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Question

NO2 can not be obtained by heating:
  1. KNO3
  2. Hg(NO3)2
  3. Pb(NO3)2
  4. Cu(NO3)2

A
KNO3
B
Pb(NO3)2
C
Cu(NO3)2
D
Hg(NO3)2
Solution
Verified by Toppr

Alkali metal nitrates, except lithium, decompose upon strong heating to give oxygen gas and a metal nitrite.

2KNO3KNO2+O2

NO2 is not obtained in above reaction.

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