An organic compound having molecular mass 60 is fond to contain C=20%, H=6.67% and N=46.67% while rest is oxygen. On heating it gives NH_(3) alongwith a solid residue. The solid residue gives violet colour with alkaline copper sulphate solution. the compound is

An organic compound having molecular mass 60 is fond to contain C=20%,

1.	An organic compound having molecular mass 60 is fond to contain C=20%, H=6.67% and N=46.67% while rest is oxygen. On heating it gives NH_(3) alongwith a solid residue. The solid residue gives violet colour with alkaline copper sulphate solution. the compound is
Answer» `CH_(3)NCO` `CH_(3)CONH_(2)` `(NH_(2))_(2)CO` `CH_(3)CH_(2)CONH_(2)` Solution :`{:("Element","Percentage","Mole","Mole RATIO"),(C,20,20//12=1.66,1),(H,6.67,6.67//1=6.67,4),(N,46.67,(46.67)/(14)=3.33,2),(O,26.66,26.6//16=1.66,1):}` Empirical FORMULA `=CH_(4)N_(2)O` Out of these urea on heating gives a solid residue called biuret which gives violet colour with alkaline `CuSO_(4)` solution. `underset("Urea")(NH_(2)CONH_(2)+H)NHCONH_(2) to underset("Biuret")(NH_(2)CONHCONH_(2))+NH_(3)`