Concept explainers
Which functional group is not present in this molecule?
- A. carboxyl
- B. sulfhydryl
- C. hydroxyl
- D. amino

Introduction:
The different properties of an organic molecule not only depend upon the carbon skeleton’s arrangement, it also depends on the different chemical groups attached to the skeleton.
Answer to Problem 1TYU
Correct answer:
The functional group that is not present in the given molecule is sulfhydryl group.
Therefore, option (B) is correct.
Explanation of Solution
Reason for the correct statement:
Sulfhydryl group is the functional group that comprises of a molecule of sulfur. Hence, the given structure does not have a sulfhydryl group.
Option (B) is given as “sulfhydryl”.
The “functional group that is not present in the given molecule is sulfhydryl group”, it is the right answer.
Hence, the option (B) is correct.
Reasons for the incorrect statements:
Option (A) is given as “carboxyl”.
The carboxyl functional group is present in the given molecule. So, it is a wrong answer.
Option (C) is given as “hydroxyl”.
The hydroxyl functional group is present in the given molecule. So, it is a wrong answer.
Option (D) is given as “amino”.
The amino group is present in the given molecule. So, it is a wrong answer.
Hence, options (A), (C), and (D) are incorrect.
The functional groups such as carboxyl, hydroxyl, and amino are present in the molecule, whereas the sulfhydryl group is absent in the given molecule.
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