Exam-Style Online Test | Class 11: States Of Matter Test

Class 11 Chemistry — Chapter 5: States of Matter Online Test

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Class 11 Chemistry: States of Matter Online Test (Paper 1)

Welcome to Paper 1! This is your foundation to build confidence and get you ready to tackle the challenges ahead.

  • Total Questions: 20
  • Time Allotted: 30 minutes
  • Passing Score: 40%
  • Randomization: No
  • Certificate: No
  • Retake: Allowed
  • Price: 100% Free

Good luck! 👍

1 / 20

1. A rigid vessel at contains mol and mol . An electric spark causes complete reaction . After cooling back to , what is the final pressure?

2 / 20

2. Which property makes supercritical fluids useful as solvents in industry?

3 / 20

3. Which curve best represents the relation between vapour pressure and temperature?

4 / 20

4. What is the critical temperature of CO₂ observed in Andrews’ experiments?

5 / 20

5. The van der Waals constant has which units (for 1 mol gas)?

6 / 20

6. Why is added to pressure in the van der Waals equation?

7 / 20

7. At very low pressure, the compressibility factor of a real gas approaches:

8 / 20

8. If for a gas, it means:

9 / 20

9. If hydrogen () has an RMS speed of 1840 m/s at a given temperature, what is the RMS speed of oxygen () at the same temperature?

10 / 20

10. Which relation connects pressure, volume, and average kinetic energy of molecules?

11 / 20

11. Which constant directly connects molecular kinetic energy with absolute temperature?

12 / 20

12. Which assumption of kinetic theory explains the compressibility of gases?

13 / 20

13. Which of the following statements is correct about Dalton’s law?

14 / 20

14. If 3 L of nitrogen gas contains molecules at constant T and P, how many molecules will 6 L of nitrogen contain?

15 / 20

15. Which statement is true about Avogadro’s number ()?

16 / 20

16. The graph of Gay Lussac’s law (Pressure vs Temperature) is:

17 / 20

17. Which everyday example best demonstrates Charles’ law?

18 / 20

18. Boyle’s law is valid under which condition?

19 / 20

19. Which has stronger intermolecular forces: or ?

20 / 20

20. The correct order of diffusion rate at room temperature is:

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Class 11 Chemistry: States of Matter Online Test (Paper 2)

Welcome to Paper 2! You’ve mastered the basics, and now it’s time to test your understanding with a more challenging set of questions.

Get new questions on each attempt

  • Total Questions: 30
  • Time Allotted: 45 minutes
  • Passing Score: 50%
  • Randomization: Yes
  • Certificate: No
  • Retake: Allowed
  • Price: 100% Free

Good luck! 👍

1 / 30

1. A balloon filled with 2 mol of H₂ and 2 mol of O₂ is at 300 K and 5 atm total pressure. What is the partial pressure of H₂?

2 / 30

2. In human respiration, expansion of the chest cavity decreases pressure inside lungs. Which law explains air entering the lungs?

3 / 30

3. Liquids with stronger intermolecular forces will have:

4 / 30

4. The mathematical expression for Charles’ law is:

5 / 30

5. A gas has volume 6.0 L at 3 atm pressure. What will be its pressure if the volume changes to 2.0 L at constant temperature?

