Question

Which of these is a saturated hydrocarbon?

• A. Ethane
• B. Ethene
• C. Ethyne
• D. Benzene Correct Answer: (A) Ethane Solution:

Hint:

Remember: \[ \text{Alkanes} \rightarrow \text{Saturated} \] \[ \text{Alkenes and Alkynes} \rightarrow \text{Unsaturated} \] Ethane is an alkane and therefore saturated.

Answer 1

The Correct Option is A

Step 1: Know what saturated means.
A saturated hydrocarbon has only single bonds between its carbon atoms. These are the alkanes.

Step 2: Check each choice.
Ethane ($C_2H_6$) has a single bond. Ethene has a double bond, ethyne has a triple bond, and benzene has a ring with alternating double bonds.

Step 3: Pick the saturated one.
Only ethane has all single bonds, so it is the saturated hydrocarbon.
\[ \boxed{\text{Ethane}} \]