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Which one of the following reactions will give NO (nitric oxide) gas as one of the products?

Options

  1. A3 Cu +8 HNO ₃ (dilute)
  2. BCu +4 HNO ₃ (conc.)
  3. C4 Zn +10 HNO ₃ (dilute)
  4. DZn +4 HNO ₃ (conc.)

Correct answer

A. 3 Cu +8 HNO ₃ (dilute)

Step-by-step solution

Dilute nitric acid reacts with copper to release nitric oxide. array rl 3 Cu ( ~s )+8 HNO ₃( aq ) 3 & Cu ( NO ₃ )₂( aq ) + & 2 NO ( ~g )+4 H ₂ O ( l ) array

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