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Match the column ( array |l|l|l|l| & Column-I & & Column-II & (Compounds) & & (pKa values) (a) & C ₂ H ₅ OH & (p) & 8.3 (b) & C ₆ H ₅ OH & (q) & 10.2 (c) & p - CH ₃- C ₆ H ₄- OH & (r) & 15.9 (d) & m - NO ₂- C ₆ H ₄- OH & (s) & 10.0 array ) Correct option is-

Options

  1. Aa-r, b-s, c-p, d-q
  2. Ba-r, b-s, c-q, d-p
  3. Ca-s, b-r, c-p, d-q
  4. Da-s, b-p, c-q, d-r

Correct answer

B. a-r, b-s, c-q, d-p

Step-by-step solution

Let's carefully match each compound with its pKa value: - (a) ( C ₂ H ₅ OH ) (ethanol) ( pKa 15.9 ( r ) ) - (b) ( C ₆ H ₅ OH ) (phenol) ( pKa 10.0 ) (s) - (c) p- ( CH ₃- C ₆ H ₄- OH ( p - cresol ) pKa 10.2 ) (q) - (d) ( m - NO ₂- C ₆ H ₄- OH ( m )-nitrophenol) ( pKa 8.3 ( p ) ) ( ) Correct matching: (a-r), (b-s), (c-q), (d-p) So, the answer is: (2)

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