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Question

Nitric acid (HNO3), also known as aqua fortis (Latin for "strong water") or spirit of niter, is a highly corrosive mineral acid. Nitric acid reacts with most metals, but the details depend on the concentration of the acid and the nature of the metal.

List-I contains chemical reactions of metals with HNO3 and List-II contains the compound(s) formed.

ListIListII(I)Ca with dilute and cold HNO3(P)Metal nitrate(II)As with concentrated HNO3(Q)NO(III)Zn with dilute HNO3(R)NO2(IV)Cu with dilute HNO3(S)N2O(T)Tribasic acid(U)Hydrogen gas

Which of the following options has the correct combination considering List-I and List-II?

A
(I),(P)(S) and (II),(P)(Q)
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B
(II),(R)(T) and (I),(P)(U)
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C
(I),(P)(R) and (II),(P)(U)
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D
(I),(S)(U) and (II),(Q)(T)
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Solution

The correct option is B (II),(R)(T) and (I),(P)(U)
The reactions are
(I) Ca+2HNO3Ca(NO3)2+H2
(II) As+5HNO3H3AsO4+5NO2+H2O

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