1
KCET 2019
MCQ (Single Correct Answer)
+1
-0

If aniline is treated with $$1: 1$$ mixture of conc. $$\mathrm{HNO}_3$$ and conc. $$\mathrm{H}_2 \mathrm{SO}_4$$, p-nitroaniline and $$m$$-nitroaniline are formed nearly in equal amounts. This is due to

A
$$m$$-directing property of $$-\mathrm{NH}_2$$ group
B
protonation of $$-\mathrm{NH}_2$$ which causes deactivation of benzene ring
C
$$m$$ and $$p$$ directing property of $$-\mathrm{NH}_2$$ group
D
isomerisation of some $$p$$-nitroaniline into $$m$$-nitroaniline
2
KCET 2018
MCQ (Single Correct Answer)
+1
-0
During the fusion of organic compound with sodium metal, nitrogen present in the organic compound is converted into
A
$\mathrm{NaNO}_2$
B
$\mathrm{NaNH}_2$
C
NaCN
D
NaNC
3
KCET 2018
MCQ (Single Correct Answer)
+1
-0
Which of the following will be the most stable diazonium salt $\left(R \mathrm{~N}_2^{+} \mathrm{X}^{-}\right)$?
A
$\mathrm{CH}_3 \mathrm{~N}_2^{+} \mathrm{X}^{-}$
B
$\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{~N}_2^{+} \mathrm{X}^{-}$
C
$\mathrm{C}_6 \mathrm{H}_5 \mathrm{~N}_2^{+} X^{-}$
D
$\mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}_2 \mathrm{~N}_2^{+} \mathrm{X}^{-}$
4
KCET 2018
MCQ (Single Correct Answer)
+1
-0
The reaction of benzenediazonium chloride with aniline yields yellow dye. The name of the yellow dye is
A
$p$-hydroxya: henzene
B
$p$-aminoazoLanzene
C
$p$-nitroazobenzene
D
o-nitroazobenzene
KCET Subjects
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