Pharmaceutical Organic Chemistry 1 MCQs and Notes

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📊 Pharmaceutical Organic Chemistry 1
Q. Which of the following statements regarding chemical properties of acetophenone are wrong……
(1) It is reduced to methyl phenyl carbinol by sodium and ethanol
(2) It is oxidised to benzoic acid with acidified KMnO4
(3) It does not undergo iodoform electrophilic substitution like nitration at meta position
(4) It does not undergo iodoform reaction with iodine and alkali
  • (A) 1 and 2
  • (B) 2 and 4
  • (C) 3 and 4
  • (D) 1 and 3
💬 Discuss
✅ Correct Answer: (C) 3 and 4
📊 Pharmaceutical Organic Chemistry 1
Q. A compound, containing only carbon, hydrogen and oxygen, has a molecular weight of 44. On complete oxidation it is converted into a compound of molecular weight 60. The original compound is ?
  • (A) An aldehyde
  • (B) An acid
  • (C) An alcohol
  • (D) an ether
💬 Discuss
✅ Correct Answer: (A) An aldehyde
📊 Pharmaceutical Organic Chemistry 1
Q. The key step in cannizzaro’s reaction is the intermolecular shift of ……….
  • (A) Proton
  • (B) Hydride ion
  • (C) Hydronium ion
  • (D) Hydrogen bond
💬 Discuss
✅ Correct Answer: (B) Hydride ion
📊 Pharmaceutical Organic Chemistry 1
Q. Which of the following will fail to react with potassium dichromate and dilute sulphuric acid……………
  • (A) Ethyl alcohol (ethanol)
  • (B) Acetaldehyde (ethanal)
  • (C) Secondary propyl alcohol (2-propanol)
  • (D) Acetone (propanone)
💬 Discuss
✅ Correct Answer: (D) Acetone (propanone)
📊 Pharmaceutical Organic Chemistry 1
Q. Acetaldehyde and Acetone can be distinguished by………..
  • (A) Iododorm test
  • (B) Nitroprusside test
  • (C) Fehling's solution test
  • (D) DNP test
💬 Discuss
✅ Correct Answer: (C) Fehling's solution test
📊 Pharmaceutical Organic Chemistry 1
Q. Which of the following aldehydes give red precipitate with Fehling solution ?
  • (A) Benzaldehyde
  • (B) Salicylaldehyde
  • (C) Acetaldehyde
  • (D) None of these
💬 Discuss
✅ Correct Answer: (C) Acetaldehyde
📊 Pharmaceutical Organic Chemistry 1
Q. Which of the following is used to detect aldehydes…………..
  • (A) Million's test
  • (B) Tollen's reagent
  • (C) Neutral ferric chloride solution
  • (D) Molisch's test
💬 Discuss
✅ Correct Answer: (B) Tollen's reagent
📊 Pharmaceutical Organic Chemistry 1
Q. The reagent with which both aldehyde and acetone react easily is…………….
  • (A) Fehling's reagent
  • (B) Grignard reagent
  • (C) Schiff's reagent
  • (D) Tollen's reagent
💬 Discuss
✅ Correct Answer: (B) Grignard reagent

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