In the previous blgopost we have discussed on 3 MCQ questions on Organic Chemistry that came out in 2008 GCE O Levels Chemistry Exams. Let’s continue with the rest of the MCQ questions that are related to Organic Chemistry.
Question 1: under sub-topic “Carboxylic Acids”
The reaction between a carboxylic acid, CxHyCO2H, and an alcohol, CnH2n+1OH, produces an ester.
How many hydrogen atoms does one molecule of the ester contain?
A.? y + 2n
B.? y + 2n + 1
C.? y + 2n + 2
D.? y + 2n + 3
PS: Tricky question that ALL Pure Chemistry students must know how to answer
Question 2: under sub-topic “Carboxylic Acids”
The diagram below shows the structure of ethanoic acid, a carboxylic acid.
How many moles of ethanoic acid react with one mole of magnesium?
Question 3: under sub-topic “Alkenes”
The molecular structure of three hydrocarbons are shown below.
Which statement about these hydrocarbons is correct?
A.? All three hydrocarbons are isomers of propene
B.? R is a branched alkene
C.? S is but-1-ene
D.? T is an isomer of butene
PS: Do attempt the questions and leave your answers & suggested reasoning in the ?Leave A Reply? section below
PPS: If you would like more Tips, Notes and Questions on Organic Chemistry, please check out the archives (older blogposts) by CLICKING HERE
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