JAMB UTMEChemistryOrganic Chemistry2022

Methane (CH₄) belongs to the family of:

AAlkanesCORRECT
BAlkenes
CAlkynes
DAlcohols
AI
Toaster Teacher
Why the answer is A, and why the others tempt you.
**The reasoning** Methane (CH₄) is an **alkane** because it follows the general formula CₙH₂ₙ₊₂ for alkanes. Let's check: if n = 1 (one carbon), then H = 2(1) + 2 = 4 hydrogens. Perfect match! Alkanes are hydrocarbons with **only single bonds** between carbon atoms. Look at methane's structure: one carbon connected to four hydrogens by single bonds (C–H). No double bonds, no triple bonds, no other functional groups. That's the signature of the alkane family (also called **saturated hydrocarbons** or **paraffins**). **Why the wrong options tempt you** - **Alkenes (B)** contain C=C double bonds and follow CₙH₂ₙ (example: ethene, C₂H₄). Methane has no double bond. - **Alkynes (C)** have C≡C triple bonds and follow CₙH₂ₙ₋₂ (example: ethyne, C₂H₂). Methane has no triple bond. - **Alcohols (D)** contain an –OH group (example: methanol, CH₃OH). Methane has no oxygen at all. **Quick takeaway** If every bond is single (C–C or C–H) and it fits CₙH₂ₙ₊₂, it's an alkane — remember: **All Single = Alkane**.
Want this in Pidgin, Yoruba, Igbo or Hausa? Sign up free →

Practice more Chemistry questions

JAMB UTME Chemistry has thousands more questions like this — with Worked answers on every one.