Q. Match the compounds given in List-I with their characteristic reactions given in List-II. Select the correct option. [table] List-I | List-II ; a. CH₃CH₂CH₂CH₂NH₂ | (i) Alkaline hydrolysis ; b. CH₃C≡CH | (ii) With KOH (alcohol) and CHCl₃ produces bad smell ; c. CH₃CH₂COOCH₃ | (iii) Gives white ppt. with ammoniacal AgNO₃ ; d. CH₃CH(OH)CH₃ | (iv) With Lucas reagent cloudiness appears after 5 minutes [/table]
A) a(ii), b(i), c(iv), d(iii)
B) a(iii), b(ii), c(i), d(iv)
C) a(ii), b(iii), c(i), d(iv)
D) a(iv), b(ii), c(iii), d(i)
Explanation
[Solution from source] n-Butylamine, a primary amine, gives the foul-smelling isocyanide with CHCl₃/alcoholic KOH; propyne, a terminal alkyne, gives a white precipitate with ammoniacal AgNO₃; the ester undergoes alkaline hydrolysis; 2-propanol, a secondary alcohol, turns cloudy with Lucas reagent in about 5 minutes. So a(ii), b(iii), c(i), d(iv). Assigning the silver test to the amine misses that only terminal alkynes have an acidic H. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.