Haloalkanes and Haloarenes Test

Result

Haloalkanes and Haloarenes Test - 70

Score
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TIME Taken - -

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Weekly Quiz Competition

Question 1
1 / -0

Arrange the following in order of decreasing rate in an $$E_2$$ reaction

A
$$1 > 2 > 3$$

B
$$3 > 1 > 2$$

C
$$3 > 2 > 1$$

D
$$2 < 3 < 1$$
Question 2
1 / -0

The major product of the following reaction is:

A

B

C

D
Question 3
1 / -0

Product (D) in the reaction is:

A
optically active cyanide

B
optically inactive acid

C
optically active acid

D
optically active aldehyde

Solution

In the following reaction first step is Wurtz reaction and then Bromine addition which further react with $$KCN$$ and after hydrolysis it gives the optically inactive carboxylic acid.

Option B is correct.
Question 4
1 / -0

Which of the following is most likely to show optical isomerism?

A

B

C

D
Question 5
1 / -0

The reaction of tertiary butyl bromide with sodium methoxide gives

A
Isobutane

B
Tertiary butyl methyl ether

C
Isobutylene

D
Butene

Solution
Question 6
1 / -0

The IUPAC name of this compound is-

A
2- Flouro-4-chloro-2,4-diethyl-1-pentane

B
3-Flouro-5-chloro-3-methyl-5-ethyl-1-hexane

C
3-Chloro-5-fluoro-3,5-dimethyl-1-heptane

D
3,5-Dimethyl-5-fluoro-3-chloro-heptane

Solution
Question 7
1 / -0

2-methylbut -3-en-2-ol reacts with $$HBr$$ and

A
Produces $$1^\circ$$ - Bromide as major product through $$S_N 1$$ mechanism

B
Produces $$3^\circ$$ - Bromide as major product through $$S_N 1$$ mechanism

C
Produces $$1^\circ$$ - Bromide as major product through $$S_N 2$$ mechanism

D
Produces $$3^\circ$$ - Bromide as major product through $$S_N 2$$ mechanism
Question 8
1 / -0

Identify 'Z' in the following reaction series , $$CH_{3}CH_{2}CH_{2}Br \xrightarrow {NaOH} (X) \xrightarrow [ \triangle] {Al_{2}O_{3}} (Y) \xrightarrow {HOCl} (Z) $$

A

B

C

D

Solution

Option B is correct.
Question 9
1 / -0

By Wurtz reaction which of the following will give you n - hexane?

A
$$1$$-chloro propane

B
$$2$$-chloro propane

C
Both of these

D
None of these
Question 10
1 / -0

When alkyl halide is heated with an aqueous solution of silver nitrite,it gives:

A
Nitroalkane only

B
Alkyl nitrite only

C
Alkyl amine

D
None of these

Solution

On treating ethanolic solution of nitroalkane with silver nitrite $$Ag-O-N=O$$ nitroalkane is formed because since the bond between $$Ag-O$$ is covalent, the lone pair on nitrogen acts as an attacking site for nucleophilic substitution.

$$R-X + AgNO_2 \rightarrow R-NO_2 +AgX$$

Hence the correct option is A.