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Organic Chemistry Questions and Answers – Transesterification | Organic Chemistry Multiple Choice Questions and Answers

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(1) Which of the following is true about transesterification?
[A] exchanging the organic alkyl group of an ester with the organic group alkyl of an alcohol
[B] exchanging the organic alkyl group of an alcohol with the organic group alkyl of an ester
[C] exchanging the organic alkyl group of an ester with the organic group alkyl of an alkane
[D] exchanging the organic alkyl group of an ester with the organic group alkyl of an ether
Answer: exchanging the organic alkyl group of an ester with the organic group alkyl of an alcohol
(2) What is the geometry of the intermediate formed in the mechanism of transesterification?
[A] Octahedral
[B] Square planner
[C] Tetrahedral
[D] Square bipyramidal
Answer: Tetrahedral
(3) What chemical reaction makes biodiesel?
[A] Transesterification
[B] Sublimation
[C] Polymerization
[D] Fermentation
Answer: Transesterification
(4) Polyethylene terephthalate is prepared by a transesterification reaction.
[A] True
[B] False
Answer: True
(5) What type of solution is used in transesterification for the determination of fatty acid compositions?
[A] Methanol in NaOH
[B] Methanol in NaCl
[C] Methanol in KOH
[D] Methanol in H2O
Answer: Methanol in NaOH
(6) Transesterification reaction is an irreversible reaction.
[A] True
[B] False
Answer: False
(7) Which of the following is the product formed when methyl ethanoate and ethanol in presence of hydrochloric acid?
[A] Ethyl ethanoate
[B] Methyl ethanoate
[C] Ethyl propanoate
[D] Propyl ethanoate
Answer: Ethyl ethanoate
(8) Which of the following is the product formed when alkylene carbonate and alcohol in presence of hydrochloric acid?
[A] Dialkyl carbonate
[B] Methyl ethanoate
[C] Alkyl carbonate
[D] Propyl ethanoate
Answer: Dialkyl carbonate
(9) Which of the following is the product formed when methyl propanoate and ethanol in presence of hydrochloric acid?
[A] Ethyl ethanoate
[B] Methyl ethanoate
[C] Ethyl propanoate
[D] Propyl ethanoate
Answer: Ethyl propanoate
(10) Which of the following is the product formed when butyl acetate and ethanol in presence of hydrochloric acid?
[A] Ethyl ethanoate
[B] Methyl acetate
[C] Ethyl acetate
[D] Propyl ethanoate
Answer: Ethyl acetate
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