When copper is heated with $c o n c . H N O_{3}$ it produces :

C u (N O_{3})_{2}

and

N O_{2}

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C u (N O_{3})_{2}

and

N O

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C u (N O_{3})_{2}, N O

and

N O_{2}

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C u (N O_{3})_{2}

and

N_{2} O

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Solution

The correct option is A $C u (N O_{3})_{2}$ and $N O_{2}$
When copper is heated with conc. $H N O_{3}$ it produces cupric nitrate $C u (N O_{3})_{2}$ and nitrogen dioxide $N O_{2}$ .

$C u + 4 H N O_{3} \to C u (N O_{3})_{2} + 2 N O_{2} + 2 H_{2} O$

Hence, option $A$ is correct.

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Q. When copper is heated with conc.

H N O_{3}

it produces

Match each of the reactions given in Column - I with the corresponding product(s) given in Column - II:
$\begin{matrix} C o l u m n - I & C o l u m n - I I (a) C u + d i l . H N O_{3} & (p) N O (b) C u + c o n c . H N O_{3} & (q) N O_{2} (c) Z n + d i l . H N O_{3} & (r) N_{2} O (d) Z n + c o n c . H N O_{3} & (s) C u (N O_{3})_{2} (t) Z n (N O_{3})_{2} \end{matrix}$