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Q.

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 NH3 along with a solid residue. The solid residue give violet color with alkaline copper sulphate solution. the compound is

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a

CH3NCO

b

CH3CONH2

c

NH22CO

d

CH3CH2CONH2

answer is C.

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Detailed Solution

% C = 20 %, H = 6.67 %, N = 46.67 %

% of oxygen = 100 − (20 + 6.67 + 46.67) 

= 26.66 %

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