6 / 30

6. Which state has the largest bulk modulus (thus the least compressible)?

7 / 30

7. Which of the following applications is based on surface tension?

8 / 30

8. The critical pressure () of a gas is:

9 / 30

9. Which statement about densities is correct?

10 / 30

10. According to kinetic theory, the average kinetic energy of a molecule of an ideal gas is:

11 / 30

11. Which condition minimizes deviation from ideality caused by both intermolecular forces and molecular volume?

12 / 30

12. The phenomenon of vapour pressure lowering is responsible for:

13 / 30

13. Which of the following equations is used to measure viscosity of liquids using capillary flow?

14 / 30

14. Thermal energy of a system is defined as:

15 / 30

15. At very low pressures, the compressibility factor of real gases approaches unity because:

16 / 30

16. For a van der Waals gas, the compressibility factor at the critical point is:

17 / 30

17. Which of the following mathematical forms correctly represents Boyle’s law?

18 / 30

18. According to Raoult’s law, the relative lowering of vapour pressure is given by:

19 / 30

19. Liquid crystals are best described as:

20 / 30

20. Surface tension decreases with:

21 / 30

21. Which factor is more significant at low pressure?

22 / 30

22. The critical constants () are related to which equation of state?

23 / 30

23. 2 g of H₂ and 16 g of O₂ are kept in the same 10 L vessel at 300 K. Calculate the ratio of their partial pressures.

24 / 30

24. Which property of supercritical fluids is closer to liquids?

25 / 30

25. The constant obtained in Boyle’s law, , depends on:

26 / 30

26. At the same temperature and pressure, which of the following gases will have the same volume if they contain equal number of molecules?

27 / 30

27. Which set of critical constants correctly describes CO₂?

28 / 30

28. Which of the following liquids forms a convex meniscus in a glass capillary?

29 / 30

29. The capillary rise of water is due to:

30 / 30

30. If 3 L of nitrogen gas contains molecules at constant T and P, how many molecules will 6 L of nitrogen contain?

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Class 11 Chemistry: States of Matter Online Test (Paper 3)

Welcome to Paper 3! You’ve warmed up—now it's time to step up your game and conquer the challenge with tougher questions!

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  • Total Questions: 50
  • Time Allotted: 75 minutes
  • Passing Score: 70%
  • Randomization: Yes
  • Certificate: Yes
  • Retake: Allowed
  • Price: 100% Free

