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Sodium thiosulphate is prepared by...

Sodium thiosulphate is prepared by

A

reducing `Na_(2)SO_(4)` solution with `H_(2)S`.

B

boiling `Na_(2)SO_(3)` solution with S in alkaline medium.

C

neutralising `H_(2)S_(2)O_(3)` solution with NaOH.

D

boiling `Na_(2)SO_(3)` solution with S in acidic medium.

Text Solution

Verified by Experts

The correct Answer is:
B
`Na_(2)SO_(3)+S underset(" medium ")overset (" Inalkaline ")(to) Na_(2)S_(2)O_(3)`.
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DISHA PUBLICATION-THE P-BLOCK ELEMENTS (GROUP 15, 16, 17 & 18)-Exercise
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  2. A gas that cannot be collected over water is.

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  3. Sodium thiosulphate is prepared by

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  4. Which of the following is not oxidized by O(3)?

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  5. Which one of the following compounds is a peroxide?

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  6. Sulphur trioxide can be obtained by which of the following reactions:

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  7. Which of the following does not give oxygen on heating?

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  8. Acidity of diprotic acids in aqueous solutions increases in the order

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  9. In the reaction: 3Br(2)+6OH^(Theta)rarr 5Br^(Theta)+BrO(3)^(Theta)+3H...

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  10. In the case of alkali metals, the covalent character decreases in the ...

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  11. Potassium chlorate on heating with cone H2SO4 gives

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  12. In the manufacture of bromine from sea water the mother liquor contain...

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  13. Which of the following species has four lone..

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  14. Which one is the correct order of the size of the iodine species?

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  15. A one litre flask is full of brown bromine vapours. The intensity of b...

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  16. Which is the best description of the behaviour of bromine in the react...

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  17. Conc. HNO3 reacts with I2 to form:

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  18. For a given alcohol the order of reactivity of halogen acids is :

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  19. Iodine is a :

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  20. The correct order of increasing bond angles in the following species a...

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