The decreasing order of basic characters of the three amines and ammonia is

• NH₃ > CH₃NH₂ > C₂H₅NH₂ > C₆H₅NH₂

• C₂H₅NH₂ > CH₃NH₂ > NH₃ > C₆H₅NH₂

• C₆H₅NH₂ > C₂H₅NH₂ > CH₃NH₂ > NH₃ 

• CH₃NH₂ > C₂H₅NH₂ > C₆H₅NH₂ > NH₃ 

Benzene diazonium chloride on treatment with hypo phosphorus acid and water in presence of Cu⁺ catalyst produce

• benzene

• toluene

• aniline

• chlorobenzene

483.

Which of the following reagents will be fruitful for separating a mixture of nitrobenzene and aniline?

• aq. NaHCO₃

• H₂O

• aq. HCl

• aq. NaOH

Protein gives blue colour with

• Benedict reagent

• iodine solution

• ninhydrin

• biurete

A mixture of ethyl amine and alcoholic KOH on heating gives

• alkyl cyanide

• ethyl cyanate

• ethyl isocyanide

• ethyl isocyanate

Isopropyl amine with excess of acetyl chloride will give

• $({\mathrm{CH}}_3\mathrm{CO}{)}_2\mathrm{N}-\mathrm{CH}-({\mathrm{CH}}_3{)}_2$

• $({\mathrm{CH}}_3{)}_2\mathrm{CH}-\mathrm{N}(\mathrm{H})-{\mathrm{COCH}}_3$

• $\left({\mathrm{CH}}_3{)}_2\mathrm{CHN}\right({\mathrm{COCH}}_3{)}_2$

• ${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2-\mathrm{N}\left(\mathrm{H}\right)-{\mathrm{COCH}}_3$

Glucose molecule reacts with 'X' number of molecules of phenylhydrazine to yield osazone. The value of 'X' is

• four

• one

• two

• three

In the following reaction sequence, the compound C is

Ethyl amine $\stackrel{{\mathrm{HNO}}_2}{\to }$ A $\stackrel{{\mathrm{PCl}}_5}{\to }$ B $\stackrel{{\mathrm{NH}}_3}{\to }$ C 

• CH₃NH₂

• C₂H₅NH₂

• CH₃CH=NH

• (CH₃)₂NH

When acetamide is treated with Br₂ and caustic soda, the product formed is

• N-bromamide

• bromoacetic acid

• methanamine

• ethanamine

On heating benzyl amine with chloroform and ethanolic KOH, product obtained is

• benzyl alcohol

• benzaldehyde

• benzonitrile

• benzyl isocyanide