Nitrogen dioxide is not produced on heating:

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Question

(A) Only $KNO_{3}$ on heating does not produce $NO_{2}$. The thermal decomposition reactions are as follows:$(a)$ $2 KNO_{3} \xrightarrow{\Delta} 2 KN

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$KNO_{3}$

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(A) Only $KNO_{3}$ on heating does not produce $NO_{2}$. The thermal decomposition reactions are as follows:$(a)$ $2 KNO_{3} \xrightarrow{\Delta} 2 KNO_{2} + O_{2}$$(b)$ $2 Pb(NO_{3})_{2} \xrightarrow{\Delta} 2 PbO + 4 NO_{2} + O_{2}$$(c)$ $2 Cu(NO_{3})_{2} \xrightarrow{\Delta} 2 CuO + 4 NO_{2} + O_{2}$$(d)$ $2 AgNO_{3} \xrightarrow{\Delta} 2 Ag + 2 NO_{2} + O_{2}$Alkali metal nitrates (like $KNO_{3}$) decompose to form nitrites and oxygen, whereas heavy metal nitrates decompose to form metal oxides (or metal), nitrogen dioxide, and oxygen.

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