Question

Match List - I with List - II: 

Choose the correct answer from the given below options

• A. (A)-(I), (B)-(II), (C)-(III), (D)-(IV)
• B. (A)-(II), (B)-(III), (C)-(IV), (D)-(I)
• C. (A)-(I), (B)-(III), (C)-(II), (D)-(IV)
• D. (A)-(III), (B)-(I), (C)-(IV), (D)-(II)

Hint:

When naming organic compounds, identify the longest carbon chain, number the chain, and locate the substituents correctly to assign the correct IUPAC name.

Answer 1

The Correct Option is C

- Structure (A) corresponds to a molecule with a methyl group attached to a pentene, and the correct IUPAC name is 4-methylpent-1-ene, so (A)-(I). 
- Structure (B) is a dimethyl-substituted heptane, and the correct IUPAC name is 4, 4-dimethylheptane, so (B)-(III). 
- Structure (C) is a compound with an ethyl group and a methyl group attached to a heptane chain, and the correct name is 3-ethyl-5-methylheptane, so (C)-(II). 
- Structure (D) is a compound with a methyl group and a pentadiene chain, and the correct name is 2-methyl-1,3-pentadiene, so (D)-(IV). 
Thus, the correct matching is (A)-(I), (B)-(III), (C)-(II), (D)-(IV).

Answer 2

Step 1: Understand the question.
We are given a list of hydrocarbon structures (List - I) and a list of corresponding IUPAC names (List - II). We need to correctly match each structure with its IUPAC name based on the rules of nomenclature.

List - I (Structures):
(A) C₆H₁₃CH = CH₂
(B) (CH₃)₂C(C₂H₅)₂
(C) CH₃CH₂C(CH₃)CH₂
(D) CH₂CH₂C(CH₃)C = CH₂

List - II (IUPAC Names):
(I) 4-Methylpent-1-ene
(II) 4,4-Dimethylheptane
(III) 3-Ethyl-5-methylheptane
(IV) 2-Methyl-1,3-pentadiene

Step 2: Identify and name each structure.
- (A) C₆H₁₃CH = CH₂:
This compound has a double bond at the end and a methyl group attached to the fourth carbon of a pentene chain.
Thus, it is named 4-Methylpent-1-ene. → (I)

- (B) (CH₃)₂C(C₂H₅)₂:
This structure represents a heptane derivative with two methyl groups on the fourth carbon atom.
Thus, it is named 4,4-Dimethylheptane. → (II)

- (C) CH₃CH₂C(CH₃)CH₂:
This corresponds to a branched heptane structure containing both an ethyl and a methyl substituent at positions 3 and 5 respectively.
Thus, it is named 3-Ethyl-5-methylheptane. → (III)

- (D) CH₂CH₂C(CH₃)C = CH₂:
This compound contains two double bonds (a diene) with a methyl substituent on the second carbon.
Thus, it is named 2-Methyl-1,3-pentadiene. → (IV)

Step 3: Final matching.
(A) → (I) 4-Methylpent-1-ene
(B) → (III) 3-Ethyl-5-methylheptane
(C) → (II) 4,4-Dimethylheptane
(D) → (IV) 2-Methyl-1,3-pentadiene

Final Answer:
\[ \boxed{(A)-(I), (B)-(III), (C)-(II), (D)-(IV)} \]