MCQs of Aldehydes, Ketones and Carboxylic Acids

Aldehydes, Ketones and Carboxylic Acids MCQs

MCQs of Aldehydes, Ketones and Carboxylic Acids

Showing 141 to 150 out of 162 Questions

141.

Which reagent from the following cannot reduce carboxylic group (-COOH) ?

(a)	LiAlH₄
(b)	NaBH₄
(c)	B₂H₆
(d)	HI + Red P

142.

In the reaction,

{CH}_{3} COOH \overset{{LiAlH}_{4}}{\to} A \overset{{PCl}_{5}}{\to} B \overset{Alc . KOH}{\to} C

, the product C is _____ .

(a)	Ethylene
(b)	Acetyl chloride
(c)	Acetaldehyde
(d)	Acetylene

143.

What is the acid present in vinegar, used to bring about delicious sour taste in food ?

(a)	Citric acid
(b)	Ascorbic acid
(c)	Tartaric acid
(d)	Acetic acid

144.

What is used in the preparation of polyester ?

(a)	Benzene - 1, 2 - dicarboxylic acid
(b)	Benzene - 1, 3 - dicarboxylic acid
(c)	Benzene - 1, 4 - dicarboxylic acid
(d)	None of the above

145.

Select the correct order of reactivity for acetophenone, benzophenone, methanal, ethanal, and propanone.

(a)	Ethanal > propanone > methanal > acetophenone > benzophenone
(b)	Methanal > propanone > acetophenone > benzophenone > ethanal
(c)	Benzophenone < acetophenone < propanone < ethanal < methanal
(d)	Acetophenone < benzophenone < ethanal < methanal < propanone

146.

Which of the following alkyl benzenes cannot be oxidized by alkaline KMnO₄

(a)	p - Xylene
(b)	Ethyl benzene
(c)	Isopropyl benzene
(d)	Tertiary butyl benzene

147.

_____ is the strongest acid among the following acids.

(a)	H·COOH
(b)	CH₃CH₂CH (Cl) COOH
(c)	Cl·CH₂CH₂CH₂COOH
(d)	CH₃COOH

148.

What is the correct descending order of acidic strength for the following acids ?
(i) Methanoic acid (ii) Ethanoic acid (iii) Propanoic acid (iv) Butanoic acid

(a)	(i) > (ii) > (iii) > (iv)
(b)	(ii) > (iii) > (iv) > (i)
(c)	(i) > (iv) > (iii) > (ii)
(d)	(iv) > (i) > (iii) > (ii)

149.

Benzoic acid when heated with X gives benzene and phenol when heated with Y (also) gives benzene. What are respectively X and Y ?

(a)	Sodalime and copper
(b)	Zn powder and NaOH
(c)	Zinc powder and sodalime
(d)	Sodalime and Zn - powder

150.

Whose hydrolysis gives two different organic compounds ?

(a)	CH₃COOH
(b)	CH₃CONH₂
(c)	CH₃COOC₂H₅
(d)	(CH₃CO)₂O

Showing 141 to 150 out of 162 Questions