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In the given reaction ;
${\mathrm{C}}_6{\mathrm{H}}_5{\mathrm{N}}_2\mathrm{Cl}\stackrel{\mathrm{HF}/{\mathrm{BF}}_3/∆}{\to }\left[\mathrm{X}\right]$
$\left[\mathrm{X}\right]$ will be :
(a) ${\mathrm{C}}_6{\mathrm{H}}_5-\stackrel{\oplus }{\mathrm{N}}\equiv \stackrel{⊝}{\mathrm{N}} {\mathrm{BF}}_4$
(b) ${\mathrm{C}}_6{\mathrm{H}}_5-\mathrm{F}$
(c) ${\mathrm{C}}_6{\mathrm{H}}_5-\mathrm{Cl}$
(d) ${\mathrm{C}}_6{\mathrm{H}}_5-\mathrm{H}$

In the reaction sequence :
${\mathrm{C}}_6{\mathrm{H}}_5\mathrm{Cl}\underset{\mathrm{Anhy}. {\mathrm{ZnCl}}_2}{\overset{\mathrm{HCHO}/\mathrm{conc}. \mathrm{HCl}}{\to }}\left(\mathrm{A}\right)\stackrel{{\mathrm{KMnO}}_4/\stackrel{⊝}{\mathrm{OH}}/∆}{\to }\left(\mathrm{B}\right)$
(B) will be :
(a) 
(b)
(c)
(d)

In the given reaction, the product [P] is ;

(a) 
(b)
(c)
(d)

Which of the following phrases are not correctly associated with S_N1 reaction ?
(1) Rearrangement is possible
(2) Rate is affected by polarity of solvent
(3) The strength of the nucleophile is important in determing rate
(4) The reactivity series is tertiary > secondary > primary
(5) Proceeds with complete inversion of configuration 
(a) 3,5
(b) 5 only
(c) 2,3,5
(d) 3 only

Which of the following is true about given graphs A and B?
1. $\mathrm{A}\to {\mathrm{S}}_{{\mathrm{N}}^1} , \mathrm{B}\to {\mathrm{S}}_{{\mathrm{N}}^2}$
2. $\mathrm{A}\to {\mathrm{S}}_{{\mathrm{N}}^2} , \mathrm{B}\to {\mathrm{S}}_{{\mathrm{N}}^1}$
3. $\mathrm{A} \& \mathrm{B}\to {\mathrm{E}}_1$
4. $\mathrm{A} \& \mathrm{B}\to {\mathrm{E}}_2$

In each of the following groups, which is the strongest (best) nucleophile ?
(I) (1) ${\mathrm{H}}_3\mathrm{C}-{\mathrm{O}}^{-}$ (2)  (3) ${\mathrm{H}}_3\mathrm{C}-{\mathrm{S}}^{-} \mathrm{in} {\mathrm{CH}}_3\mathrm{OH}$
(II) (1) ${\mathrm{OH}}^{-}$   (2) ${\mathrm{H}}_2\mathrm{O}$   (3) ${\mathrm{NH}}_2^{-}$ in DMF
(III) (1)  (2)  (3) ${\mathrm{CH}}_3{\mathrm{O}}^{-}$ in DMSO
(a) I,3 ; II,3 ; III,2
(b) I,2 ; II,1 ; III,3
(c) I,1 ; II,2 ; III,1
(d) I,3 ; II,1 ; III,3

$\underset{\mathrm{dimethoxy} \mathrm{ethane}}{\overset{{\mathrm{NaNH}}_2}{\to }}\left(A\right)$; Product (A) is :
(a) 
(b) 
(c) 
(d) None of these

Which of the following reaction is an elimination reaction ?
(a) 
(b) 
(c) 
(d) Both 1 and 2

