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Question

Assertion :If x mL of 0.2 M H2SO4 solution requires 10 mL of 0.24 M KOH solution, then x mL of 0.1 M H2SO3 would require 20 mL of 0.01 M acidified K2Cr2O7 solution. Reason: H2SO3 is a dibasic acid.

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
Both Assertion and Reason are incorrect
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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Milliequivalents of FeC2O4(n=2)= Milliequivalents of Cr2O27(n=1)

Milliequivalents of H2SO4= Milliequivalents of KOH
x×0.2×2=10×0.24×1
x=6 mL

H2SO3(n=2) K2Cr2O7/H(n=6)
(SO23SO24+2e) (6e+Cr2O272Cr3+)

Milliequivalents of H2SO3 Milliequivalents of Cr2O27
x×0.1×220×0.01×6
x=6 mL

312479_277212_ans.png

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