Immunization: practice question

A PSM question in the style of the NEET PG paper. Answer it first, then read why the right option is right and why each of the others is wrong.

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PSM · Immunization

Sample item

What is the main purpose of vaccine cold chain?

Original practice item, not a recalled exam question. Nothing here is recorded.

The answer and the reasoning

C. Preserve vaccine potency

Maintaining recommended storage temperatures preserves vaccine potency from manufacture through administration and prevents avoidable program failure.

Option by option

  • A. Replace safe injection

    Safe injection procedures remain essential independently.

  • B. Increase vaccine volume

    Cold chain does not increase vaccine volume.

  • C. Preserve vaccine potency (correct)

    Correct: cold chain keeps vaccines potent.

  • D. Change vaccine color

    Color change is not its intended purpose.

Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.

More PSM questions

Questions about this PSM question

What is the answer to this PSM question?

The best answer is C, Preserve vaccine potency. Maintaining recommended storage temperatures preserves vaccine potency from manufacture through administration and prevents avoidable program failure.

Why is "Replace safe injection" not the answer?

Safe injection procedures remain essential independently.

Why is "Increase vaccine volume" not the answer?

Cold chain does not increase vaccine volume.

Why is "Change vaccine color" not the answer?

Color change is not its intended purpose.

What concept does this question test?

It tests Immunization in PSM. The correct option holds because: Correct: cold chain keeps vaccines potent.

How hard is this question?

We tag it as an application question: it asks you to use a fact on a patient or a finding. The tag is our own editorial judgement, not an official difficulty rating, so read the reason for every option, not only the answer.

How should I study Immunization?

Practise biostatistics with small calculations until sensitivity, predictive values and risk measures are automatic. Then use the flashcards and the other PSM questions on this site to test what stuck.

Is this a real NEET PG question?

No. It is an original practice item (editorial status: sample, version 1). NextPrep does not publish recalled or leaked questions, and independent faculty review of this item has not been completed yet, so confirm important facts in a standard textbook.