Organic Chemistry in Technology is one of 9 topics in the Grade 12 Technical Sciences CAPS syllabus, covered across 3 lessons on Study Vault. Below are real practice questions from this topic with full worked answers.
Sample practice questions
Easy
1. What is the general formula for alkanes?
CnH(2n+2)
CnH2n
CnH(2n-2)
CnH(2n+1)OH
Answer: CnH(2n+2) — Alkanes are saturated hydrocarbons with the general formula CnH(2n+2).
Easy
2. What structural feature distinguishes an alkene from an alkane?
At least one carbon-carbon double bond
An -OH functional group
A -COOH functional group
An extra oxygen atom in the chain
Answer: At least one carbon-carbon double bond — Alkenes are unsaturated hydrocarbons containing at least one carbon-carbon double bond, unlike alkanes which contain only single bonds.
Medium
3. Name the specific atom or group of atoms responsible for the characteristic chemical behaviour of a homologous series.
Answer: functional group — The functional group is the specific atom or group of atoms responsible for the characteristic chemical behaviour of a homologous series.
