Aldehydes, Ketones and Carboxylic Acids Class 12 MCQs Questions with Answers

1. Which of the following does not answer iodoform test?

2. Glacial acetic acid is_______

3. Trans-esterification is a reaction between:

4. In aldehydes and ketones the carbonyl carbon is_________

5. Which of the following cannot reduce Fehling’s solution?

6. CH3CHO and C6H5 CH2CHO can be distinguished chemically by:

7. Which one the following can be oxidized to the corresponding carbonyl compound?

8. Benzaldehyde can be prepared by the hydrolysis of

9. Which of the following will not give aldol condensation?

10. Which one of the following is not a derivative carboxylic acid?

11. Compound ‘A’ C5H10O forms a phenyl hydrazone and gives a negative Tollen’s reagent test and iodoform test. On reduction with Zn+Hg/HCl, compound A gives n-pentane. The compound ‘A’ is:

12. Formic acid and acetic acid are distinguished by reaction with:

13. Which compound is obtained when acetaldehydes are treated with dilute solution of caustic soda?

14. A mixture of benzaldehyde and formaldehyde on heating with aqueous NaOH solution gives:

15. An inorganic compound producing an organic compound on heating is:

16. The formation of cyanohydrin from a ketone is an example of:

17. Which of the following has the most acidic hydrogen?

18. Chlorination of toluene in the presence of light and heat followed by treatment with aqueous NaOH gives:

19. The polar nature of carbonyl group in aldehydes and ketones is due to____________

20. Schiff’s reagent is________