MCQ
How can you synthesise nitric oxide in the laboratory?
  • A
    Zinc with cold and dilute $HNO_3$
  • B
    $Zn$ with conc. $HNO_3$
  • Copper with cold and dilute $HNO_3$
  • D
    Heating $NH_4NO_3$

Answer

Correct option: C.
Copper with cold and dilute $HNO_3$
c
Copper reacts with cold and dilute nitric acid to produce copper nitrate, water and nitric oxide.

$Cu +\text { cold } HNO _3 \rightarrow 3 Cu \left( NO _3\right)_2+4 H _2 O +2 NO$

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