Question

Biologicals are tested in

• A. Mumbai
• B. Kolkatta
• C. Chennai
• D. Kasauli

Hint:

The Central Drugs Laboratory in Kasauli is the designated testing center for biological products in India.

Answer 1

The Correct Option is D

This is a location-recall fact about India's drug regulatory infrastructure.
Mumbai, Kolkata and Chennai are pharmaceutical/commercial hubs but are not tied to a dedicated national biologicals-testing laboratory.
Kasauli houses the Central Research Institute along with the Central Drugs Laboratory, which is specifically responsible for testing vaccines and other biological products in India.
So the answer is Kasauli.

Answer 2

Approach this by associating each city with its known role in India's pharmaceutical/regulatory landscape, then match that role to "testing of biologicals."

1. Mumbai: Known for pharmaceutical company headquarters, ports, and general drug licensing offices — not for a national biologicals-testing laboratory.
2. Kolkatta: Has certain health institutions but is not the seat of India's biologicals-testing infrastructure.
3. Chennai: A hub for manufacturing and exporting pharmaceutical products, not for centralised testing of vaccines and biological products.
4. Kasauli: Long associated with the Central Research Institute, which has historically tested and standardised vaccines and sera for the entire country — exactly the role the question is describing.

Since Kasauli is the only city among the four tied to a dedicated national biologicals-testing institute, it must be the answer, while the others are ruled out for lacking that specific specialised role.

Therefore, the correct answer is Kasauli.