Chapter Exam

Unit 4: States of Matter — Online MCQ Test

Q: Which gas law states that at constant temperature, the volume of a fixed amount of gas is inversely proportional to its pressure?

Answer: B. Boyle's law — Boyle's law gives the inverse relation between pressure and volume when temperature is constant.

Q: Which of the following is the correct ideal gas equation?

Answer: A. PV = nRT — The ideal gas equation combines the basic gas laws and relates pressure, volume, amount of gas, and temperature.

Q: A gas occupies 4.0 L at 2.0 atm pressure. If temperature is constant, what is its volume at 1.0 atm?

Answer: C. 8.0 L — Using Boyle's law, P1V1 = P2V2. Halving the pressure doubles the volume, so the new volume is 8.0 L.

Q: At the same temperature and pressure, 1 mole of any gas occupies approximately 22.4 L at:

Answer: A. 0°C and 1 atm — One mole of an ideal gas occupies 22.4 L at standard temperature and pressure, i.e., 0°C and 1 atm.

CHEMISTRY · CLASS 11 INTERMEDIATE 1 YEAR · Telangana State Board

Practice Unit 4: States of Matter with a free chapter-wise online MCQ test for Telangana State Board CLASS 11 INTERMEDIATE 1 YEAR CHEMISTRY. This chapter covers: This chapter details gas laws including Boyle law Charles law Gay-Lussac law Avogadro law ideal gas equation and Dalton law of partial pressures. Students study kinetic molecular t.... AI-generated questions from basic to board-exam level, with instant results and explanations.

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Unit 4: States of Matter — Important Questions & Answers (FAQ)

Frequently asked questions from Telangana State Board CLASS 11 INTERMEDIATE 1 YEAR CHEMISTRY — Unit 4: States of Matter, with answers and explanations. These are sample questions; the exam has its own separate question set.

Which gas law states that at constant temperature, the volume of a fixed amount of gas is inversely proportional to its pressure?

A. Charles' law
B. Boyle's law ✓
C. Avogadro's law
D. Gay-Lussac's law

Answer: B. Boyle's law
Boyle's law gives the inverse relation between pressure and volume when temperature is constant.

Which of the following is the correct ideal gas equation?

A. PV = nRT ✓
B. P/T = constant
C. V/T = constant
D. P1V1 = P2V2

Answer: A. PV = nRT
The ideal gas equation combines the basic gas laws and relates pressure, volume, amount of gas, and temperature.

A gas occupies 4.0 L at 2.0 atm pressure. If temperature is constant, what is its volume at 1.0 atm?

A. 2.0 L
B. 4.0 L
C. 8.0 L ✓
D. 16.0 L

Answer: C. 8.0 L
Using Boyle's law, P1V1 = P2V2. Halving the pressure doubles the volume, so the new volume is 8.0 L.

Which of the following is NOT an assumption of the kinetic molecular theory of gases?

A. Gas molecules are in continuous random motion
B. The volume of gas molecules is negligible
C. There are strong attractive forces between gas molecules ✓
D. Collisions between molecules are perfectly elastic

Answer: C. There are strong attractive forces between gas molecules
Kinetic molecular theory assumes intermolecular forces are negligible except during collisions, not strong.

At the same temperature and pressure, 1 mole of any gas occupies approximately 22.4 L at: