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On heating NaX with H(2)SO(4) and MnO(2)...

On heating `NaX` with `H_(2)SO_(4)` and `MnO_(2)` the halogen that cannot be prepared is

A

`I_(2)`

B

`F_2`

C

`Cl_(2)`

D

`Br_(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
`2NaX+H_(2)SO_(4) overset(Delta)to Na_(2)SO_(4_)+2HX`
`MnO_(2)+4HX to MaX_(2)+X_(2)(g)+2H_(2)O`
`MnO_(2)` can oxidize HCl, and HI and not HF. Hence `F_(2)` cannot be greated by this method.
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NIKITA PUBLICATION-P-BLOCK ELEMENT -Competitive Exam
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  3. Each of the following is true for white and red phosphorus except that...

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  4. Which of the following is not known

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  5. Which one of the following elements is most metallic?

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  6. Which of the following oxides of nitrogen is the anhydride of HNO(3)?

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  7. Dissociatuion of H(3)PO(4) occurs in following stages

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  8. Nitrogen forms how many oxides

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  9. The element which catches fire in air at 30^@C and is stored under wat...

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  10. A solution of ammonia in water contains

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  11. Which of the following is oxidised in air?

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  12. Which of the following exist in polymeric form ?

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  13. Which nitrogen trihalides is least basic

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  14. Which of the following oxide of nitrogen is a coloured gas?

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  15. Which oxide does not act as a reducing agent?

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  18. Which has the lowest boiling point?

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