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(NH(4))(2)Cr(2)O(7) (ammonium dichromate...

`(NH_(4))_(2)Cr_(2)O_(7)` (ammonium dichromate) is used in fire works. The green coloured powder blown in air is:

A

`Cr_(2)O_(3)`

B

`CrO_(2)`

C

`Cr_(2)O_(4)`

D

`CrO_(3)`

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The correct Answer is:
A
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