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Ammonium dichromate is used in some fire...

Ammonium dichromate is used in some fireworks. The green-coloured powder blown in the air is

A

`CrO_(3)`

B

`Cr_(2)O_(3)`

C

`Cr`

D

`CrO(O_(2))`

Text Solution

Verified by Experts

The correct Answer is:
B
`(NH_(4))_(2)Cr_(2)O_(7)toN_(2)+Cr_(2)O_(3)+4H_(2)O`.
Green coloured powder blown in air is `Cr_(2)O_(3)`.
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RESONANCE-D BLOCK ELEMENTS-EXERCISE-2 PART-II
  1. When H(2)O(2) is added to an acidified solution of K(2)Cr(2)O(7):

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  2. The number of moles of KMn(4) that will be needed to react with one mo...

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  3. Ammonium dichromate is used in some fireworks. The green-coloured powd...

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  4. The number of moles of KMnO(4) that will be needed to react completely...

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  7. Which of the following statement(s) is/are correct?

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  8. Following reaction (s) is /are involved in the iodometric estimation

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  9. The colour of the transition metal ions is//are due to:

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  10. Which of the following statement(s) is/are not correct.

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  11. Select correct statement(s).

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  16. Which of the following reaction(s) is /are used for the preparation of...

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  17. Which of the following is//are false?

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  18. Which of the following chemical reaction(s) is//are involved in develo...

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  19. Pyrolusite is MnO(2) used to prepare KMnO(4) step are: MnO(2)underset...

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  20. Which are correct statement?

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