Hydrocarbons Test

Result

Hydrocarbons Test - 47

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Weekly Quiz Competition

Question 1
1 / -0

Which is correct $$IUPAC$$ name of the following compound?

A
$$3-$$isopropyl$$-2-$$methylpentane

B
$$3-$$ethyl$$-2,4-$$dimethylpentane

C
$$2,4-$$dimethyl$$-3-$$ethylpentene

D
$$3-$$isopropyl$$-4-$$methylpentane

Solution
Question 2
1 / -0

The total number of possible isomeric trimethyl benzene is

A
$$2$$

B
$$3$$

C
$$4$$

D
$$6$$

Solution

Three isomers are possible.
Question 3
1 / -0

Credit for the ring structure of benzene goes to

A
Wholer

B
Faraday

C
Kekule

D
Baeyer

Solution

Correct opyion is C.
Question 4
1 / -0

Benzene reacts with chlorine to form benzene hexachloride in presence of

A
Nickel

B
$$AlCl_3$$

C
Bright sunlight

D
Zinc

Solution

Option B is correct.
Question 5
1 / -0

Cyclopentadienyl anion is

A
Aromatic

B
Non-aromatic

C
Non-planar

D
Aliphatic

Solution

Cyclopentadienyl anion is an aromatic compound since it is planar, completely conjugated and has $$6\pi$$ electrons.
Question 6
1 / -0

Iodoethane reacts with sodium in the presence of dry ether. The product is

A
pentane

B
propane

C
butene

D
butane

Solution

Iodoethane reacts with sodium in the presence of dry ether to give butane.

$$C_2H_5I + 2Na + IC_2H_5 \xrightarrow[\text{Dry}]{\text{Ether}} \underset{\text{Butane}}{C_2H_5 - C_2H_5} + 2Nal$$
Question 7
1 / -0

Benzene hexachloride is

A
$$1,2,3,4,5,6 - hexachlorocyclohexane$$

B
$$1,1,1,6,6,6 - hexachlorocyclohexane$$

C
$$1,6 - phenyl-1 , 6-chlorohexane$$

D
$$1,1 - phenyl - 6 , 6 - chlorohexane$$

Solution
Question 8
1 / -0

The $$IUPAC$$ of $$\begin{matrix} { CH }_{ 3 }-CH-{ CH }_{ 3 } \\ | \\ { NH }_{ 2 } \end{matrix}$$

A
Dimethyl

B
$$2-$$aminopropane

C
Isopropylamine

D
$$2-$$propanamine

Solution

$$\begin{matrix} \overset { 3 }{ { CH }_{ 3 } } & - & \overset { 2 }{ CH } & - & \overset { 1 }{ { CH }_{ 3 } } \\ & & | & & \\ & & { NH }_{ 2 } & & \end{matrix}$$
$$2-$$aminopropane
Question 9
1 / -0

Which is not found in alkenes?

A
Chain isomerism

B
Geometrical isomerism

C
Metamerism

D
Position isomerism

Solution

Metamerism is a special type of isomerism shown by secondary amines, ethers and ketones. Metamerism is not found in alkenes.
Question 10
1 / -0

Chlorobenzene is

A
Less reactive than benzyl chloride

B
More reactive than ethyl bromide

C
Nearly as reactive as methyl chloride

D
More reactive than isopropyl chloride

Solution

Chlorobenzene is less reactive than benzyl chloride.
In chlorobenzene the lone pairs present on $$Cl$$ atom get involved in resonance with $$\pi$$ electrons of benzene due to which $$C - Cl$$ bond acquires double bond character Hence , reactivity decreases.