13
MCQ (Single Correct Answer)
The correct increasing order of basic strength for the following compounds is .............. .
A
II < III < I
B
III < I < II
C
III < II < I
D
II < I < III
14
MCQ (Single Correct Answer)
Methylamine reacts with $\mathrm{HNO}_2$ to form ............. .
A
$\mathrm{CH}_3-\mathrm{O}-\mathrm{N}=\mathrm{O}$
B
$\mathrm{CH}_3-\mathrm{O}-\mathrm{CH}_3$
C
$\mathrm{CH}_3 \mathrm{OH}$
D
$\mathrm{CH}_3 \mathrm{CHO}$
15
MCQ (Single Correct Answer)
The gas evolved when methylamine reacts with nitrous acid is ........... .
A
$\mathrm{NH}_3$
B
$\mathrm{N}_2$
C
$\mathrm{H}_2$
D
$\mathrm{C}_2 \mathrm{H}_6$
16
MCQ (Single Correct Answer)
In the nitration of benzene using a mixture of conc. $\mathrm{H}_2 \mathrm{SO}_4$ and conc. $\mathrm{HNO}_3$, the species which initiates the reaction is ............. .
A
$\mathrm{NO}_2$
B
$\mathrm{NO}^{+}$
C
$\mathrm{NO}_2^{+}$
D
$\mathrm{NO}_2^{-}$
17
MCQ (Single Correct Answer)
Reduction of aromatic nitro compounds using Fe and HCl gives .............. .
A
aromatic oxime
B
aromatic hydrocarbon
C
aromatic primary amine
D
aromatic amide