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JEE Advanced levelSingle correct optionDifficulty 3 of 3hx145

Assume that 1 mol of $CHCl X_{3}$ and 1 mol of $CCl X_{4}$ are both hydrolysed completely by excess aqueous $KOH$ (chloroform to $HCOOK$ , carbon tetrachloride to $K X_{2} CO X_{3}$ , with all chlorine as $KCl$ ). The total number of moles of $KOH$ consumed is

A6
B8
C10
D12

Answer: C

CHCl X_{3} + 4 KOH HCOOK + 3 KCl + 2 H X_{2} O

uses 4 mol.

CCl X_{4} + 6 KOH K X_{2} CO X_{3} + 4 KCl + 3 H X_{2} O

uses 6 mol (4 for the four

Cl

, 2 to neutralise the

CO X_{2}

as carbonate). Total = 10 mol.

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