Blog

MCQ-21
Propanoic acid liberates CO₂ from Na₂CO₃. The Carbon of CO₂ comes from.
A. Methyl group
B. Carboxyl group
C. Methylene group
D. Carbonate ion

Answer: D

MCQ-22
2-Butene heated with alkaline or acidic KMnO4 forms __________.
A. Butanoic acid
B. Propanoic acid
C. Ethanoic acid
D. Oxalic acid

Answer: C

MCQ-23
Which of the following has a maximum number of carbon atoms?
A. Succinic acid
B. Adipic acid
C. Oxalic acid
D. Malonic acid

Answer: B

MCQ-24
Which of the following reagent is used to convert carboxylic acids into primary alcohol?
A. LiAIH₄
B. NaBH₄
C. KMnO₄
D. Ni

Answer: A

MCQ-25
The general formula for carboxylic acid is C_nH_2n+1COOH. What is the value of “n” here for formic acid?
A. 1
B. 2
C. 3
D. 0

Answer: D