PHYSICS-Kinetic Theory of Gases Questions and Answers

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The Kinetic Theory of Gases questions with answers topic is a fundamental part of Physics general science often featured in SSC, RRB, NDA, and UPSC exams. It helps learners understand the molecular motion, pressure, and temperature relationship in gases through aptitude questions and answers with explanations. Mastering this concept improves problem-solving speed in numerical and conceptual physics questions. Students can also download aptitude questions with solutions PDF or attempt aptitude test practice online to strengthen their theoretical and practical understanding.

PHYSICS-Kinetic Theory of Gases

Showing 10 of 20 questions

1. What is the relationship between pressure and volume of a gas at constant temperature according to Boyle's law?

  • Directly proportional
  • Inversely proportional
  • No relationship
  • Exponentially related
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2. Which of the following is NOT an assumption of the kinetic theory of gases?

  • Molecules are in random motion
  • Molecules have negligible volume
  • Molecules exert no forces on each other
  • Molecules have zero mass
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3. What happens to the average kinetic energy of gas molecules when temperature is doubled?

  • Doubles
  • Halves
  • Quadruples
  • Remains same
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4. At constant volume, pressure of a gas is proportional to:

  • Volume
  • Temperature
  • Number of molecules
  • Density
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5. The root mean square speed of gas molecules depends on:

  • Pressure only
  • Volume only
  • Temperature and molecular mass
  • Pressure and volume
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6. Which gas law combines Boyle's, Charles' and Gay-Lussac's laws?

  • Avogadro's law
  • Ideal gas equation
  • Van der Waals equation
  • Dalton's law
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7. What is the value of universal gas constant R?

  • 0.0821 L·atm/mol·K
  • 1.987 cal/mol·K
  • 8.314 J/mol·K
  • 62.36 L·torr/mol·K
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8. At absolute zero temperature, what happens to gas molecules?

  • They move fastest
  • Their volume becomes zero
  • Their motion ceases
  • They become liquid
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9. The average kinetic energy of gas molecules is directly proportional to:

  • Volume
  • Pressure
  • Absolute temperature
  • Number of molecules
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10. Which of the following has the same RMS speed at same temperature?

  • O₂ and N₂
  • H₂ and He
  • CO₂ and SO₂
  • N₂ and CO
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