A) Hydrogen
B) Ammonia
C) Oxygen
D) Nitrogen
Correct Answer: D
Solution :
Ammonium dichromate gives off nitrogen gas, on heating. \[{{(N{{H}_{4}})}_{2}}C{{r}_{2}}{{O}_{7}}\xrightarrow{\Delta }C{{r}_{2}}{{O}_{3}}+4{{H}_{2}}O+{{N}_{2}}\uparrow \]
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