Question

Which of the following organic compounds is an alkyne?

• A. Ethene
• B. Methane
• C. Acetylene
• D. Chloroform

Hint:

General formula of alkyne: C\textsubscript{n}H\textsubscript{2n–2}.

Answer 1

The Correct Option is C

Step 1: Definition.
Alkynes are hydrocarbons with a triple bond.
Step 2: Options.
- Ethene: alkene (double bond).
- Methane: alkane (single bond).
- Acetylene (ethyne): C\textsubscript{2}H\textsubscript{2}, with a triple bond.
- Chloroform: not a hydrocarbon.
Step 3: Conclusion.
So acetylene is an alkyne.