300+ TOP MCQs on Aldehydes, Ketones and Carboxylic Acids and Answers

NEET  Chemistry is the very imporatant paper in the Medical Entrance EXAM. So these NEET Chemistry MCQs with Answers for all Concepts as per the new syllabus. Practice daily with these NEET Chemistry objective questions on air pollution. NEET Chemistry Aldehydes, Ketones and Carboxylic Acids Multiple Choice Questions

MCQs on Aldehydes, Ketones and Carboxylic Acids :

1. A mixture of benzaldehyde and formaldehyde on heating with aqueous NaOH solution gives
(A) benzyl alcohol + sodium formate
(B) sodium benzoate + methanol
(C) benzyl alcohol + methanol
(D) sodium benzoate + sodium formate

Answer

Answer: (a)

2. Which of the following has the most acidic hydrogen?
(A) hexane-2,4-dione
(B) hexane-2,3-dione
(C) hexane-2,5-dione
(D) hexane-3-one

Answer

Answer: (a)

3. A new C-C bond formation is possible in
(A) cannizzaro reaction
(B) friedel crafts reaction
(C) clemmensen reduction
(D) reimer tiemann reaction

Answer

Answer: (b,d)

4. Under Wolff-Kishner reduction conditions, the conversions which may be brought about are
(A) cyclohexanone into cyclohexane
(B) benzaldehyde into benzyl alcohol
(C) cyclohexanone into cyclohexanol
(D) benzophenone into diphenylmethane

Answer

Answer: (a,d)

5. The formation of cyanohydrin from a ketone is an example of
(A) electrophilic addition
(B) nucleophilic addition
(C) nucleophilic substitution
(D) electrophilic substitution

Answer

Answer: (b)

6. Benzoic acid reacts with conc.HNO₃ and conc.H₂SO₄ to give
(A) o-nitrobenzoic acid
(B) p-nitrobenzoic acid
(C) m-nitrobenzoic acid
(D) o,p-dinitrobenzoic acid

Answer

Answer: (c)

7. An inorganic compound producing an organic compound on heating is
(A) ammonium cyanate
(B) soda lime
(C) sodamide
(D) potassium cyanide

Answer

Answer: (a)

8. The reaction of ethyl formate with an excess of CH₃MgI followed by hydrolysis gives
(A) ethanol
(B) n-propyl alcohol
(C) propanal
(D) isopropyl alcohol

Answer

Answer: (d)

9. Formic acid and acetic acid are distinguished by reaction with
(A) sodium ethoxide
(B) sodium
(C) HgCl₂
(D) 2,4-dinitrophenylhydrazine

Answer

Answer: (c)

10. Heating a mixture of sodium benzoate and soda lime gives
(A) calcium benzoate
(B) benzene
(C) sodium benzoate
(D) methane

Answer

Answer: (b)