Haloalkanes and Haloarenes Test

Result

Haloalkanes and Haloarenes Test - 69

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TIME Taken - -

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Weekly Quiz Competition

Question 1
1 / -0

Which one of the following compound will be most reactive for $$S_N1$$ reaction ?

A

B

C

D
Question 2
1 / -0

The Major products obtained when this substance is subjected to $${ E }_{ 2 }$$ reaction will be:

A

B

C

D
both $$1$$ and $$3$$

Solution

For $$E_{2}$$ elimination, the hydrogen atom adjacent to the $$Cl$$ atom needs to be in the opposite side of the ring.
Question 3
1 / -0

Given reaction is an example of Nucleophilic aromatic substitution. Which of the following halide $$(-X)$$ is most readily replaced.

A
$$-F$$

B
$$-Cl$$

C
$$-Br$$

D
$$-I$$

Solution

Flourine is readily replaced in nucleophilic aromatic substitution reaction as it has higher $$-I$$ effect compared to other halogens.
Question 4
1 / -0

$$CH_3 - \underset{CH_3\!\!\!\!\!}{\underset{|}{\overset{CH_3\!\!\!\!\!}{\overset{|}{C}}}} - Br \xrightarrow[\Delta]{KOH (alcoholic)} (A) \xrightarrow{HBr/R_2O_2} \underset{(Major)}{(B)}$$ Product $$B$$ is:

A
$$CH_3 - \underset{H}{\underset{|}{\overset{\,\,\,\,\,CH_3}{\overset{|}{C}}}} - CH_2 - Br$$

B
$$CH_3 - \underset{\,\,\,Br}{\underset{|}{\overset{\,\,\,\,\,CH_3}{\overset{|}{C}}}} - CH_3$$

C
$$CH_3 - \underset{\,\,\,\,\,\,\,\,\,\,\,CH_2 - Br}{\underset{|\,}{\overset{\,\,\,\,\,\,CH_3}{\overset{|\,}{C}}}} - OH$$

D
$$CH_3 - \underset{\,\,\,\,\,\,CH_3}{\underset{|}{\overset{\,\,\,\,\,\,\,\,\,\,\,\,CH_2 - H}{\overset{|}{C}}}}-Br$$

Solution
Question 5
1 / -0

The reaction of toluene with chlorine in the presence of light gives:

A

B

C

D

Solution

Reaction of methylbenzene i.e. toluene with chlorine in the presence of sunlight is a free radical substitution .

in this reaction hydrogen atoms from side chain get replaced get replaced by chlorine .on monochlorination benzyl chloride is formed on dichlorination benzal chloride and on trichlorination benzochloride is formed.
Question 6
1 / -0

n-Propyl chloride and isopropyl chlordie mixture is subjected to the Wurtz reaction, which one of the following compounds is not formed.

A
Hexane

B
2,5-Dimethyl hexane

C
2,3-Dimethyl butane

D
2-Methyl pentane
Question 7
1 / -0

Product D in the reaction is:

A
optically active cyanide

B
optically inactive cyanide

C
optically active acid

D
optically active aldehyde
Question 8
1 / -0

Identify the compound that give product on reaction with Zn dust and heat.

A

B

C

D
Question 9
1 / -0

The herbicide 2,4-dichlorophenoxyacetic acid, generally called 2,4-D, is synthesized from 2,4-dichlorophenol and chloroacetic acid. The synthesis involves which of these reactions:

A
$$\rm{S_N1}$$

B
$$\rm{ArS_N}$$

C
$$\rm{S_N2}$$

D
$$\rm{S_Ni}$$
Question 10
1 / -0

Which of the following compound give solvolysis reaction with slowest rate?

A
$$P-\overset { \oplus }{ N } { R }_{ 3 }-{ C }_{ 6 }{ H }_{ 4 }-C{ H }_{ 2 }-Br$$

B
$$P-CCl_{3}-C_{6}H_{4}-CH_{2}-Br$$

C
$$p-N$$$$\equiv C- $$$$C_{6}H_{4}-CH_{2}-Br$$

D
$$C_{6}H_{5}-CH_{2}-Br$$