Primary, secondary and tertiary nitroalkanes can be identifier by the action of:

1. ${\mathrm{HNO}}_2 + \mathrm{NaOH}\left(aq\right)$

2. ${\mathrm{CHCl}}_3 + \mathrm{NaOH} \left(aq\right)$

3. ${\mathrm{CHCl}}_3 + \mathrm{KOH}(\mathrm{alc}.)$

4. none of these

Considering the basic strength of amines in aqueous solution, which one has the least basic

1. $({\mathrm{CH}}_3{)}_2\mathrm{NH}$

2. ${\mathrm{CH}}_3{\mathrm{NH}}_2$

3. $({\mathrm{CH}}_3{)}_3\mathrm{N}$

4. ${\mathrm{C}}_6{\mathrm{H}}_5{\mathrm{NH}}_2$

What is the decreasing order of the basicity of $1°, 2° \mathrm{and} 3°$ ethyl amines and ammonia in aqueous medium is:

1. ${\mathrm{NH}}_3>{\mathrm{C}}_2{\mathrm{H}}_5{\mathrm{NH}}_2>({\mathrm{C}}_2{\mathrm{H}}_5{)}_2\mathrm{NH}>({\mathrm{C}}_2{\mathrm{H}}_5{)}_3\mathrm{N}$

2. $({\mathrm{C}}_2{\mathrm{H}}_5{)}_3\mathrm{N}>({\mathrm{C}}_2{\mathrm{H}}_5{)}_2\mathrm{NH}>{\mathrm{C}}_2{\mathrm{H}}_5{\mathrm{NH}}_2>{\mathrm{NH}}_3$

3. $({\mathrm{C}}_2{\mathrm{H}}_5{)}_2\mathrm{NH}>{\mathrm{C}}_2{\mathrm{H}}_5{\mathrm{NH}}_2>({\mathrm{C}}_2{\mathrm{H}}_5{)}_3\mathrm{N}>{\mathrm{NH}}_3$

4. $({\mathrm{C}}_2{\mathrm{H}}_5{)}_2\mathrm{NH}>({\mathrm{C}}_2{\mathrm{H}}_5{)}_3\mathrm{N}>{\mathrm{C}}_2{\mathrm{H}}_5{\mathrm{NH}}_2>{\mathrm{NH}}_3$

On hydrolysis, what do primary nitroalkanes give?

1. RCOOH + NH₂OH

2. RCOOH

3. NH₂OH

4. RCOR

Primary, Secondary and tertiary amines may be separated by using-

1. Ethanoyl chloride

2. Diethyl oxalate

3. Thionyl chloride

4. None of the above

The product B in the below mentioned reaction is:
\(Acetamide \overset{P_2O_5}{\longrightarrow}A\ \overset{4H}{\longrightarrow}\ B\)

1. CH₃NH₂                              

2. C₂H₅NH₂

3. CH₃CN                                   

4. CH₃COONH₄

The final product C, obtained in this reaction

$\stackrel{{\mathrm{Ac}}_2\mathrm{O}}{\to }$A$\underset{{\mathrm{CH}}_2\mathrm{COOH}}{\overset{{\mathrm{Br}}_2}{\to }}$B$\underset{{\mathrm{H}}^{+}}{\overset{{\mathrm{H}}_2\mathrm{O}}{\to }}$C

would be

1.                  

2.  

3.                  

4.  

Intermediates formed during the reaction of RCONH₂ with Br₂ and KOH are                                

1. RCONHBr and RNCO

2. RNHCOBr and RNCO

3. RNHBr and RCONHBr

4. RCONBr₂

Z in the below reaction sequence will be:
\(CH_3CH_2Cl \)\(\xrightarrow[]{NaCN}\ X\ \)\(\xrightarrow[]{Ni/H_2}\ Y \ \)\(\xrightarrow{Ac_2O}\ Z\)
1. \(\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CH}_2 \mathrm{NHCOCH}_3 \)
2. \(\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CH}_2 \mathrm{NH}_2 \)
3. \(\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CH}_2 \mathrm{CONHCH}_3 \)
4. \(\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CH}_2 \mathrm{CONHCOCH}_3\)

An organic compound A on reduction gives compound B which on reaction with chloroform and potassium hydroxide forms C. The compound C on catalytic reduction gives N-methylaniline. The compound A is                                                               

1. Nitrobenzene

2. Nitromethane

3. Methylamine

4. Aniline