Pericyclic Reactions, Heterocycles and Natural Products

JKPSC Assistant Professor (Chemistry) · Chemistry · 59 practice questions with answers and explanations: 4 Easy, 55 Medium, 0 Hard.

Sample questions

Sample Easy question 1

Sucrose on hydrolysis gives:

  1. Two glucose molecules
  2. Glucose and galactose
  3. Two fructose molecules
  4. Glucose and fructose
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Answer: D. It is invert sugar.

Sample Easy question 2

Which vitamin is also known as ascorbic acid?

  1. Vitamin C
  2. Vitamin D
  3. Vitamin B1
  4. Vitamin A
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Answer: A. Its deficiency causes scurvy.

Sample Easy question 3

DNA differs from RNA in having:

  1. Thymine and ribose
  2. Uracil and deoxyribose
  3. Thymine and deoxyribose
  4. Uracil and ribose
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Answer: C. RNA has uracil instead of thymine.

Sample Medium question 4

The Skraup synthesis is used to prepare:

  1. Furan
  2. Indole
  3. Quinoline
  4. Pyridine
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Answer: C. It uses aniline, glycerol and sulphuric acid.

Sample Medium question 5

The Hantzsch synthesis is used to prepare:

  1. Quinoline
  2. Indole
  3. Pyridine (dihydropyridines)
  4. Furan
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Answer: C. It uses an aldehyde, a β-keto ester and ammonia.

Sample Medium question 6

Glucose is a:

  1. Aldopentose
  2. Disaccharide
  3. Ketohexose
  4. Aldohexose
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Answer: D. It has five hydroxyl groups.

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