Chapters and topics
- States of Matter and Phase Changes 4 topics · 407 MCQs
- Atomic Structure 3 topics · 321 MCQs
- Chemical Bonding 3 topics · 305 MCQs
- Stoichiometry 3 topics · 333 MCQs
- Energetics 2 topics · 202 MCQs
- Equilibria 1 topic · 101 MCQs
- Acid Base Chemistry 2 topics · 200 MCQs
- Periodic Table and Periodicity 2 topics · 212 MCQs
- Group Properties and Elements 2 topics · 203 MCQs
- Environmental Chemistry 1 topic · 112 MCQs
- Hydrocarbons 2 topics · 217 MCQs
- Empirical Data Collection and Analysis 2 topics · 266 MCQs
- Laboratory and Practical Skills 2 topics · 227 MCQs
Sample Chemistry MCQs
Try these questions, then open the full practice to work through every chapter. Tap “Show the answer” after you choose.
Q1. The liquid or solution that has passed through a filter is called the:
- solvent
- solute
- residue
- filtrate
Show the answer
Answer: D. filtrate
The correct answer is “filtrate”. This is the definition of filtrate.
Q2. An atom of carbon (C) has mass number 12 and atomic number 6. How many neutrons does it contain?
- 12
- 7
- 18
- 6
Show the answer
Answer: D. 6
Neutrons = mass number − atomic number = 12 − 6 = 6.
Q3. Which statement about properties and bonding is correct?
- Pure water is an excellent conductor
- Sugar solution conducts electricity well
- Diamond conducts electricity well
- Ionic compounds conduct electricity when molten or in aqueous solution
Show the answer
Answer: D. Ionic compounds conduct electricity when molten or in aqueous solution
Ionic compounds conduct electricity when molten or in aqueous solution.
Q4. The molecular formula of the structure CH3–CH2–OH is:
- C₃H₆
- C₂H₆O
- COCl₂
- H₂SO₄
Show the answer
Answer: B. C₂H₆O
The correct answer is “C₂H₆O”. Count each type of atom: C₂H₆O.
Q5. Which one of these is endothermic?
- neutralisation of an acid by an alkali
- reaction of sodium with water
- combustion of petrol in a car engine
- thermal decomposition of copper(II) carbonate
Show the answer
Answer: D. thermal decomposition of copper(II) carbonate
The thermal decomposition of copper(II) carbonate takes in heat.
Q6. The reaction involved in burning methane in air is normally:
- reversible
- irreversible
- in dynamic equilibrium
- a physical change
Show the answer
Answer: B. irreversible
The products cannot easily be turned back into the reactants under ordinary conditions.
Practise all over 3,100 questions
Chapter-wise practice with instant answers, timed tests and (with a free account) your progress saved.
Start practising →