Good luck! 👍

1 / 50

1. Which real-life application depends on vapour pressure differences?

2 / 50

2. Which intermolecular force is primarily responsible for the liquefaction of nonpolar gases like and ?

3 / 50

3. Which assumption of kinetic theory best explains why gases have very low densities compared to liquids and solids?

4 / 50

4. Which state of matter has definite volume but no definite shape?

5 / 50

5. If 1 mole of gas occupies 22.4 L at STP, how many liters will 2 moles occupy at the same conditions?

6 / 50

6. Which of the following properties is common to both liquids and gases?

7 / 50

7. Gay Lussac’s law states that for a fixed mass of gas at constant volume:

8 / 50

8. Which factor mainly affects the rate of evaporation of a liquid?

9 / 50

9. The diffusion rate of (M=28) compared to (M=44) is:

10 / 50

10. Thermal energy of a system is defined as:

11 / 50

11. What is the density of at and ? ()

12 / 50

12. Which factor explains the variation in boiling points among different substances?

13 / 50

13. Dalton’s law can be combined with the ideal gas equation to give:

14 / 50

14. Why does the pressure inside a car tire increase when the car is driven for a long distance?

15 / 50

15. Which factor explains why solid (dry ice) sublimes at room temperature?

16 / 50

16. Which of the following molecules will have the strongest dipole–dipole interactions?

17 / 50

17. Which statement is true about Avogadro’s number ()?

18 / 50

18. Which condition is essential for the validity of Gay Lussac’s law?

19 / 50

19. Which type of gas will have a higher value of ?

20 / 50

20. A gas mixture of 5 mol and 3 mol exerts a total pressure of 4 atm. What is the partial pressure of oxygen?

21 / 50

21. Which state of matter results when intermolecular forces greatly exceed thermal energy?

22 / 50

22. Which statement best summarizes the relationship between kinetic energy and temperature?

23 / 50

23. If 5 L of hydrogen reacts with 2.5 L of oxygen at constant T and P, what is the volume of steam formed?

24 / 50

24. Why do liquids evaporate even at temperatures below their boiling point?

25 / 50

25. Which interaction explains the high solubility of salts in water?

26 / 50

26. A scuba tank contains 80% N₂ and 20% O₂ at 10 atm. What is the partial pressure of O₂?

27 / 50

27. A mixture of 2 mol , 3 mol , and 5 mol exerts 9 atm total pressure. The partial pressure of is:

28 / 50

28. Which of the following molecules exhibits dipole–dipole interactions?

29 / 50

29. Why do small insects like water striders walk on water without sinking?

30 / 50

30. The average translational kinetic energy per mole of a gas is given by:

31 / 50

31. Which process explains the formation of dew drops on grass in the early morning?

32 / 50

32. If a gas mixture contains 3 mol of , 1 mol of , and 2 mol of , and total pressure is 6 atm, what is the partial pressure of ?

33 / 50

33. The relation between critical constants and van der Waals constants is:

34 / 50

34. Which of the following applications is based on surface tension?

35 / 50

35. In the above mixture (Q471), what is the partial pressure of N₂?

36 / 50

36. Which property of nematic liquid crystals is primarily exploited in LCD screens?

37 / 50

37. Unit of viscosity in the CGS system is:

38 / 50

38. Which real-life example illustrates Avogadro’s law?

39 / 50

39. Why does high pressure promote liquefaction of gases?

40 / 50

40. Which property enables gases to be stored in large amounts in small steel cylinders?

41 / 50

41. Which property of gases can be predicted using critical constants?

42 / 50

42. If for a real gas, this means:

43 / 50

43. A sample of gas occupies 750 mL at 27°C. At what temperature will it occupy 1000 mL at constant pressure?

44 / 50

44. Why do solids have fixed shape compared to liquids and gases?

45 / 50

45. Why does Dalton’s law fail for real gases at high pressure?

46 / 50

46. A gas has a volume of 4.0 L at 27°C. What will be its volume at 127°C, keeping pressure constant?

47 / 50

47. A 2 L container has 0.50 mol of and 0.50 mol of at 300 K. The total pressure is 24.6 atm. What is the partial pressure of each gas?

48 / 50

48. Which is the main cause of deviation of real gases from ideal behavior at low temperature?

49 / 50

49. Which critical property primarily determines gas storage safety in pressurized cylinders?

50 / 50

50. Which molecule will show stronger London dispersion forces?

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Practice States of Matter MCQs
Download Class 11 Chemistry MCQ Study Bundle

Class 11 Chemistry — Chapter 5: States of Matter Online Test

Welcome to the Class 11 Chemistry: Chapter 5 – States of Matter Online Test page. This test offers a collection of 494 MCQs that cover the essential concepts of the states of matter, including gases, liquids, and solids. The online test is designed to help you strengthen your understanding and master the key topics in this chapter. It is free, aligned with the CBSE/NCERT curriculum, and available for unlimited attempts. Each paper is timed, and you will get instant feedback after each attempt.

Struggling with the gas laws, or trying to understand intermolecular forces? This test is an excellent way to practice and prepare yourself for upcoming exams. Think of this as your personal online mock test for the States of Matter chapter, available anytime on your phone or computer. Whether you’re a beginner or an advanced learner, you can progress through the Easy, Medium, and Hard levels, and track your improvements as you go.

What is this Class 11 Chemistry: States of Matter Online Test?

This page features three different difficulty levels of the MCQ test for Chapter 5:

  • Paper 1 (Easy) — Foundation: 20 questions · 30 min · Pass 40% · Fixed set
  • Paper 2 (Medium) — Mixed: 30 questions · 45 min · Pass 50% · Randomized from a pool of ~494 questions
  • Paper 3 (Hard) — Challenge: 50 questions · 75 min · Pass 70% · Randomized from the same pool + Certificate on pass

Note: Paper 2 and Paper 3 are randomized, so you’ll get a new set of questions on each attempt. The test is timed, and once you submit your answers, you’ll instantly see your score and a review of your responses.

