Free Kinetic Molecular Theory MCQs with Answers
122 Kinetic Molecular Theory MCQs from Chemistry, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Kinetic molecular theory explains gases as rapidly moving particles separated by large distances, with negligible volume and negligible intermolecular attraction in the ideal model. It relates temperature to average kinetic energy and explains gas pressure, Boyle's and Charles's laws, diffusion, effusion and the conditions under which real gases deviate from ideal behavior.
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122 questions · page 4 of 7
- A. Berzelius
- B. Boltzmann
- C. Bernoulli
- D. Maxwell
Explanation: It was first proposed by Bernoulli and then enhanced by Maxwell. In order to illustrate the behaviour of gases quantitatively, Bernoulli…
Correct answer: Bernoulli- A. Solids
- B. Liquids
- C. Gases
- D. Both B and C
Explanation: Liquids and gases consist of molecules that can collide among themselves and exchange energy.
Correct answer: Both B and C- A. Effusion
- B. Diffusion
- C. Mixing
- D. None of these
Explanation: Diffusion is a process by which particles move from an area of high concentration to an area of low concentration.
Correct answer: Diffusion- A. Stable
- B. Metastable
- C. Parastable
- D. Prestable
Explanation: The magnetic field create low energy plasma which create molecules of Meta stable state.
Correct answer: Metastable- A. Protons
- B. Electrons
- C. Neutrons
- D. All of these
Explanation: Option B is correct as plasma is a substance that is superheated to such an extent that it'd electrons are ripped from it, creating an…
Correct answer: Electrons- A. 6 times
- B. 4 times
- C. One fourth
- D. One eighth
Explanation: rateA/rateB = √molar mass B/molar mass A So, √2÷32 = √0.0625 = 0.25 or 1/4
Correct answer: One fourth- A. Low temperature
- B. High temperature
- C. Low pressure
- D. High pressure
Explanation: Plasma is difficult to maintain at low formed at high temperatures. Actually, plasma is there is vigorous collision between atoms and…
Correct answer: Low temperature- A. HCl
- B. NH3
- C. Equally
- D. Both
Explanation: The gas that travels faster will depend on the conditions of the experiment.
Correct answer: NH3- A. Atmosphere
- B. Liquid
- C. Container
- D. Gas
Explanation: If the manometer is a closed-tube manometer, then typically the side with the mercury will face the atmosphere, and the other side will…
Correct answer: Atmosphere- A. Auroras
- B. Flames
- C. Bolts
- D. All of these options are correct
Explanation: On Earth, plasma occurs in a few limited places like lightning bolts, flames, auroras, and fluorescent lights.
Correct answer: All of these options are correct71. An unknown gas diffuses 5 times slower than that of H2. The molecular mass of the unknown gas is:
- A. 50
- B. 10
- C. 15
- D. 25
Explanation: According to Graham's law of diffusion of gases, the rate of diffusion is inversely proportional to the square root of molar masses of…
Correct answer: 50- A. HCL
- B. CO2
- C. C2H2
- D. C2H6
Explanation: Graham Law states Rate of Diffusion ∝ 1/√(MolecularMass) Option A: HCl has molecular mass 36g Option B: CO2 has molecular mass 44g Option…
Correct answer: C2H2- A. High temperature and low pressure
- B. Low temperature and high pressure
- C. At standard temperature and pressure
- D. At high temperature and high pressure
Explanation: The effect of intermolecular forces is much more prominent at low temperatures because the molecules have less kinetic energy to overcome…
Correct answer: Low temperature and high pressure- A. Gases are considered to be composed of minute discrete particles called molecules.
- B. The molecules move in straight line.
- C. The pressure of gas is produced due to the collision of molecules with the wall of container.
- D. The volume occupied by the gas molecules is negligible as compared to the the total volume of the gas.
Explanation: This is because when you increase the pressure, the particles are closer together.
Correct answer: The volume occupied by the gas molecules is negligible as compared to the the total volume of the gas.- A. Diffusion of gas molecules
- B. Effusion of gas molecules
- C. Volume of gas
- D. Temperatue of gas
Explanation: Diffusion is the mixing of molecules with one another. Molecules of the scent fill the spaces between air molecules and the molecules of…
Correct answer: Diffusion of gas molecules- A. 120 ms-1
- B. 300 ms-1
- C. 600 ms-1
- D. 900 ms-1
Explanation: The Clausius Kinetic Energy Equation is PV=1/3Nmc2 where c is the rms speed Because we have given values of Pressure and Density so we…
Correct answer: 300 ms-1- A. 59.43 cm
- B. 52.12 cm
- C. 34.37 cm
- D. 49.23 cm
Explanation: By understanding the GRAHAM'S LAW OF DIFFUSION and it's numerical type questions this Question is very easy to solve.
Correct answer: 59.43 cm- A. 10 seconds: He
- B. 20 seconds: O2
- C. 25 seconds: CO
- D. 35 seconds: CO2
Explanation: The key to solve this question is the understanding GRAHAM's LAW OF DIFFUSION which states that: The rate of diffusion or effusion of a…
Correct answer: 20 seconds: O2- A. 0.6 ms-1
- B. 0.3 ms-1
- C. 0.9 ms-1
- D. 3 ms-1
Explanation: This is a numerical based question so review its soultion carefully.
Correct answer: 0.6 ms-1- A. I, II & III only
- B. I, II & IV only
- C. I & II only
- D. I, II, III & IV all
Explanation: This option is correct, as explained below. Statement IV is correct because the rate of effusion is inversely proportional to square root…
Correct answer: I, II & IV only