sblock Elements 1 Question 33

33. Nitrogen dioxide cannot be obtained by heating

(1985, 1M)

(a) $\mathrm{KNO}_3$

(b) $\mathrm{Pb}\left(\mathrm{NO}_3\right)_2$

(c) $\mathrm{Cu}\left(\mathrm{NO}_3\right)_2$

(d) $\mathrm{AgNO}_3$

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Answer:

Correct Answer: 33. (a)

Solution: $\mathrm{KNO}_3$ and other nitrates of alkli metals (except $\mathrm{LiNO}_3$ ) are thermally stable.