The following purgative interferes with absorption of fat soluble vitamins:

Correct Answer: A

Rationale: Liquid paraffin is a lubricant laxative that can coat the intestinal wall, reducing absorption of fat-soluble vitamins like A, D, E, and K.

Correct Answer: C

Rationale: Loperamide is an opioid receptor agonist that slows gut motility, making it an effective anti-diarrheal agent.

Correct Answer: B

Rationale: Atropine is an antimuscarinic that reduces spasms indirectly; the others are direct smooth muscle relaxants.

Correct Answer: D

Rationale: H. pylori infection is a major cause of peptic ulcers and their complications like bleeding or perforation.

Correct Answer: D

Rationale: Prednisolone, a corticosteroid, can worsen ulcers; the others promote healing or reduce acid.