CIE iGCSE Co-Ordinated Science C11.6 Alcohols Exam Style Questions Paper 2
Question
During fermentation, an organic liquid and a colourless gas are produced.
Which row identifies a use for the liquid and describes the result of a test on the colourless gas?
▶️Answer/Explanation
Ans : C
Question
The flow chart shows some chemical substances and processes
Which row identifies compound X and process Y?
▶️Answer/Explanation
Ans :A
Question
Four molecules are shown. Which structure represents ethanol?
▶️Answer/Explanation
Answer: A
Explanation: Ethanol has the chemical formula C₂H₅OH, and Structure A correctly represents this molecule.
Question
What reacts with ethene to form ethanol?
A. bromine
B. hydrogen
C. oxygen
D. steam
▶️Answer/Explanation
Answer: D
Explanation: Ethene reacts with steam (water) in the presence of a catalyst (phosphoric acid) to form ethanol. This is a hydration reaction.