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When SO(2) is passed through acidic solu...

When `SO_(2)` is passed through acidic solution of potassium dichromate, then chromium sulphate is formed. Change in valency of chronium is

A

`+4 ` to +2

B

`+5` to +3

C

`+6` to +3

D

`+7` to +2

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The correct Answer is:
C
When `SO_2` is passed through acidified solution of potassium dichromate, then chromium sulphate is formed, the change in valency of chromium is + 6 to + 3
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  1. A gas that cannot be collected over water is.

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  2. By passing SO2 in the solution of K2 Cr2 O7, it turns green due to

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  3. When SO(2) is passed through acidic solution of potassium dichromate, ...

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  4. Bleaching action of SO2 is due to

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  5. In the laboratory, SO2 is prepared by

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  6. A solution of sulphur dioxide in water reacts with H(2)S precipitating...

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  7. Which is the correct statement?

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  8. The reaction between copper and hot concentrated sulphuric acid produc...

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  9. When SO2 is passed through the acidic solution of K2 Cr2 O7

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  10. Sulphur dioxide reacts with PCl5 to give

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  11. When SO2 is passed through aqueous H2 S sulphur is precipitated. In th...

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  12. A substance on treatment with dil. H2 SO4 liberates a colourless gas w...

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  13. SO2 will be obtained from the following

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  14. SO2 is not a

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  15. One gas bleaches flowers by reduction and the other gas by oxidation. ...

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  16. Which reduction shows the oxidising nature of SO2?

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  17. In the presence of moisture SO2

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  18. The bleaching by SO2 is temporary because

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  19. When moist coloured flowers are added into a gas of SO2 the flowers ar...

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  20. Which of the following gases produces maximum pollution?

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