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The bleaching action of sulphur dioxide ...

The bleaching action of sulphur dioxide is due to

A

oxidation

B

evaporation

C

substitution

D

reduction

Text Solution

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The correct Answer is:
D
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BHARATI BHAWAN (ENGLISH)-PRACTICALS -EXERCISE
  1. A colourless gas produces irritation in lungs when inhaled and gives t...

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  2. Mohr's salt is

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  3. The bleaching action of sulphur dioxide is due to

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  4. Sulphur dioxide is not recognized by

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  5. The products formed when sodium sulphite is made to react with dilute ...

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  6. When SO(2) gas is passed through an acidified solution of K(2)Cr(2)O(7...

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  7. Name the substance which is used to prepare blue-black ink

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  8. Sulphur dioxide gas is dried by passing through concentrated H(2)SO(4)...

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  9. Sulphur dioxide gas should not be inhaled directly because

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  10. When a flower bleached by sulphur dioxide is brought in contact with a...

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  11. When SO(2) gas is allowed to react with acidified potassium dichroma...

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  12. Metals that lie above hydrogen in the actively series are know as

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  13. In the reaction Mg + CuSO(4) to MgSO(4) + Cu, Mg acts as

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  14. Iron displaces copper from copper sulphate solution because

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  15. When a piece of iron is placed in a solution of copper sulphate, the b...

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  16. A reddish-brown metal which lies below hydrogen in the activity series...

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  17. Metallic zinc displaces hydrogen from dilute acids and water because

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  18. The metal which can react both with acids and alkalis to produce hydro...

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  19. When zinc powder is heated with sodium hydroxide solution , the substa...

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  20. When a piece of zinc is added to blue copper sulphate solution, the so...

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