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On heating ammonium dichromate and barium azide separately we get

(i) N_{2}  in both cases

(ii) N_{2} with ammonium dichromate and NO with barium azide

(iii) N_{2}O with ammonium dichromate and  N_{2} with barium azide

(iv)  N_{2}O with ammonium dichromate and NO_{2} with barium azide

Answers (1)

The answer is the option (i)

\left ( NH_{4} \right )_{2}Cr_{2}O_{7}\rightarrow N_{2}+Cr_{2}O_{3}+4H_{2}O

                                                                            Ba \left ( N_{3} \right )_{2}\rightarrow 3N_{2}+Ba

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