Hydrocarbons Test

Result

Hydrocarbons Test - 73

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Weekly Quiz Competition

Question 1
1 / -0

The $$IUPAC$$ name of

A
$$6-$$chloro$$-4-$$ethyl$$-5-$$methyl-hept$$-5-$$en$$-1-$$yne

B
$$6-$$chloro$$-4-$$ethyl$$-5-$$methyl-hept$$-1-$$yn$$-5-$$ene

C
$$2-$$chloro$$-4-$$ethyl$$-3-$$methyl-hept$$-2-$$en$$-6-$$yne

D
$$2-$$chloro$$-4-$$ethyl$$-3-$$methyl-hept$$-6-$$yn$$-2-$$ene

Solution
Question 2
1 / -0

Write the $$IUPAC$$ name of

A
$$6,6-$$dibromoheptan$$-2-$$ol

B
$$2,2-$$dibromoheptan$$-6-$$ol

C
$$6,6-$$dibromoheptane$$-2-$$ol

D
None of these

Solution
Question 3
1 / -0

$$IUPAC$$ name of the compound $$CH_3-CH_2-CH_2-C(CH_3)_2-CH_3$$

A
$$1,1-$$dimethyl pentane

B
$$2,2-$$dimethyl pentane

C
$$1,2-$$dimethyl pentane

D
none of these

Solution
Question 4
1 / -0

$$IUPAC$$ name of the following compounds is

A
2-cyclohexylbutane

B
2-phenylbutane

C
3-cyclohexylbutane

D
3-phenylbutane

Solution
Question 5
1 / -0

Addition of $$HCl$$ to vinyl chloride gives $$1, 1-$$ dichloroethane because of

A
Mesomeric effect of $$Cl$$

B
Inductive effect of $$Cl$$

C
Restricted rotation around double bond

D
None of these

Solution
Question 6
1 / -0

The correct $$IUPAC$$ name of $$\begin{matrix} { H }_{ 2 }C=CH-{ CH-CH }_{ 2 }C\equiv CH \\ | \\ { CH }_{ 3 } \end{matrix}$$

A
$$3-$$methyl$$-1-$$hexen$$-5-$$yne

B
$$4-$$methyl$$-5-$$hexen$$-1-$$yne

C
$$3-$$(ethyl)$$-1-$$pentyne

D
$$3-(2-propenyl)$$ butane $$-1$$

Solution
Question 7
1 / -0

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

A
$$1-$$methyl-$$1-$$aminopropane

B
$$2-$$aminobutane

C
$$2-$$methyl-$$3-$$aminopropane

D
All of the above

Solution
Question 8
1 / -0

If $$CH_4$$ is known as methane, then $$C_9H_{20}$$ is known as

A
Hexane

B
Nonane

C
Octane

D
Butane

Solution
Question 9
1 / -0

Identify the product $$D$$ in the following series of reaction

$$CH_{3}COOH\xrightarrow[]{LiAlH_{4}}A\xrightarrow[H^{+}]{443 \,K}B\xrightarrow[]{Br_{2}}C\xrightarrow[KOH]{alc.}D$$

A
Methane

B
Alcohol

C
Acetylene

D
Benzaldehyde

Solution

$$CH_{3}-COOH\xrightarrow[]{LiAlH_{4}}CH_{3}-CH_{2}-OH\xrightarrow[443 \,K]{H^{+}}CH_{2}=CH_{2}\xrightarrow[]{Br_{2}}\underset{Br}{\underset{|}{CH_{2}}}-\underset{Br}{\underset{|}{CH_{2}}}\xrightarrow[KOH]{alc.}$$

$$\underset{Acetylene
}{CH\equiv CH}+2KBr+2H_{2}O$$
Question 10
1 / -0

The compound having only primary hydrogen atom is

A
Isobutane

B
$$2,3-$$Dimethylbutene

C
Cyclohexane

D
Propyne

Solution

The compound having only primary hydrogen atom is propyne.

Propyne have the structure $$CH_3-C\equiv CH$$

It consists $$2$$ primary carbon (a carbon to which single carbon is bonded) and one secondary carbon. Its structure shows that it contains only primary hydrogen.