Nucleophilic Substitution

Q.

On electrolysis of brine solution, the products formed are

1. sodium and chlorine

2. hydrogen, chlorine and oxygen

3. hydrogen, chlorine and sodium hydroxide

4. sodium hydroxide, chlorine and oxygen

Q. Given below are two reactions :
$\left(i\right)C_6{H}_6+ICl\stackrel{Anhyd.AlC{l}_3}{\to }\text{iodobenzene}$
$\left(ii\right)C_6{H}_6+I_2\stackrel{Anhyd.AlC{l}_3}{\to }\text{iodobenzene}$

1. Reaction (i) is more favored for preparation of iodobenzene as compared to reaction (ii)
2. Reaction (ii) is more favored for preparation of iodobenzene as compared to reaction (i)
3. Both are equally favored for preparation of iodobenzene.
4. Chlorobenzene is formed in reaction (i) instead of iodobenzene.

Q. The order of reactivity of following alcohols with halogen acids is:

1. $\left(B\right)>\left(A\right)>\left(C\right)$
2. $\left(A\right)>\left(B\right)>\left(C\right)$
3. $\left(C\right)>\left(B\right)>\left(A\right)$
4. $\left(A\right)>\left(C\right)>\left(B\right)$

Q.

Urea on hydrolysis gives:

1. Acetamide

2. Nitrogen

3. Carbonic acid

4. Ammonium hydroxide

Q. The reactivities of acid halides (I), anhydrides (II), esters (III) and amides (IV) with nucleophilic reagents follow the order :

1. IV > III > II > I
2. I > III > II > IV
3. III > II > I > IV
4. I > II > III > IV

Q. The reaction is faster when X is :

1. $Cl$
2. $N{H}_2$
3. $O{C}_2{H}_5$
4. $OCOR$

Q. The compound that will react with $HBr$ most readily is:

1. ${\left(C{H}_3\right)}_{3}COH$
2. ${\left(C{H}_3\right)}_{2}CHOH$
3. $C{H}_{3}C{H}_{2}OH$
4. $C_6{H}_{5}OH$

Q. Acetone can be converted into pinacol by :

1. $Mg/Hg/H_{2}O$
2. $Zn/Hg/HCl$
3. $Na/Hg/H_{2}S{O}_4$
4. all of the above

Q. Methyl ester reacts with $EtMgBr$ to give $3^o$ alcohol (figure). The ester is:

1. Methyl propanoate
2. Methyl butanoate
3. Methyl ethanoate
4. Methyl formate

Q. Which of the following is a purest form of charcoal?

1. Wood Charcoal
2. Animal Charcoal
3. Bone Charcoal
4. Sugar Charcoal

Q. The reaction is faster when X is :

1. $Cl$
2. $N{H}_2$
3. $O{C}_2{H}_5$
4. $OCOR$

Q. Carbon dioxide is a good nucleophile.

1. False
2. True

Q. ________ form of coal is the purest form.

1. Wood charcoal
2. Coke
3. Tar
4. Sugar charcoal

Q. Carbon dioxide is a good nucleophile.

1. False
2. True

Q.

H.V.Z reaction involves the use of P and $C{l}_2$
$C{H}_{3}C{H}_{2}COOH\stackrel{P,C{l}_2}{\to }C{H}_{3}CHClCOOH$ The function of phosphorus is

1. As a catalyst

2. In the formation of $PC{l}_3$ which carries out halogenation at the $\alpha$ - carbon atom

3. In the formation of $PC{l}_3$ which converts - COOH into - COCl.

4. None of the three

Q. In the reaction shown, (X) and (Y) respectively are :

1. 5-bromosalicylic acid and 5-nitrosalicylic acid
2. o-bromophenol and o-nitrophenol
3. 2, 4, 6-tribromophenol and picric acid
4. 3, 5-dibromosalicylic acid and 3, 5-dinitrosalicylic acid

Q. The reaction is faster when X is :

1. $Cl$
2. $N{H}_2$
3. $O{C}_2{H}_5$
4. $OCOR$

Q.

Acetic anhydride reacts with phosphorus pentachloride to yield

1. Methyl chloride, phosphorus acid

2. Acetylchloride, phosphoryl chloride

3. Ethyl actetate, phosphorus trichloride

4. Acetone, phosphoryl chloride

Q.

Ethylbenzoate reacts with phosphorus pentachloride to give:

1. ethyl chloride

2. all of the above

3. benzoyl chloride

4. phosphoryl chloride

Q.

Urea on hydrolysis gives:

1. Acetamide

2. Nitrogen

3. Carbonic acid

4. Ammonium hydroxide

Q.

Product is ?

1. 
   

2. 
   

3. 
   

4. 
   

Q.

1. $C{H}_{3}COOH$

2. $C{H}_{3}COC{H}_3$

3. 

4. 

Q. Which of the following product is obtained when nitropethane is treated with NaOCl solution?

1. 1-chloro-1-nitroethane
2. 1, 1-dichloro-1-nitroethane
3. A mixture of 1-chloro-1-nitroethane and 1, 1-dichloro-1-nitroethane
4. None of the above

Q.

Product is ?

1. 
   

2. 
   

3. 
   

4. 
   

Q.

Acetic anhydride reacts with phosphorus pentachloride to yield

1. Methyl chloride, phosphorus acid

2. Acetylchloride, phosphoryl chloride

3. Ethyl actetate, phosphorus trichloride

4. Acetone, phosphoryl chloride

Q.

Acetic anhydride is prepared by:

1. Heating acetyl chloride with an acetate

2. Ketene + acetic acid

3. Dehydration of acetic acid

4. All of the above

Q.

Ethylbenzoate reacts with phosphorus pentachloride to give:

1. ethyl chloride

2. benzoyl chloride

3. phosphoryl chloride

4. all of the above