Question

Which of the following compound has all the four types (1°, 2°, 3° and 4°) of carbon atoms?

• A. 2,3,4-Trimethylpentane
• B. neo-Pentane
• C. 2,2,4-Trimethylpentane
• D. None of the three

Hint:

Check carbon degree by counting directly bonded carbon atoms.

Answer 1

The Correct Option is A

Step 1: In 2,3,4-trimethylpentane: - Terminal CH₃ groups → 1° carbons - Chain CH₂ → 2° carbon - Substituted CH → 3° carbon - Central carbon attached to four carbons → 4° carbon
Step 2: Hence all four types are present.