Question

Which of the following statements is NOT correct?

• A. Primary amines show intermolecular hydrogen bonds.
• B. Tertiary butylamine is a primary amine.
• C. Tertiary amines do not show inter molecular hydrogen bonds.
• D. iso-propylamine is a secondary amine.

Hint:

Classify amines by the number of alkyl groups on nitrogen, not on carbon.

Answer 1

The Correct Option is D

Step 1: Rule:
Look at nitrogen: one R group gives primary, two give secondary, three give tertiary.

Step 2: Apply:
t-Butylamine and isopropylamine each have one R on N, so both are primary. Primary amines have N-H hydrogens and can hydrogen bond; tertiary amines cannot.

Step 3: Result:
Statements (A), (B) and (C) hold, and only (D) fails.

Final Answer:
Statement D is false: isopropylamine is primary. \[ \boxed{\text{(D) }\text{(D) is not correct}} \]