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In the formation of SO(3) by contact pro...

In the formation of `SO_(3)` by contact process, the conditions used are

A

Catalyst, adding excess of `O_(2)` to `SO_(2) ` at `450^(@)`C and 2 atm

B

Catalyst, adding excess of `SO_(2)` to `H_(2)SO_(4)` at `100^(@)C` and 20 atm

C

Catalyst, adding excess of `SO_(2)` to traces of `O_(2)` at `20^(@)C` and 1 atm

D

Catalyst, adding excess of `H_(2)SO_(4)` to `O_(2)` at `30^(@)C` and 30 atm

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The correct Answer is:
A
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