Aniline with CHCl₃ and KOH on heating gives :

• isocyanide

• cyanide

• phenol

• salicylic acid

52.

Most acidic is :

• 

• 

• 

• 

Z $\stackrel{\mathrm{PCl}}{\to }$ X $\stackrel{\mathrm{alc}. \mathrm{KOH}}{\to }$ Y $\stackrel{\mathrm{conc}. {\mathrm{H}}_2{\mathrm{SO}}_4}{\to }$ Z

Here Z is :

• CH₃-CH₂-CH₂-OH

• (CH₃)₂-C-OH

• CH₃-CH(OH)-CH₃

• none of above

Compound reacting with alkaline KMnO₄ :

• (CH₃)₃-C-OH

• (CH₃)₂-CH-OH

• (CH₃)₃-C-CH₂OH

• none of the above

Lucas reagent reacts fastest with :

• butanol - 1

• butanol - 2

• 2 - methyl - propanol - 2

• 2 - methyl - propanol - 1

SN² mechanism is involed in the following substitution :

• CH₃-CH₂-Cl + OH^-

• (CH₃)₂-C(Cl)-CH₃-OH^-

• (CH₃)₂-C-Cl + OH^-

• CH₃-CH₂-(CH₃)C(Cl)-CH₃ + OH^-

Phenol and benzoic acid may be distinguished by :

• NaHCO₃

• NaOH

• Na

• PCl₅

Correct order of basic nature is :

• NH₃ > CH₃NH₂ > C₆H₅NH₂

• C₆H₅NH₂ > NH₃ > CH₃NH₂

• CH₃NH₂ > NH₃ > C₆H₅NH₂

• none of the above

HCHO reacts with NH₃ togive :

• urotropine

• bakelite

• teryline

• gylaptal

Arrange the hydra - acids of halogens in increasing order of acidity .

• HF < HCl < HBr < HI

• HI < HBr < HCl < HF

• HF < HBr < HI <HCl

• HF < HI < HBr < HCl