Hydrocarbons Test

Result

Hydrocarbons Test - 20

Score
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Weekly Quiz Competition

Question 1
4 / -1

When chlorine is passed through warm benzene in presence of the sunlight, the product obtained is

A
benzotrichloride

B
chlorobenzene

C
gammexane

D
DDT

Solution
Question 2
4 / -1

Aromatic compound among other things should have a π-electron cloud containing (4n + 2) π-electrons where, n cannot be

A
1/2

B
3

C
2

D
1
Question 3
4 / -1

Isomers of hexane, based on their branching can be divided into three distinct classes as shown in the figure. The correct order of their boiling point is

A
I > II > III

B
III > II > I

C
II > III > I

D
III > I > II

Solution
Question 4
4 / -1

Which of the following is correct order according to boiling point?

A
n-pentane < n-hexane < 2,3-dimethyl butane

B
n-pentane < 2,3-dimethyl butane < n-hexane

C
2,3-dimethyl butane < n-hexane < n-pentane

D
n-hexane < 2,3-dimethyl butane < n-pentane
Question 5
4 / -1

The number of optically active products obtained from the complete ozonolysis of the given compound

A
0

B
1

C
2

D
4
Question 6
4 / -1

A

B
CH₃ —CH₂ —CH₂ CHO

C
CH₃ —CH₂ —CH₂ —COOH

D
None of the above
Question 7
4 / -1

Which branched chain isomer of the hydrocarbon with molecular mass 72u gives only one isomer of mono substituted alkyl halide?

A
Tertiarybutyl chloride

B
Neo-pentane

C
Iso-hexane

D
Neo-hexane

Solution
Question 8
4 / -1

Which of the following is a conjugated diene?

A
CH₃ CH=C=CHCH₃

B
CH₂= CHCH₂ CH=CH₂

C
CH₂=CHCH₂ CH₂ CH=CH₂

D
Question 9
4 / -1

Ozonolysis of an organic compound A produces acetone and propionaldehyde in equimolar mixture. Identify A from the following compounds.

A
2 -methyl- 1-pentene

B
1-pentene

C
2-pentene

D
2 -methyl-2-pentene
Question 10
4 / -1

Identify B and D in the following sequence of reactions.

A
Methanol and bromoethane

B
Ethyl hydrogen sulphate and alcoholic KOH

C
Ethyl hydrogen sulphate and aqueous KOH

D
Ethanol and alcoholic KOH

Solution