Nmdcat Practice Paper from PMDC Syllabus | mosaicbro.com

Nmdcat Practice Paper from PMDC Syllabus

7 of 197 questions (Page 21 of 29)

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141 What is the formula of butanoic acid?
Correct Answer: B
Explanation: Butanoic acid has the formula C₄H₈O₂.
142 What is the product when carboxylic acid reacts with SOCl₂ (thionyl chloride)?
Correct Answer: C
Explanation: SOCl₂ converts carboxylic acids into acid chlorides.
143 Decarboxylation of carboxylic acids involves:
Correct Answer: B
Explanation: Decarboxylation removes a carbon atom as CO₂.
144 Which of the following cannot be synthesized by direct oxidation of a primary alcohol?
Correct Answer: D
Explanation: Tertiary alcohols cannot be oxidized to carboxylic acids directly.
145 Carboxylic acids are more acidic than phenols due to:
Correct Answer: A
Explanation: The conjugate base of carboxylic acids is stabilized by resonance, enhancing acidity.
146 Which reagent is best for converting a carboxylic acid to an amide?
Correct Answer: C
Explanation: Carboxylic acids are first converted to acid chlorides (SOCl₂) and then reacted with ammonia to form amides.
147 Cellulase is used in the textile industry to:
Correct Answer: B
Explanation: Cellulase softens cotton fibers by breaking down cellulose.
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