S Block Elements Question 15

Question: Nitrogen is liberated by the thermal decomposition of only

[IIT 1991]

Options:

A) $ NH_4NO_2 $

B) $ NaN_3 $

C) $ {{(NH_4)}_2}Cr_2O_7 $

D) All the three

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Answer:

Correct Answer: D

Solution:

$ NH_4NO_2\to N_2+2H_2O $

$ 2NaN_3\to 2Na+3N_2 $

$ {{(NH_4)}_2}Cr_2O_7\to N_2+Cr_2O_3+4H_2O $