Question

82. An organic compound, C3H60 does not give
a precipitate with 2,4-dinitrophenylhydrazine
reagent and does not react with metallic
sodium. It could be
(A) CH3-CH2–CHO
(B) CH2=CH-CH2OH
(C) CH3-CO-CH3
(D) CH2=CH-0--CH3
(I.I.T. Screening 1993)​

Answer 1

Answer:

An organic compound, C3H6O does not give a precipitate with 2, 4 dinitrophenyl-hydrazine reagent and does not react with metallic sodium. It could be

(a) CH3 –CH2 –CHO

(b) CH2 =CH–CH2OH

(c) CH3 –CO–CH3

(d) CH2 =CH–O–CH3

Explanation:

Correct option: (d) CH2 =CH–O–CH3

Explanation:

Negative reaction with 2, 4- dinitrophenylhydrazine indicates absence of aldehydic (option a ) and ketonic (option c) group, while negative reaction with metallic sodium indicates absence of an alcoholic group (option b), hence the organic compound, C3H6O is CH2 = CHOCH3 (option d).

Answer 2

Answer:

have this buddy......by the way d.is right may be