Introduction to Nucleophilic Substitution Reaction

Q. Write the structures of the major products expected from the following reactions:

$A$: Mononitration of 3-methylphenol

$B$: Dinitration of 3-methylphenol

$C$: Mononitration of phenyl methanoate

Q. Consider the reaction :
$C{H}_{3}C{H}_{2}C{H}_{2}Br+NaCN\to C{H}_{3}C{H}_{2}C{H}_{2}CN+NaBr$
This reaction will be fastest in :

1. N, N'-dimethylformamide (DMF)
2. Water
3. ethanol
4. Methanol

Q. Correct order for nucleophilic addition reaction.

1. 2 > 1 > 3 > 4
2. 4 > 3 > 2 > 1
3. 2 > 3 > 4 > 1
4. 4 > 2 > 3 > 1

Q. The correct order of rate of reaction toward nucleophilic addition reaction.

1. a > b > c > d > e
2. a > b > d > c > e
3. a > d > e > b > c
4. a > b > e > d > c

Q.

Which of the following actinoids show oxidation states upto $+7?$

1. $Pu$
2. $Np$
3. $Am$
4. $U$

Q. Which of the following is a good method for the conversion of an alcohol into an alkyl chloride?

1. By treating the alcohol with $SOC{l}_2$
2. By treating the alcohol with $PC{l}_5$
3. By treating the alcohol with $PC{l}_3$
4. By treating alcohol with Lucas reagent

Q. In nucleophilic addition reactions aldehydes are more reactive than ketones due to

1. +I effect
2. -I effect
3. Resonance
4. Electromeric effect

Q. Bond breaking and bond making takes place in a single step in reaction.

1. $S_{N}2$
2. $S_{N}1$
3. $E_1$
4. $S_{N}i$

Q. Consider the following reactions, which are carried out at the same temperature.
$C{H}_3-Br+O{H}^{\ominus }\stackrel{EtOH}{⟶}C{H}_3-OH+B{r}^{\ominus }...\left(i\right)C{H}_3-Br+O{H}^{\ominus }\stackrel{DMSO}{⟶}C{H}_3-OH+B{r}^{\ominus }...\left(i\right)$
Which of the following statement is correct about these reactions?

1. Both the reactions take place at the same rate
2. The first reaction takes place faster than second reaction.
3. The second reaction takes place faster than first reaction.
4. Both the reactions take place by $S_{N}1$ Mechanism

Q.
Find the product Q.

1. 
2. 
3. 
4. 

Q.

WHY DIFFERENT REACTIONS PROCEED WITH DIFFERENT RATES??

Q.
Identify the product formed:

1. 
2. 
3. 
4. 

Q. What will be the product of the following reaction:

1. 
2. 
3. 
4. 

Q. $Ph-\underset{\underset{H}{\mid }}{\stackrel{Me}{\stackrel{\mid }{C}}}-OH\underset{C_5{H}_{5}Nmedium}{\stackrel{SOC{l}_2}{⟶}}$
Which statement is true for the above reaction?

1. Retention of configuration
2. Inversion of configuration
3. Both (A) and (B)
4. None of the above

Q. In which reaction incorrect product is formed ?

1. $C{H}_3-COC{H}_3\underset{\text{conc.}HCl}{\overset{Zn-Hg}{\to }}C{H}_3-C{H}_2-C{H}_3$
2. $Ph-I+C_2{H}_{5}ONa\to Ph-O{C}_2{H}_5$
3. $C{H}_3-CHO\underset{\text{dil.}NaOH}{\overset{\Delta }{\to }}C{H}_3-CH=CH-CHO$
4. $HCHO\stackrel{\text{conc.}NaOH}{\to }HCOONa+C{H}_{3}OH$

Q. Express -25.6875 in p/q form

Q. How many 1, 2-Shifts are involved during the course of following reaction:

1. 1
2. 2
3. 3
4. 4

Q. The major product of the following raction is :

1. 
2. 
3. 
4. 

Q. Match the reactions from List-I with the catalyst or reagent used in them from List-II.

List-I	List-II
A) Sabatier Senderens reaction	1) Anhydrous $AlC{l}_3$
B) Friedel crafts reaction	2) $Ni+H_2$
C) Wurtz reaction	3) Sodium acetate
D) Kolbe's electrolysis	4) $Na$ 5) $C{H}_4$

1. A-2, B-1, C-4, D-3
2. A-1, B-2, C-5, D-4
3. A-2, B-5, C-2, D-1
4. A-3, B-4, C-2, D-1

Q. Carbocation intermediate is formed in $S_{N}1$ type of reactions.

1. True
2. False

Q. Predict the major product in the reaction shown.

1. o-bromonitrobenzene
2. m-bromonitrobenzene
3. p-bromonitrobenzene
4. 1, 3- dibromobenzene

Q. Nucleophilic addition reaction will be most favoured in

1. $C{H}_{3}C{H}_{2}CHO$
2. $C{H}_{3}CHO$
3. 
4. $(C{H}_3{)}_{2}C=O$

Q. Which of the following is the strongest base?

1. 
2. 
3. 
4. 

Q. Major product will be:

1. 
2. 
3. 
4.