Statement I: Equal volumes of 0.3 M $H_{2} S O_{4}$ solution and 0.2 M $H_{3} P O_{4}$ solution will require the same volume of the same $N a O H$ solution for complete neutralization.
Statement II: $H_{2} S O_{4}$ is a dibasic and $H_{3} P O_{4}$ is a tribasic acid.

Both statements are CORRECT, and Statement II is the CORRECT explanation of Statement I.

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Both statements are CORRECT, and Statement II is NOT the CORRECT explanation of Statement I.

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Statement I is CORRECT, but Statement II is INCORRECT.

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Statement I is INCORRECT, but Statement II is CORRECT.

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Solution

The correct option is B Both statements are CORRECT, and Statement II is the CORRECT explanation of Statement I.
$H_{3} P O_{4}$ is tribasic acid. $n = 3$
$∴$ moles of $H^{\oplus} = 3 \times 0.2 = 0.6$
$H_{2} S O_{4}$ is dibasic acid. $n = 2$
$∴$ moles of $H^{\oplus} = 2 \times 0.3 = 0.6$
$∴$ Both will require some volume of $N a O H$
$∴$ Statement I & II both are correct
& statement II is the correct explanation for the statement I

option "A" correct

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(C) If Statement I is CORRECT, but Statement II is INCORRECT.
(D) If Statement I is INCORRECT, but Statement II is CORRECT.

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Statement I: Equal volumes of 0.3 M H2SO4 solution and 0.2 M H3PO4 solution will require the same volume of the same NaOH solution for complete neutralization.Statement II: H2SO4 is a dibasic and H3PO4 is a tribasic acid.

Statement I: Equal volumes of 0.3 M $H_{2} S O_{4}$ solution and 0.2 M $H_{3} P O_{4}$ solution will require the same volume of the same $N a O H$ solution for complete neutralization.
Statement II: $H_{2} S O_{4}$ is a dibasic and $H_{3} P O_{4}$ is a tribasic acid.