Question

$(N{H}_4{)}_{2}C{r}_2{O}_7$ (Ammonium dichromate) is used in fire works. The green coloured powder blown in air is :

• A. $C{r}_2{O}_3$
• B. $Cr{O}_2$
• C. $C{r}_2{O}_4$
• D. $Cr{O}_3$

Answer 1

The correct option is A $C{r}_2{O}_3$

$(N{H}_4{)}_{2}C{r}_2{O}_7\to N_2+4H_{2}O+C{r}_2{O}_3$

$C{r}_2{O}_3$ is green coloured powder in air.