Preparation of dinitrogen

This type of question, asked 2 times: 27 Jun 2022, 28 Jun 2022. All 2 questions below, oldest first.

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Question 1
27 Jun 2022
126 $The gas produced by treating an aqueous solution of ammonium chloride with sodium nitrite is$
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Question 2
28 Jun 2022
36 $Nitrogen gas is obtained by thermal decomposition of$
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