1. Which of the following substance produce acetaldehyde on dry distillation?
A. (CH3COO)2Ca
B. (HCOO)2Ca
C. Both A and B
D. None
✅ The correct answer is option C.
Aldehydes and Ketones MCQs
2. Which of the following will have the highest boiling point?
A. Methanal
B. Ethanal
C. Propanal
D. Hexanone
✅ The correct answer is option D.
3. Which of the following reaction is not shown by ketones?
A. Reaction with HCN
B. Reaction with NaHSO3
C. Reaction with 2 4 dinitrophenyl hydrazine
D. Reaction with Fehling solution
✅ The correct answer is option D.
4. The carbon atom of the carbonyl group is
A. Sp hybridized
B. Sp2 hybridized
C. Cp3 hybridized
D. Dsp2 hybridized
✅ The correct answer is option B.
5. Which of the following substances does not give iodoform test?
A. Acetaldehyde
B. Ethyl alcohol
C. Methyl alcohol
D. Acetone
✅ The correct answer is option C.
6. Formalin is _______ % solution of formaldehyde in water
A. 10%
B. 20%
C. 40%
D. 60%
✅ The correct answer is option C.
7. Which of the following aldehydes shows rapid reaction with sodium nitroprusside?
A. Formaldehyde
B. Acetaldehyde
C. Benzaldehyde
D. Acetone
✅ The correct answer is option D.
8. Acetone reacts with HCN to form a cyanohydrin. It is an example of
A. Electrophilic Addition
B. Electrophilic substitution
C. Nucleophilic addition
D. Nucleophilic substitution
✅ The correct answer is option C.
9. Which of the following compounds will react with Tollens reagent?
A. CH3-CHO
B. CH3-CH-CH3
C. CH3-COOH
D. CH3-CO-CH2-CH3
✅ The correct answer is option A.
10. Which of the following reactions may be associated with aldehyde and ketone?
A. Nucleophile addition
B. Polymerization
C. Oxidation
D. All of the above
✅ The correct answer is option D.