Transition and InnerTransition Elements - Result Question 136
####36. Ammonium dichromate is used in some fireworks. The green coloured powder blown in the air is
(1997, 1M)
(a) $CrO _3$
(b) $Cr _2 O _3$
(c) $Cr$
(d) $CO$
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Solution:
- Ammonium dichromate $\left[\left(NH _4\right) _2 Cr _2 O _7\right]$ on heating decomposes producing green powder of $Cr _2 O _3$ and $N _2(g)$ is evolved.
