Carbon Compounds Practice Questions
SPM (Malaysia) · SPM Chemistry · 145 free MCQs with instant results and detailed explanations.
145
Total
41
Easy
73
Medium
31
Hard
Start Practicing Carbon Compounds
Take a timed quiz or customize your practice session
Sample Questions from Carbon Compounds
Here are 10 sample questions. Start a quiz to get randomized questions with scoring.
Q1
Easy
Which of the following is a characteristic property of carbon compounds?
A.
They are generally soluble in water.
B.
They usually have high melting and boiling points.
C.
They can form multiple covalent bonds.
D.
They are typically ionic in nature.
Show Answer & Explanation
Correct Answer: C
Carbon compounds can form multiple covalent bonds due to carbon's ability to share electrons with other atoms, allowing it to create double and triple bonds.
Q2
Easy
Which of the following carbon compounds is classified as an alkene?
A.
Ethane
B.
Propene
C.
Butane
D.
Hexane
Show Answer & Explanation
Correct Answer: B
Propene is an alkene because it contains a carbon-carbon double bond, which is the defining feature of alkenes.
Q3
Easy
Which of the following statements about saturated hydrocarbons is true?
A.
They contain at least one double bond.
B.
They are the most reactive type of hydrocarbon.
C.
They contain only single bonds between carbon atoms.
D.
They are incapable of undergoing combustion.
Show Answer & Explanation
Correct Answer: C
Saturated hydrocarbons consist exclusively of single bonds between carbon atoms, which makes them less reactive than unsaturated hydrocarbons.
Q4
Medium
In the combustion of propane (C3H8), which of the following is the correct balanced equation?
A.
C3H8 + 5O2 → 3CO2 + 4H2O
B.
C3H8 + 3O2 → 3CO + 4H2O
C.
C3H8 + 4O2 → 3CO2 + 6H2O
D.
C3H8 + 4O2 → 2CO2 + 4H2O
Show Answer & Explanation
Correct Answer: A
The complete combustion of propane results in carbon dioxide and water, and the balanced equation is C3H8 + 5O2 → 3CO2 + 4H2O.
Q5
Medium
Which of the following compounds is an example of an alkene?
A.
C2H4
B.
C3H8
C.
C4H10
D.
C6H12
Show Answer & Explanation
Correct Answer: A
C2H4 is an alkene because it contains a carbon-carbon double bond, while the other options are alkanes with only single bonds.
Q6
Medium
What is the primary product when ethene reacts with bromine water?
A.
Bromethane
B.
Ethane
C.
Dibromoethane
D.
Bromine gas
Show Answer & Explanation
Correct Answer: C
When ethene reacts with bromine water, bromine adds across the double bond resulting in dibromoethane as the primary product.
Q7
Medium
Which polymer is formed from the polymerization of ethylene?
A.
Polystyrene
B.
Polyethylene
C.
Polyvinyl chloride
D.
Polypropylene
Show Answer & Explanation
Correct Answer: B
Polyethylene is formed from the polymerization of ethylene (C2H4), making it one of the simplest and most common polymers.
Q8
Hard
Which of the following compounds exhibits geometric isomerism due to the presence of a double bond?
A.
Butene (C4H8)
B.
Pentane (C5H12)
C.
Hexanol (C6H14O)
D.
Cyclohexane (C6H12)
Show Answer & Explanation
Correct Answer: A
Butene has a carbon-carbon double bond that allows for the arrangement of groups around it, leading to geometric isomerism (cis/trans forms). Other options do not have this feature.
Q9
Hard
What is the total number of hydrogen atoms in the molecular formula of octanoic acid (C8H16O2)?
A.
16
B.
18
C.
14
D.
20
Show Answer & Explanation
Correct Answer: A
The molecular formula C8H16O2 indicates that octanoic acid contains 16 hydrogen atoms, as the 'H' component directly shows the number of hydrogen atoms present.
Q10
Hard
Which of the following compounds has the highest boiling point and why?
A.
Butane (C4H10)
B.
2-Methylpropane (C4H10)
C.
1-Butanol (C4H10O)
D.
Cyclobutane (C4H8)
Show Answer & Explanation
Correct Answer: C
1-Butanol has strong hydrogen bonding due to its hydroxyl (-OH) group, leading to a higher boiling point compared to the others, which primarily exhibit weaker van der Waals forces.
Showing 10 of 145 questions. Start a quiz to practice all questions with scoring and timer.
Practice All 145 Questions →Other SPM (Malaysia) Subjects
Carbon Compounds — SPM (Malaysia) SPM Chemistry Practice Questions Online
This page contains 145 practice MCQs for the chapter Carbon Compounds in SPM (Malaysia) SPM Chemistry. The questions are organized by difficulty — 41 easy, 73 medium, 31 hard — so you can choose the right level for your preparation.
Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit.