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.
- 908questions
- 26topics
- 9exams covered
- Freeno plans or paywalls
Chemistry in India
Practise chemistry with the exams you can take in India.
Where do you want to start?
- 596 questions · 14 topicsPhysical chemistryThe mole, solutions, gases, equilibrium and rates: the calculations of chemistry.Mole concept · Solutions · States of matter
- 242 questions · 8 topicsOrganic chemistryCarbon compounds, their groups and reactions.Physical and inorganic chemistry · Biomolecules and polymers · Organic chemistry basics
- 70 questions · 4 topicsAtoms and bondingAtomic structure, the periodic table and how atoms bond.Chemical bonding · Atomic structure · Periodic properties
The most practised topics.
Each topic has its own list of questions with explanations. Pick the exam you are preparing for.
Mole concept
108 questions across 7 exams
Solutions
95 questions across 4 exams
States of matter
78 questions across 5 exams
Physical and inorganic chemistry
70 questions across 1 exam
Mole concept, solutions and stoichiometry
44 questions across 1 exam
Chemical kinetics
43 questions across 2 exams
Electrochemistry
43 questions across 2 exams
Biomolecules and polymers
42 questions across 2 exams
Real questions, worked answers.
- Mole concept · NEET UGWhat is the molar mass (in g/mol) of NaOH? (H = 1, C = 12, N = 14, O = 16, Na = 23, S = 32, Ca = 40)See the answer and explanation →
- Solutions · JEE Main3 mol of a solute is dissolved to make 1 L of solution. What is the molarity (in mol/L)?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 →
Practise it for real.
- AP Chemistry Practice Test 126 questions · 40 min
- Cambridge A-Level Chemistry Practice Test 130 questions · 45 min
- Cambridge IGCSE Chemistry Practice Test 130 questions · 45 min
- CBSE Class 12 Chemistry Practice Test 130 questions · 45 min
- IB Chemistry Practice Test 130 questions · 45 min
- JEE Main Chemistry Practice Test 125 questions · 45 min
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 JEE Main, NEET UG, WBJEE, JEE Advanced, CBSE Class 12, Cambridge IGCSE and more. There are 908 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.