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The gases used in the spark-discharge ap...

The gases used in the spark-discharge apparatus were -

A

`NH_3, NH_4` and `O_2`

B

`O_2, CO_2` and `NH_3`

C

`CO_2, NH_3` and `CH_4`

D

`H_2,CH_4` and `NH_3`

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The correct Answer is:
D
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