CIE iGCSE Co-Ordinated Science C11.2 Naming organic compounds Exam Style Questions Paper 2
Question
Which compound name matches the structure shown? 
▶Answer/Explanation
Ans :B
Question
Which formula represents but-1-ene?
(A) CH$_{3}$CH=CH$_{2}$
(B) CH$_{3}$CH$_{2}$CH$_{2}$CH$_{3}$
(C) CH$_{3}$CH$_{2}$CH=CH$_{2}$
(D) CH$_{3}$CH=CHCH$_{3}$
▶️Answer/Explanation
Ans : C
Question
Which row describes the hydrocarbon CH3CHCH2?
▶️Answer/Explanation
Answer: D
Explanation: The hydrocarbon CH3CHCH2 is an alkene, which has the general formula CnH2n.
Question
Four molecules are shown. Which structure represents ethanol?
▶️Answer/Explanation
Answer: A) \( \text{CH}_3\text{CH}_2\text{OH} \)
Explanation: Ethanol has the molecular formula \( \text{C}_2\text{H}_5\text{OH} \), which corresponds to \( \text{CH}_3\text{CH}_2\text{OH} \).