Subjects
Chemistry practice, free.
Solutions, gases, the mole, equilibrium, atoms and bonding, from school and entrance exams. Every question has an explanation, and the tests are timed like the real thing.
- 264questions
- 17topics
- 4exams covered
- Freeno plans or paywalls
Chemistry in Pakistan
Practise chemistry with the exams you can take in Pakistan.
Where do you want to start?
- 171 questions · 8 topicsPhysical chemistryThe mole, solutions, gases, equilibrium and rates: the calculations of chemistry.Physical Chemistry: Moles, Solutions and Stoichiometry · States of matter · Mole concept
- 67 questions · 6 topicsOrganic chemistryCarbon compounds, their groups and reactions.Organic Chemistry and Industrial Materials · Organic Chemistry and Industrial Processes · Organic chemistry basics
- 26 questions · 3 topicsAtoms and bondingAtomic structure, the periodic table and how atoms bond.Periodic Table, Bonding and Shapes · Periodic properties · Chemical bonding
The most practised topics.
Each topic has its own list of questions with explanations. Pick the exam you are preparing for.
Physical Chemistry: Moles, Solutions and Stoichiometry
74 questions across 2 exams
States of matter
35 questions across 2 exams
Mole concept
18 questions across 2 exams
Organic Chemistry and Industrial Materials
17 questions across 1 exam
Periodic Table, Bonding and Shapes
16 questions across 2 exams
Organic Chemistry and Industrial Processes
14 questions across 2 exams
Equilibrium, Electrochemistry and Energetics
10 questions across 2 exams
Equilibrium and kinetics
10 questions across 2 exams
Real questions, worked answers.
- Physical Chemistry: Moles, Solutions and Stoichiometry · ECAT PakistanHow many moles are there in 32 g of CH₄? (molar mass 16 g/mol)See the answer and explanation →
- States of matter · Cambridge IGCSEA gas at 4 atm occupies 6 L. At constant temperature, what is its pressure (in atm) when the volume is compressed to 3 L?See the answer and explanation →
- Mole concept · Cambridge IGCSEWhat is the molar mass (in g/mol) of H 2SO 4? (H = 1, C = 12, N = 14, O = 16, Na = 23, S = 32, Ca = 40)See the answer and explanation →
Practise it for real.
Chemistry in your exam.
How to practise chemistry.
- 1
Balance the equation first
Most mole and mass questions fall apart when the equation is not balanced. Do it before any numbers.
- 2
Write the units and the formula you use
Moles, grams, litres and concentration are easy to mix up. Units on every line keep you honest.
- 3
Learn trends as patterns
Periodic trends are a few rules, not a long list. Learn why they go up or down across a period and down a group.
- 4
Do a rough check
Ask whether the answer is the right size. A negative concentration or a mass larger than you started with means a slip.
- 5
Redo your mistakes after a week
Repeat the questions you got wrong after a few days. That is when a method either sticks or fades.
Questions, answered.
- Is the chemistry practice really free?
- Yes. Every question, explanation, mock test and flashcard deck is free, with no plans or paywalls.
- Which exams does it cover?
- Chemistry questions from ECAT Pakistan, MDCAT Pakistan, Cambridge IGCSE, Cambridge A-Level. There are 264 chemistry questions on this page's list today.
- Does every question have an explanation?
- Yes. Each question has an explanation with the working or the key idea, and you can open any question on its own page.
- Can I take a timed test?
- Yes. The mock tests below run on a real timer and show a full review with explanations at the end.