The correct option is
D Methylpentane
The explanation for the correct option:
Option(D): Methylpentane
- The Isopropyl group is known as a portion of the molecular structure of the Propyl group having a three-carbon Alkyl substituent with the chemical formula.
- We can look at the structure of Methylpentane, given as:
![](https://byjus-answer-creation.s3.amazonaws.com/uploads/4142Chemistry_62ab37e0df08c0c8b2fc3aea_a.jpg_img_upload_solution_2022-07-06 07:45:24.810359.png)
- This structure suggests that the given compound contains one Isopropyl group.
The explanation for the incorrect option:
Option(A): Tetramethylpentane
- The Structure of the compound Tetramethylpentane can be given as:
![](https://byjus-answer-creation.s3.amazonaws.com/uploads/4142Chemistry_62ab37e0df08c0c8b2fc3aea_b.jpg_img_upload_solution_2022-07-06 07:46:25.576604.png)
- The above structure represents that the given compound doesn’t contain any Isopropyl group.
Option(B): Dimethylpentane
- The Structure of the compound Dimethylpentane can be given as:
![](https://byjus-answer-creation.s3.amazonaws.com/uploads/4142Chemistry_62ab37e0df08c0c8b2fc3aea_c.jpg_img_upload_solution_2022-07-06 07:46:40.173266.png)
- The above-represented structure doesn’t contain any Isopropyl group.
Option(C): Trimethylpentane
- The Structure of the compound Trimethylpentane can be given as:
![](https://byjus-answer-creation.s3.amazonaws.com/uploads/4142Chemistry_62ab37e0df08c0c8b2fc3aea_d.jpg_img_upload_solution_2022-07-06 07:46:59.940955.png)
- This structure doesn’t also have any Isopropyl group.
Hence, the compound with one Isopropyl group is Methylpentane, option (D) is the correct answer.