UGC NET Questions (Paper – 1)

A hypothetical syllogism links conditionals in a chain, using the fact that if P leads to Q and Q leads to R, then P must lead to R. This is a transitive property of the conditional relation and is a recognised valid inference form. It essentially passes the implication through the intermediate step Q.

Option A:
Option A clearly shows the chain P → Q and Q → R leading to P → R, which is valid in standard propositional logic.

Option B:
Option B does not guarantee any relation between P and R; both lead to Q, but nothing links P to R or vice versa.

Option C:
Option C reverses the conclusion and improperly suggests that R implies P, which does not follow from the premises.

Option D:
Option D asserts Q → R, but from P → Q and P → R we cannot generally infer that Q implies R, because Q could arise from other causes without R.