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Which of the following is the green colo...

Which of the following is the green coloured powder produced when ammonium dichromate is used in fire works

A

`Cr `

B

`CrO_3`

C

`Cr_2O_3`

D

`CrO(O_2)`

Text Solution

Verified by Experts

The correct Answer is:
C
`(NH_4)_2Cr_2O_7 overset(Delta)to N_2 + Cr_2O_3 + 4H_2O`
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ERRORLESS-THE d-AND f- BLOCK ELEMENTS -NCERT BASED QUESTIONS (Compounds of Transitional Elements)
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  3. Which of the following is the green coloured powder produced when ammo...

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  4. In acidic medium, CrO(4)^(2-) changes to

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  5. When acidified K(2)Cr(2)O(7) solution is added to Sn^(2+) salts then S...

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  6. In the reduction of dichromate by Fe(II), the number of electrons invo...

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  7. The orange solid on heating gives a colourless gas and a greensolid wh...

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  8. The bonds present in the structure of dichromate ion are

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  9. The reddish brown gas produced by heating KCl with solid K2Cr2O7 and...

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  10. When H(2)O(2) is shaken with an acidified solution of K(2)Cr(2)O(7) in...

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  11. How is sodium chromate converted into sodium dichromate in the manufac...

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  13. Which of the following is formed when CO(2) gas is passed through an a...

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  14. Acidified solution of chromic acid on treatment with hydrogen peroxide...

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  16. The correct order of increasing oxidising power in the series is

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  19. Potassium permanganate acts as an oxidant in neutral, alkaline as well...

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  20. Which of the oxide of manganese is amohoteric

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