Question

Assertion: Penicillin $\left(G\right)$ is an antihistamine.

Reason: Penicillin $\left(G\right)$ is effective against gram positive as well as gram negative bacteria.

• A. Assertion is correct statement reason is wrong statement
• B. Assertion is wrong statement reason is correct statement
• C. Assertion and reason both are correct statement, but reason does not explain assertion
• D. Both assertion and reason are wrong statements
• E. Assertion and reason both are correct, and reason explains the assertion

Answer 1

The correct option is D

Both assertion and reason are wrong statements

Assertion

Penicillin $\left(G\right)$ is not an antihistamine. It is rather an antibiotic. It is produced by a microorganism $\left(\text{Penicillium, which is a fungus}\right)$ and it can destroy other microorganisms or can inhibit their growth $\left(\text{even in low concentration}\right)$ by interrupting their metabolic process.

Hence, it cannot inhibit the production of histamines (a chemical substance that causes allergic reactions in our body) like antihistamines.

So, assertion is wrong statement.

Reason

Penicillin $\left(G\right)$ is only effective against gram-positive bacteria and not gram-negative bacteria as it has a narrow spectrum (range of its action is limited to only gram-positive bacteria that is why its spectrum is said to be narrow, not broad).

So, reason is wrong statement.

Hence, both assertion and reason are wrong statements.