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Reaction of Metals with Water or Steam

Which of the ...

Question

Which of the following metal( s) will produce $N O$ gas on reaction with $d i l . H N O_{3} (20 %)$ ?

A

C u

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B

A g

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C

Z n

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D

F e

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Solution

The correct options are
A $A g$
B $C u$
Option (A),(B) are correct.
$C u$ and $A g$ will produce $N O$ gas on reaction with $d i l . H N O_{3} (20 %)$ .
$3 C u + 8 H N O 3 ⟶ 3 C u (N O_{3})_{2} + 2 N O + 4 H_{2} O$

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Metal	$Z n S O_{4} (a q)$	$F e S O_{4} (a q)$	$C u S O_{4} (a q)$	$A l_{2} (S O_{4})_{3} (a q)$
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