A) \[C{{H}_{3}}Cl\]
B) \[CC{{l}_{4}}\]
C) \[CHC{{l}_{3}}\]
D) \[{{C}_{2}}{{H}_{5}}Cl\]
Correct Answer: C
Solution :
Carbyl amine test: This reaction is given by primary amines only. In this reaction \[{{\text{1}}^{\text{o}}}-\]amine reacts with chloroform and KOH to form isocyanides. which is a bad smelling compound. \[\text{78}\,\text{g}\,{{\text{C}}_{\text{6}}}{{\text{H}}_{\text{6}}}\]contains \[C=72\] \[\text{100}\,\text{g}\,{{\text{C}}_{\text{6}}}{{\text{H}}_{\text{6}}}\]contains \[\text{C =}\frac{72}{78}\times 100=\frac{7200}{78}\] \[=92.3%\] \[78\,g\,{{C}_{6}}{{H}_{6}}\]contains \[H=6\] \[\text{100}\,\text{g}\,{{\text{C}}_{\text{6}}}{{\text{H}}_{\text{6}}}\]contains \[\text{C =}\frac{6}{78}\times 100=\frac{600}{78}\] \[=7.69%\] The answer is \[{{\text{C}}_{\text{2}}}{{\text{H}}_{\text{6}}}\]containing 80% carbon and 20% hydrogen.
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