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Chemistry
Hydrocarbons
NCERT Solutions
NCERT Solutions
Hydrocarbons
7 Solutions
Q1
In-text Problems
Write structures of different chain isomers of alkanes corresponding to the molecular formula
C
6
H
14
\text{C}_6\text{H}_{14}
C
6
H
14
. Also write their IUPAC names.
Q2
In-text Problems
Write structures of different isomeric alkyl groups corresponding to the molecular formula
C
5
H
11
\text{C}_5\text{H}_{11}
C
5
H
11
. Write IUPAC names of alcohols obtained by attachment of -OH groups at different carbons of the chain.
Q3
In-text Problems
Write IUPAC names of the following compounds :
(i)
(
CH
3
)
3
C
CH
2
C
(
CH
3
)
3
(\text{CH}_3)_3\text{C} \text{CH}_2\text{C}(\text{CH}_3)_3
(
CH
3
)
3
C
CH
2
C
(
CH
3
)
3
(ii)
(
CH
3
)
2
C
(
C
2
H
5
)
2
(\text{CH}_3)_2\text{C}(\text{C}_2\text{H}_5)_2
(
CH
3
)
2
C
(
C
2
H
5
)
2
(iii)
tetra - tert-butylmethane
Q4
In-text Problems
Write structural formulas of the following compounds :
(i)
3, 4, 4, 5-Tetramethylheptane
(ii)
2,5-Dimethyhexane
Q5
In-text Problems
Write structures for each of the following compounds. Why are the given names incorrect? Write correct IUPAC names.
(i)
2-Ethylpentane
(ii)
5-Ethyl-3-methylheptane
Q6
In-text Problems
Sodium salt of which acid will be needed for the preparation of propane ? Write chemical equation for the reaction.
Q7
In-text Problems
Write IUPAC names of the following compounds:
(i)
A structure with a ten-carbon chain, double bonds at C-3 and C-6, and methyl groups at C-2 and C-8.
(ii)
CH
2
=
CH
−
CH
=
CH
−
CH
=
CH
−
CH
=
CH
2
\text{CH}_2=\text{CH}-\text{CH}=\text{CH}-\text{CH}=\text{CH}-\text{CH}=\text{CH}_2
CH
2
=
CH
−
CH
=
CH
−
CH
=
CH
−
CH
=
CH
2
(iii)
CH
2
=
C
(
CH
2
CH
2
CH
3
)
2
\text{CH}_2=\text{C}(\text{CH}_2\text{CH}_2\text{CH}_3)_2
CH
2
=
C
(
CH
2
CH
2
CH
3
)
2
(iv)
A structure with a ten-carbon chain, a double bond at C-4, an ethyl group at C-4, and methyl groups at C-2 and C-6.
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