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A solution of sulphur dioxide in water r...

A solution of sulphur dioxide in water reacts with `H_(2)S` precipitating sulphur. Here sulphur dioxide acts as

A

an oxidising agent

B

a reducing agent

C

an acid

D

a catalyst

Text Solution

Verified by Experts

The correct Answer is:
B
A solution of `SO_2` in water reacts with `H_2S ` precipitation sulphur. Here, `SO_2` act as reducing agent.
`underset("+2)(SO_2) + 2H_2 underset(-2)(S) to 2H_2 O + overset(0)S`
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  2. In the laboratory, SO2 is prepared by

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

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  7. Sulphur dioxide reacts with PCl5 to give

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

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

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  10. SO2 will be obtained from the following

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  11. SO2 is not a

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

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  13. Which reduction shows the oxidising nature of SO2?

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  14. In the presence of moisture SO2

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  15. The bleaching by SO2 is temporary because

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

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  17. Which of the following gases produces maximum pollution?

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  18. Pure H2 S gas is obtained by action of water on

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  19. By passing H(2)S in acidified KMnO(4) solution we get

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  20. H2 S is far more volatile than water because

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