Basics of Organic Reaction Mechanism MCQs Question and Answer in Engineering Chemistry

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Each section contains 100 MCQs on Basics of Organic Reaction Mechanism .

¹H NMR spectrum of [18]-annulene shows

A) only one peak at δ 7.2 (18H) B) only one peak at δ 5.0 (18H) C) two peaks at δ 9.0 (12H) and δ - 3.0 (6H) D) two peaks at δ 9.0 (6H) and δ - 3.0 (12H)

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

Oxymercuration-demercuration reaction of t-methylcyclohexene gives

A) cis-2-methylcyclohexanol B) trans-2-methylcyclohexanol C) 1-methylcyclohexanol D) mixture of cis and trans-2-methylcyclohexano

Discuss

Answer & Solution

Answer: Option C

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Identify the correct stereochemical relationship amongst the hydrogen atoms H_a, H_b and H_c in the following molecule
Basics of Organic Reaction Mechanism mcq question image

Basics of Organic Reaction Mechanism mcq question image

A) H_a and H_b : enantiotopic B) H_a and H_b : diastereotopic C) H_a and H_c : enantiotopic D) H_a and H_c : diastereotopic

Discuss

Answer & Solution

Answer: Option A

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Esterification of the acid P with the alcohol Q will give
Basics of Organic Reaction Mechanism mcq question image

A) only one enantiomer B) a mixture of diastereomers C) a mixture of enantiomers D) only one diastereomer

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Answer & Solution

Answer: Option A

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Proteins are biopolymers. The monomer units present in them are

A) carbohydrates B) amino acids C) fatty acids D) alkenes

Discuss

Answer & Solution

Answer: Option B

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The acylanion equivalents among the following compounds (P-S) are
Basics of Organic Reaction Mechanism mcq question image

A) P and Q B) Q and R C) P and S D) Q and S

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Answer & Solution

Answer: Option D

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Identify the correct set of stereochemical relationships amongst the following monosaccharides I-IV
Basics of Organic Reaction Mechanism mcq question image

A) I and II are anomers; III and IV are epimers B) I and III are epimers; II and IV are anomers C) I and II are epimers; III and IV are anomers D) I and III are anomers; I and II are epimers

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Answer & Solution

Answer: Option D

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(E)-3-bromo-3-hexene when treated with CH₃O^- in CH₃OH gives

A) 3-hexyne B) 2-hexyne C) 2, 3-hexadiene D) 2, 4-hexadiene

Discuss

Answer & Solution

Answer: Option A

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The configurations of the reactant and the product in the following reaction, are
Basics of Organic Reaction Mechanism mcq question image

A) R, R B) R, S C) S, R D) S, S

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Answer & Solution

Answer: Option D

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The absolute configurations of two chiral centres in the following molecule are
Basics of Organic Reaction Mechanism mcq question image

A) 2(R), 3(S) B) 2(R), 3(R) C) 2(S), 3(S) D) 2(S), 3(R)

Discuss

Answer & Solution

Answer: Option B

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