Companion Chemistry Class 11. We covered all the Companion Chemistry Class 11 MCQs in this post for free so that you can practice well for the exam.
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Companion Chemistry Class 11 Objective for Students
Propionyl chloride on heating with sodium propionate produces:
(A) Propionic anhydride
(B) Propionic acetic anhydride
(C) Propyl propionate
(D) Acetic anhydride
Option a – Propionic anhydride
Increasing order of acidic strength of carboxylic acids is: I) 2-Chloroethanoic acid II) Methanoic acid III) Propanoic acid IV) Ethanoic acid
(A) III < IV < I < II
(B) IV < I < III < II
(C) II < III < I < I
(D) I < IV < II < III
Option a – III
The strongest acid among the following is:
(A) 4-Methoxy benzoic acid
(B) 4-Nitrobenzoic acid
(C) Benzoic acid
(D) Acetic acid
Option b – 4-Nitrobenzoic acid
Acetyl chloride is prepared by heating phosphorus trichloride with:
(A) Acetamide
(B) Acetic acid
(C) Ethanal
(D) Ethanol
Option b – Acetic acid
Propanoic acid on heating with sulfonyl chloride produces:
(A) Propanoyl chloride
(B) n-Propyl chloride
(C) Propanoic anhydride
(D) Propionamide
Option a – Propanoyl chloride
Acetic acid on heating with ethanol gives:
(A) Methyl propionate
(B) Ethyl acetate
(C) Butyric acid
(D) n-Propyl formate
Option b – Ethyl acetate
Fischer esterification is:
(A) Nucleophilic addition
(B) Nucleophilic substitution
(C) Electrophilic substitution
(D) Electrophilic addition
Option b – Nucleophilic substitution
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