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Organic Chemistry Questions and Answers – Condensation Reactions | Organic Chemistry Multiple Choice Questions and Answers

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Free download in PDF Organic Chemistry Multiple Choice Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams like UPSC, NDA, SSC etc. These short solved questions or quizzes are provided by Gkseries./p>

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(1) Condensation reaction is the reverse of which of the following reaction?
[A] lock and key hypothesis
[B] oxidation
[C] hydrolysis
[D] glycogen formation
Answer: hydrolysis
(2) Condensation reaction always results in the formation of complex sugar (disaccharide or polysaccharide) and which of the following?
[A] amino acids
[B] lipids
[C] water
[D] maltose
Answer: water

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(3) In which condensation an enol or an enolate ion reacts with a carbonyl compound to form a β-hydroxyaldehyde or β-hydroxyketone (an aldol reaction), followed by dehydration to give a conjugated enone happens?
[A] Aldol condensation
[B] Claisen reduction
[C] Henry condensation
[D] Knoevenagel condensation
Answer: Aldol condensation
(4) Which combination of carbonyl compounds gives phenyl vinyl ketone by an aldol condensation?

[A] Acetophenone and ketone
[B] Acetophenone and aldehyde
[C] Benzaldehyde and aldehyde
[D] Benzaldehyde and ketone
Answer: Acetophenone and ketone
(5) Which ester will not give a good yield of the Claisen condensation product with NaOEt in EtOH?

[A] (a)
[B] (b)
[C] (c)
[D] (d)
Answer: (c)
(6) What will be the product for the following reaction?

[A] trans-2,4-pentadienoic acid
[B] cis -2,4-pentadienoic acid
[C] 3-aminobenzoic acid
[D] 2-aminobenzoic acid
Answer: trans-2,4-pentadienoic acid
(7) What will be the product of the following reaction?

[A] –Nitro alcohol
[B] -nitro alcohol
[C] Nitroalkene
[D] -amino alcohol
Answer: –Nitro alcohol
(8) What will be the product ‘B’ in the reaction?

[A] α-nitro alcohol
[B] α-nitro ketone
[C] nitroalkene
[D] β-amino alcohol
Answer: α-nitro ketone
(9) What will be the product ‘B’ in the reaction?

[A] α-nitro alcohol
[B] α-nitro ketone
[C] nitroalkene
[D] β-amino alcohol
Answer: nitroalkene
(10) What will be the product ‘B’ in the reaction?

[A] α-nitro alcohol
[B] α-nitro ketone
[C] nitroalkene
[D] β-amino alcohol
Answer: β-amino alcohol

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