MCQs: Alkanes, Alkenes & Alkynes

 

MCQs: Alkanes, Alkenes & Alkynes

1. The general formula of alkanes is:
   a) CₙH₂ₙ
   b) CₙH₂ₙ₊₂
   c) CₙH₂ₙ₋₂
   d) CₙHₙ

2. Which of the following is an alkene?
   a) CH₄
   b) C₂H₆
   c) C₂H₄
   d) C₂H₂

3. The general formula of alkynes is:
   a) CₙH₂ₙ₊₂
   b) CₙH₂ₙ
   c) CₙH₂ₙ₋₂
   d) CₙHₙ

4. Which hydrocarbon contains a triple bond?
   a) Alkane
   b) Alkene
   c) Alkyne
   d) Aromatic

5. The simplest alkane is:
   a) Ethane
   b) Methane
   c) Propane
   d) Butane

6. Which of the following is a saturated hydrocarbon?
   a) Ethene
   b) Ethyne
   c) Methane
   d) Propene

7. The molecular formula of ethene is:
   a) C₂H₆
   b) C₂H₄
   c) C₂H₂
   d) C₃H₆

8. Which of the following belongs to the alkyne series?
   a) C₃H₈
   b) C₃H₆
   c) C₃H₄
   d) C₄H₁₀

9. The first member of the alkene series is:
   a) Methene
   b) Ethene
   c) Propene
   d) Butene

10. Which general formula represents unsaturated hydrocarbons?
    a) CₙH₂ₙ₊₂
    b) CₙH₂ₙ
    c) CₙH₂ₙ₋₂
    d) Both (b) and (c)