Topics covered in these online tests

This test focuses on essential topics in Chapter 5, which covers the three states of matter and their properties. The main concepts that you will practice include:

  • Properties of Gases — Ideal gas law, gas laws, Boyle’s law, Charles’ law, and real gases
  • Ideal Gas Equation — PV = nRT, applications of the ideal gas equation
  • Liquids — Properties of liquids, viscosity, surface tension, and capillarity
  • Solids — Properties of solids, crystal lattices, and unit cells
  • Intermolecular Forces — Types of forces, dipole-dipole interactions, hydrogen bonding, London dispersion forces
  • Gas Laws & Kinetic Molecular Theory — Kinetic theory of gases, deviations from ideal gas behavior, Maxwell’s distribution of velocities
  • Liquefaction of Gases — Critical temperature, critical pressure, Van der Waals equation of state
  • Real Gases — Compressibility factor, deviations from ideal gas behavior
  • Surface Chemistry — Adsorption, adsorption isotherms, catalysis

How This Exam-Style Online Test Works

Simple Steps: Select a paper → Answer the questions within the time limit → Submit → View your results instantly with a detailed breakdown.

What you’ll experience in this test

  • MCQs: One question with four possible answers (A, B, C, D).
  • Timer on top: Paper 1: 30 minutes • Paper 2: 45 minutes • Paper 3: 75 minutes.
  • Pagination: Typically 10 questions per page. Use navigation to move between questions.
  • Answer Review: After finishing the test, you’ll receive your score, along with the correct answers and detailed explanations.
  • Instant Feedback: Click View Result to see your score, and review the questions you answered incorrectly.
  • Retake Option: Click Restart Test to try again with a new set of questions (Paper 2 & 3).

Note: Share your feedback on the result page after completing the test to help us improve.

Marking & Pass Criteria

  • Scoring: +1 for every correct answer, 0 for incorrect (no negative marking).
  • Passing Marks: Paper 1 — 40% • Paper 2 — 50% • Paper 3 — 70%.
  • Randomization: Paper 2 & Paper 3 will shuffle questions from a pool of ~494 questions. Paper 1 remains fixed.

Who can take this test?

  • Class 11 CBSE students preparing for unit tests, half-yearlies, and final exams.
  • Class 12 bridge students revising basic concepts of States of Matter.
  • JEE/NEET aspirants focusing on understanding gas laws, properties of gases, and real gases for competitive exams.
  • School teachers / tutors needing a ready-to-use, chapter-specific test for homework, practice, or revision.
  • Self-learners and homeschoolers who wish to test their knowledge and improve concepts.

Benefits of this online test

  • Exam-like experience: Get a feel for timed, exam-style questions with real-time feedback.
  • Instant results: Learn from your mistakes immediately after each attempt.
  • Stepped-up difficulty: Start with the basics, progress to intermediate questions, and challenge yourself with harder ones.
  • Unlimited attempts: Practice as often as you like to improve speed and accuracy.
  • Zero cost: No fees or hidden charges — completely free for all students.

How this test can help you study better

  • Step 1 – Initial understanding: Try Paper 1 to check your knowledge on fundamental concepts.
  • Step 2 – Consolidate learning: Move to Paper 2 (randomized) to cover intermediate-level questions.
  • Step 3 – Challenge yourself: Attempt Paper 3 to strengthen exam-readiness with tougher questions.
  • Step 4 – Review mistakes: Revisit wrong answers, learn from them, and improve your accuracy.

Important Notes (read before starting)

  • Do not refresh or close the test tab to avoid losing progress.
  • Best experience: Use a modern browser (Chrome/Edge), stable internet connection, and a distraction-free environment.
  • Allow cookies / local storage for smooth tracking of progress and results.
  • Safety: This test is 100% FREE, and there are no hidden charges.

Additional Practice for Class 11 Chemistry

To continue your preparation, explore the full collection of Class 11 Chemistry MCQs: Class 11 Chemistry Online Test Index or practice all chapters from the Class 11 Chemistry MCQ Collection.

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