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Standard XII

Chemistry

Vant Hoff's Equation and Effect of Temperature on Equilibrium Constant

Assertion :Ni...

Question

Assertion :Nitrates give brown fumes with concentrated sulphuric acid due to formation of nitrogen dioxide. Reason: Sulphuric acid can act as oxidizing agent also.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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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
$N i t r a t e s$ are treated with concentrated $H_{2} S O_{4},$ brown fumes are seen. This is due to the formation of $N i t r o g e n$ $d i o x i d e$ .
Also, $S u l f u r i c$ acid acts as an oxidising agent as it releases nascent oxygen which acts as a oxidising agent.

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