Vaccines: 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.

Try it

PSM · Vaccines

Sample item

What preserves vaccine potency in transit?

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

The answer and the reasoning

A. Cold chain

This item reviews Vaccines; Cold chain is the best answer because it directly fits the forensic or public-health principle described.

Option by option

  • A. Cold chain (correct)

    Correct. Cold chain is supported by the defining principle.

  • B. Sunlight

    Sunlight is plausible but not the single best answer.

  • C. Warm storage

    Warm storage does not match the stated scenario.

  • D. Open shelf

    Open shelf is not supported by the key finding.

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 A, Cold chain. This item reviews Vaccines; Cold chain is the best answer because it directly fits the forensic or public-health principle described.

Why is "Sunlight" not the answer?

Sunlight is plausible but not the single best answer.

Why is "Warm storage" not the answer?

Warm storage does not match the stated scenario.

Why is "Open shelf" not the answer?

Open shelf is not supported by the key finding.

What concept does this question test?

It tests Vaccines in PSM. The correct option holds because: Correct. Cold chain is supported by the defining principle.

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 Vaccines?

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.