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Which of the following statements are co...

Which of the following statements are correct ?

A

S-S bond is present in `H_(2)S_(2)O_(6)`.

B

In peroxosulphuric acid `(H_(2)SO_(6))` sulphur is in `+6` oxidation state.

C

Iron powder along with `Al_(2)O_(3) " and " K_(2)O` is used as a catalyst in the preparation of `NH_(3)` by Haber's process.

D

Change in enthalpy is positive for the preparation of `SO_(3)` by catalytic oxidation of `SO_(2)`.

Text Solution

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The correct Answer is:
A, B
are both correct statements.
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