Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusion(s) logically follow(s) from the statements.
Statements:
All physicists are chemists.
No chemists are biologists.
Conclusions:
I. No biologists are physicists.
II. Some biologists are physicists.

Correct option is C

Statements:
All physicists are chemists.
No chemists are biologists.
According to the given information, Venn diagram will be:

Let's analyse the conclusions:
Conclusions:
I. No biologists are physicists. → True
Since every physicist is a chemist, and no chemist can be a biologist, a physicist can never be a biologist.
II. Some biologists are physicists. → False
Since every physicist is a chemist, and no chemist can be a biologist, a biologist can never be a physicists.
Thus, the correct option is (C) Only conclusion (I) follows.