Carbylamine test is not responded by:

Options

A. `C_6H_5NH_2`
B. `(CH_3)_(3)C-NH_2`
C. `C_6H_5CH_2NH_2`
D. `(CH_3)_3N`

Explanation

**Step-by-Step Solution:**

1. **Understanding the Carbylamine Test:**
The Carbylamine test is a chemical test used to identify primary amines. In this test, a primary amine reacts with chloroform (CHCl₃) and a strong base (like potassium hydroxide, KOH) to form a foul-smelling compound called isocyanide.

2. **Identifying Primary Amines:**
A primary amine has the general structure RNH₂, where R is an alkyl or aryl group. In primary amines, the nitrogen atom is bonded to one alkyl or aryl group and two hydrogen atoms.

3. **Analyzing the Options:**
To determine which compound does not respond to the Carbylamine test, we need to analyze each option provided:
- **Option A:** Contains an aryl group (e.g., phenyl) attached to the nitrogen. This is a primary amine and will respond to the test.
- **Option B:** Contains a carbon atom bonded to the nitrogen with two methyl groups and one hydrogen. This is also a primary amine and will respond to the test.
- **Option C:** Contains a carbon atom bonded to the nitrogen with one methyl group and one hydrogen. This is again a primary amine and will respond to the test.
- **Option D:** Contains a nitrogen atom bonded to three methyl groups (i.e., N(CH₃)₃). This is a tertiary amine, which does not have the required structure to respond to the Carbylamine test.

4. **Conclusion:**
Since the Carbylamine test is specific to primary amines, the compound in **Option D** (the tertiary amine) will not respond to the test. Therefore, the answer is **Option D**.

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