From each of the following pairs select the compound that will react faster with sodium iodide in acetone :
Pair-A : (1) 2-Chloropropanne                (2) 2-Bromopropane
Pair-B : (3) 1- Bromobutane                   (4) 2-Bromobutane 
(a) 1,3
(b) 1,4
(c) 2,3
(d) 2,4

Among the given halides, which one will give same product in SN1 and SN2 reactions 

(a) (III) only
(b) (I) & (II)
(c) (III) & (IV)
(d) (I),(III) & (IV)

Product(s) formed during this reaction is/are :

(a) 
(b) 
(c) 
(d) Both 1 & 2

Anisole $\underset{\mathrm{reflux}}{\overset{\mathrm{excess} \mathrm{HI}}{\to }}Product$

Which of the following compounds would react faster with NaCN in an SN2 reaction ?

$\stackrel{\mathrm{KSH}}{\to }$Product ; Identify the product

The reaction 

proceeds by the _____ mechanism
(1) S_N1
(2) S_N2
(3) S_E2
(4) None of these

Principal organic product of the reaction will be :

Reaction of R-2-butanol with p-toulenesulphonyl chloride in pyridine followed by reaction with LiBr gives :
(1) R-2-butyl bromide
(2) S-2-butyl tosylate
(3) R-2-butyl tosylate
(4) S-2-butyl bromide

The compound which undergoes ${\mathrm{S}}_{{\mathrm{N}}^1}$ reaction most rapidly is :

Addition of KI accelerates the hydrolysis of primary alkyl halides because :
(1) KI is soluble in organic solvents
(2) the iodide ion is a weak base and poor leaving group
(3) the iodide ion is a strong base
(4) the iodide ion is a powerful nucleophile as well as a good leaving group 

$\mathrm{HC}=\mathrm{CNa}+\mathrm{Cl}-{\mathrm{CH}}_2-{\mathrm{CH}}_2-{\mathrm{CH}}_2-\mathrm{I}\to \left(\mathrm{A}\right)$; Major product (A) is :
(1) $\mathrm{H}-\mathrm{C}=\mathrm{C}-{\mathrm{CH}}_2-{\mathrm{CH}}_2-{\mathrm{CH}}_2-\mathrm{I}$
(2) ${\mathrm{CH}}_2=\mathrm{CH}-{\mathrm{CH}}_2-\mathrm{I}$
(3) $\mathrm{H}-\mathrm{C}=\mathrm{C}-{\mathrm{CH}}_2-{\mathrm{CH}}_2-{\mathrm{CH}}_2-\mathrm{Cl}$
(4) ${\mathrm{CH}}_2=\mathrm{CH}-{\mathrm{CH}}_2-\mathrm{Cl}$

What is the major product obtained in the following reaction ?

+${\mathrm{OH}}^{-}\stackrel{{\mathrm{S}}_{{\mathrm{N}}^2}}{\to }$; The product A is :
(a) 
(b) 
(c) Both (a) and (b)
(d) None is correct

${\mathrm{Me}}_2\mathrm{C}=\mathrm{CH}-{\mathrm{CH}}_2-{\mathrm{CH}}_2-\mathrm{Cl}\underset{{\mathrm{CaCO}}_3}{\overset{{\mathrm{H}}_2\mathrm{O}}{\to }}\left(\mathrm{X}\right)$; Major product of the reaction is :

1.
2.
3.
4.

Products (A) and (B) in the given below reactions, respectively, are:
 

	(A)	(B)
1.
2.
3.
4.	None of the above

Most reactive compound towards ${\mathrm{S}}_{{\mathrm{N}}^1}$ is :

1. 
2.  
3.  
4.  

Following reaction is an example of :
+${\mathrm{R}}_2\mathrm{NH}\to$
(1) ${\mathrm{S}}_{{\mathrm{N}}^2}$ reaction
(2) ${\mathrm{S}}_{{\mathrm{N}}^1}$ reaction
(3) Electrophilic addition
(4) S_N-NGP

The major product of the following reaction :