Haloalkanes and Haloarenes Test

Result

Haloalkanes and Haloarenes Test - 7

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Weekly Quiz Competition

Question 1
4 / -1

Consider the following reaction,

Q.

The major product in the above reaction is

A
K₂CO₃

B
CO₂

C
C(OH)₄

D
HCOOK

Solution
Question 2
4 / -1

Nitro chloropicrin is prepared-by the action of chloroform and

A
hot KNO₃(aq)

B
hot NaNO₂(aq)

C
hot Cone. HNO₃

D
hot dil. NaNO₂(aq) + NaNO₂(aq)

Solution
Question 3
4 / -1

On heating glycerol with excess of HI gives

A
allyl iodide

B
isopropyl iodide

C
propylene

D
1 ,2,3-tri iodopropane

Solution
Question 4
4 / -1

A geminal dichloride is formed in all of the following reactions except

A
CH₃CHO and PCl₅

B
CH₃COCH₃ and PCI₅

C

D

Solution
Question 5
4 / -1

A + KOBr → CHBr₃ + CH₃COOK; Here A is

A
isopropanol

B
methanol

C
ethanoic acid

D
n-butyl alcohol

Solution
Question 6
4 / -1

The product obtained when bleaching pow der is distilled with acetone

A
CCI₄

B
CHCI₃

C
CH₂CI₂

D
CH₃CI

Solution
Question 7
4 / -1

What are the products in the following reaction?

A
CH₂CI₂, CH₃CI, CH₄

B
CH₄, CH₃CI, CH₂CI₂

C
CH₃CI, CH₂CI₂, CH₄

D
CH₃CI, CH₄, CH₂CI₂

Solution

Reducing power of Zn increases as :
alcohol < H₂O < H₂O / H⁺
Question 8
4 / -1

The end product in the following reaction is

A

B

C

D

Solution
Question 9
4 / -1

What is the product formed in the following reaction?

A

B

C

D

Solution

Alkyl halides on heating undergo rearrangement into higher degree alkyl halide as :
Question 10
4 / -1

What is the major product in the following reaction?

A

B

C

D

Solution

Hunsdiecker reaction.
Question 11
4 / -1

What is the major product in the following reaction?

A
2-propanol

B
2-chloro-2-propanol

C
Propanone

D
Propanal

Solution
Question 12
4 / -1

What is formed predominantly in the following reaction?

A
CSCI₂

B
CCI₄

C
C₂CI₆

D
C₂SCI₄

Solution

It is industrial preparation of CCI₄.
Question 13
4 / -1

The major organic product in the following reaction is

A
CH₃CFCICH₃

B
CH₃CF₂CH₃

C
FCH₂CF₂CH₂F

D
F₂CHCCI₂CHF₂

Solution

Swarts reaction-both chlorides are replaced here by fluoride.
Question 14
4 / -1

Which of the following alkyl halides can produce only a single alkene product when treated with sodium methoxide?

A
2-chloro-2-methyl pentane

B
3-chloro-3-ethyl pentane

C
3-chloro-2-methyl pentane

D
2-chloro-4-methyl pentane

Solution

In the above reaction, all β-H are equivalent. Hence, a single alkene is formed in E2 reaction
Question 15
4 / -1

Which of the following is a tertiary halogenoalkanes?

A
2-Bromopentane

B
2-Bromo 3-methylpentane

C
Bromopentane

D
2-Bromo 2-methylpentane

Solution

√Br CH₃ -( CH )- CH₂ - CH₂ - CH₃ √CH₃ The carbon with which the Br is bonded is bonded with another 3 carbon atoms. So haloalkane is 3.
Question 16
4 / -1

Which of the following is not true about optical isomers?

A
They rotate the plane polarized light.

B
They are superimposable on their mirror image.

C
They posses at least one chiral carbon atom.

D
They are nonsuperimposable on their mirror image.

Solution

Superimposable (mirror images of each other) substances are achiral because chiral substances cannot have its own mirror image. And achiral substances do not show optical activity nor any optical isomers. Hence, answer is B.