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An organic compound having molecular mas...

An organic compound having molecular mass 60 is found to contain `C=20%, H=6.67% and N=46.6% while rest is oxygen. On heating it gives `NH_3` along with a solid residue. The solid residue give violet colour with alkaline copper sulphate solution. The compound is

A

`CH_3CH_2CONH_2`

B

`(NH_2)_2CO`

C

`CH_3CONH_2`

D

`CH_3NCO`

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The correct Answer is:
B
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