Match each of the reactions given in List 1 with the corresponding product(s) given in List 2.

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Solution

Copper reacts with dil nitric acid to form cupric nitrate and NO.
$3 C u +$ dil. $8 H N O_{3} \to 3 C u (N O_{3})_{2} + 4 H_{2} O + 2 N O$

Copper reacts with conce nitric acid to form cupric nitrate and nitrogen dioxide.
$C u +$ conc. $4 H N O_{3} \to C u (N O_{3})_{2} + 2 H_{2} O + 2 N O_{2}$

Zinc reacts with dil nitric acid to form zinc nirate and dinitrogen monoxide.
$4 Z n +$ dil. $10 H N O_{3} \to 4 Z n (N O_{3})_{2} + 5 H_{2} O + N_{2} O$

Zinc reacts with concentric nitric acid to form zinc nitrate and nitrogen dioxide.
$Z n + c o n c . 4 H N O_{3} \to Z n (N O_{3})_{2} + 2 H_{2} O + 2 N O_{2}$

Hence, the correct match is: $A \to 1, 4$ , $B \to 2, 4$ , $C \to 3, 5$ and $D \to 2, 5$ .

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