MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Inorganic Chemistryp -Block Elements (group 15-18)Chemical Properties of Group 15 Elements
Small quantities of very pure N2 is obtained by carefully warming
A.sodium azide (NaN3)
B.a mixture of CuO and NH3
C.a mixture of NH3 and Br2
D.a mixture of Zn, NaNO3 and NaOH
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