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 $



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