4
MCQ (Single Correct Answer)
Toluene reacts with a halogen in the presence of iron (III) chloride giving ortho and para halo compounds. The reaction is
A
electrophilic elimination reaction
B
electrophilic substitution reaction
C
free radical addition reaction
D
nucleophilic substitution reaction
5
MCQ (Single Correct Answer)
Which of the following is halogen exchange reaction?
A
$RX+NaI \to RI + NaX$
B
C
D
6
MCQ (Single Correct Answer)
Which reagent will you use for the following reaction?
$$\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CH}_2 \mathrm{CH}_3 \longrightarrow \mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CH}_2 \mathrm{CH}_2 \mathrm{Cl}+\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CHClCH}_3$$
A
$\mathrm{Cl}_2 / U V$ light
B
$\mathrm{NaCl}+\mathrm{H}_2 \mathrm{SO}_4$
C
$\mathrm{Cl}_2$ gas in dark
D
$\mathrm{Cl}_2$ gas in the presence of iron in dark
7
MCQ (Single Correct Answer)
Arrange the following compounds in the increasing order of their densities.
A
(i) < (ii) < (iii) < (iv)
B
(i) < (iii) < (iv) < (ii)
C
(iv) < (iii) < (ii) < (i)
D
(ii) < (iv) < (iii) < (i)
8
MCQ (Single Correct Answer)
Arrange the following compounds in increasing order of their boiling points.
(i) 
(ii) $\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CH}_2 \mathrm{CH}_2 \mathrm{Br}$
(iii) 
A
(ii) < (i) < (iii)
B
(i) < (ii) < (iii)
C
(iii) < (i) < (ii)
D
(iii) < (ii) < (i)