Question 1
Which functional group is responsible for the characteristic blue colour produced by phenolphthalein in alkaline solution?
Correct Answer:
An extended quinoid (para-quinoid) chromophore formed after lactone ring opening
Question 2
Aspirin is synthesised by acetylation of salicylic acid using which reagent?
Correct Answer:
Acetic anhydride with a trace of concentrated sulphuric acid or phosphoric acid
Question 3
According to the Noyes-Whitney equation, the dissolution rate of a solid drug is directly proportional to which of the following?
Correct Answer:
Surface area of the solid in contact with the dissolution medium
Question 4
Propranolol exerts its antihypertensive and antianginal action primarily by:
Correct Answer:
Non-selective competitive antagonism at β1 and β2 adrenergic receptors
Question 5
The active constituent of Cinchona bark used as an antimalarial is:
Correct Answer:
Quinine, a quinoline alkaloid
Question 1
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About this Exam

Prepare with the GPAT Practice Questions - Graduate Pharmacy Aptitude Test Exam practice quiz. This question bank includes 100 questions covering drug, action, mainly, acid, and equation. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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GPAT Practice Questions - Graduate Pharmacy Aptitude Test Exam

This practice set contains 100 questions from the matching question bank and focuses on drug, action, mainly, acid, and equation. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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