33
MCQ (Single Correct Answer)
Which is the correct increasing order of boiling points of the following compounds?
1-bromoethane, 1-bromopropane, 1-bromobutane, Bromobenzene
A
Bromobenzene $<1$-bromobutane $<1$-bromopropane $<1$-bromoethane
B
Bromobenzene $<1$-bromoethane $<1$-bromopropane $<1$-bromobutane
C
1-bromopropane $<1$-bromobutane $<1$-bromoethane $<$ Bromobenzene
D
1-bromoethane $<1$-bromopropane $<1$-bromobutane $<$ Bromobenzene
34
MCQ (Multiple Correct Answer)
Which of the statements are correct about above reaction?
A
(i) and (v) both are nucleophiles
B
In (iii) carbon atom is $s p^3$ hybridised
C
In (iii) carbon atom is $s p^2$ hybridised
D
(i) and (v) both are electrophiles
35
MCQ (Multiple Correct Answer)
Which of the following statements are correct about this reaction?
A
The given reaction follows $\mathrm{S}_{\mathrm{N}} 2$ mechanism
B
(ii) and (iv) have opposite configuration
C
(ii) and (iv) have same configuration
D
The given reaction follows $\mathrm{S}_{\mathrm{N}} 1$ mechanism
36
MCQ (Multiple Correct Answer)
Which of the following statements are correct about the reaction intermediate?
A
Intermediate (iii) is unstable because in this carbon is attached to 5 atoms
B
Intermediate (iii) is unstable because carbon atom is $s p^2$ hybridised
C
Intermediate (iii) is stable because carbon atom is $s p^2$ hybridised
D
Intermediate (iii) is less stable than the reactant (ii)
37
MCQ (Multiple Correct Answer)
Which of the following statements are correct about the mechanism of this reaction?
A
A carbocation will be formed as an intermediate in the reaction
B
$\mathrm{OH}^{-}$will attach the substrate (ii) from one side and $\mathrm{Cl}^{-}$will leave it simultaneously from other side
C
An unstable intermediate will be formed in which $\mathrm{OH}^{-}$and $\mathrm{Cl}^{-}$will be attached by weak bonds
D
Reaction proceeds through $\mathrm{S}_{\mathrm{N}} 1$ mechanism