D-And F-Block Elements Ques 92
Question: Which of the followign is the green coloured powder produced when ammonium dichromate is used in fire works
[J & K 2005]
Options:
A) $ Cr $
B) $ CrO_3 $
C) $ Cr_2O_3 $
D) $ CrO(O_2) $
Show Answer
Answer:
Correct Answer: C
Solution:
$ {{(NH_4)}_2}Cr_2O_7\xrightarrow{\Delta }2K_2CrO_4+Cr_2O_3+\frac{3}{2}O_2 $
