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How can you synthesise nitric oxide in the lab 

(A)  Zinc with cold and dilute HNO3 

(B)  Zinc with Conc. HNO3 

(C)  Cu with cold and dil HNO3 

(D)  Heating NH4 NO3

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Best answer

Correct option (C) Cu with cold and dil HNO3

Explanation:

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