Sulfonylureas are more commonly used than biguanides as oral hypoglycaemics because

Correct Answer: A

Rationale: Sulfonylureas are preferred due to greater efficacy in stimulating insulin release; biguanides don’t cause ketoacidosis.

Correct Answer: D

Rationale: Adrenaline stimulates glucagon release to raise glucose during stress, unlike insulin or somatostatin (inhibitory).

Correct Answer: B

Rationale: Phenformin has a higher risk of lactic acidosis than metformin, leading to its withdrawal in many regions.

Correct Answer: A

Rationale: Chlorpropamide has a longer half-life (up to 36 hours) compared to other sulfonylureas.

Correct Answer: B

Rationale: Betamethasone has minimal mineralocorticoid activity, unlike fludrocortisone (strong) or cortisol.