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Hydrogenation of naphthalene (P) with ex...

Hydrogenation of naphthalene (P) with excess hydrogen gas stops cleanly at 1, 2, 3, 4-tetrahydronaphalene (Q). What conclusion can be drawn from this experiment ?

A

the hydrogenation of P is exothermic

B

one aromatic ring of P is more reactive than the aromatic ring of Q

C

one aromatic ring of P is less reactive than the other ring of Q

D

reduction of the first `C = C` of P is faster than reduction of the second or third `C = C`

Text Solution

Verified by Experts

The correct Answer is:
B
Annelation effect.
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