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Correct match of the C-H bonds (shown in bold) in Coloumn J with their BDE in Column K is Column J Molecule Column K BDE (kcal mol –1 ) (P) H ⎯ CH(CH 3 ) 2 (i) 132 (Q) H ⎯ CH 2 Ph (ii) 110 (R) H ⎯ CH= CH 2 (iii) 95 (S) H ⎯ C ≡ CH (iv) 88

1. P – iii, Q – iv, R – ii, S – i
2. P –i, Q – ii, R – iii, S – iv
3. P – iii, Q – ii, R – i, S – iv
4. P – ii, Q – i, R – iv, S – iii

Correct answer: P – iii, Q – iv, R – ii, S – i

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