Question

Ammonium dichromate is used in some fire works. The green coloured powder blown in the air is

• A. CrO3
• B. Cr2O3
• C. Cr
• D. CrO (O2)

Answer 1

Answer: (B)

Cr2O3

Answer 2

(NH4)2Cr2O7 $\longrightarrow$ N2 + Cr2O3 + 4 H2O.

Green coloured powder blown in air is Cr2O3