phenol and benzyl alcohol?

4. 1-propanol and 2-propanol can be best dis¬tinguished by:

5. During dehydration of alcohols to alkenes by heating with cone. H2SO4 the initial step is:

6. Catalytic Dehydrogenation of Primary Alcohol gives a___

7. In the reduction
R — CHO + H2 → RCH2OH
the catalyst used is :

8. Which of the following reacts with NaOH to give an alcohol?

9. Phenol reacts with Br2 in CS2 at low temperature to give:

10. Dehydration of alcohol is an example of:

11. Which of the Following is Formed when Glycerol is heated with Oxalic Acid at 503K?

12. When Phenol is treated with Excess Bromine Water it gives___

13. Phenols are more acidic than alcohols because:

14. Which of the Following is True?

15. Ethylene reacts with Baeyer’s reagent to give:

16. Among the following sets of reactants which one produces anisole?

17. Acid-cataylysed hydration of alkenes except ethene leads to the formation of:

18. Which compound is predominantly formed when phenol is allowed to react with bromine in aqueous medium?

19. HBr reacts fastest with:

20. Wood spirit is known as acetone: