Question 1
Section A - Easy Questions
Correct Answer: Option (3)
Kinetic Theory NEET MCQs
Formula sheet, MCQs, answers, and detailed solutions for NEET Physics preparation.
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Kinetic Theory Formula Sheet
Ideal Gas EquationPV = nRT = NkBT
n = m/M, kB = R/NA
n = m/M, kB = R/NA
Number DensityNumber density = N/V
Mass density ρ = mass/volume
Mass density ρ = mass/volume
Pressure from Kinetic TheoryP = (1/3)ρcrms2
P = (1/3)(Nm/V)<c2>
P = (1/3)(Nm/V)<c2>
Average Translational K.E.Per molecule = (3/2)kBT
Per mole = (3/2)RT
Per mole = (3/2)RT
Energy Densityu = total translational K.E./volume
P = (2/3)u
P = (2/3)u
RMS Speedcrms = √(3RT/M)
crms = √(3kBT/m)
crms = √(3kBT/m)
Average Speedcavg = √(8RT/πM)
cavg = √(8kBT/πm)
cavg = √(8kBT/πm)
Most Probable Speedcmp = √(2RT/M)
cmp = √(2kBT/m)
cmp = √(2kBT/m)
Speed Ratiocrms : cavg : cmp
= √3 : √(8/π) : √2
= √3 : √(8/π) : √2
Gas LawsBoyle: PV = constant
Charles: V/T = constant
Gay-Lussac: P/T = constant
Charles: V/T = constant
Gay-Lussac: P/T = constant
Combined Gas LawP1V1/T1 = P2V2/T2
for fixed mass
for fixed mass
Dalton's LawTotal pressure of mixture:
P = P1 + P2 + P3 + ...
P = P1 + P2 + P3 + ...
Degrees of FreedomEnergy per molecule = (f/2)kBT
Energy per mole = (f/2)RT
Energy per mole = (f/2)RT
Internal EnergyU = (f/2)nRT
for an ideal gas
for an ideal gas
Specific Heat at Constant VolumeCV = (f/2)R
per mole
per mole
Specific Heat at Constant PressureCP = CV + R
CP = [(f + 2)/2]R
CP = [(f + 2)/2]R
Adiabatic Indexγ = CP/CV
γ = (f + 2)/f = 1 + 2/f
γ = (f + 2)/f = 1 + 2/f
Monatomic Gasf = 3
CV = (3/2)R, CP = (5/2)R
γ = 5/3
CV = (3/2)R, CP = (5/2)R
γ = 5/3
Diatomic GasAt ordinary temperature: f = 5
CV = (5/2)R, CP = (7/2)R
γ = 7/5
CV = (5/2)R, CP = (7/2)R
γ = 7/5
Nonlinear Triatomic GasWithout vibration: f = 6
CV = 3R, CP = 4R
γ = 4/3
CV = 3R, CP = 4R
γ = 4/3
Mixture Internal EnergyUmix = Σ[(fi/2)niRT]
at common temperature
at common temperature
Mixture Molar Heat CapacityCV,mix = Σ(niCV,i)/Σni
CP,mix = CV,mix + R
CP,mix = CV,mix + R
Mean Free Pathλ = 1/[√2 πd2nv]
λ = kBT/[√2 πd2P]
λ = kBT/[√2 πd2P]
Collision Frequencyz = cavg/λ
Collision rate increases with speed and number density
Collision rate increases with speed and number density
Barometric FormulaP = P0e-Mgh/RT
for an isothermal atmosphere
for an isothermal atmosphere
van der Waals Equation(P + an2/V2)(V - nb) = nRT
Critical ConstantsFor one mole:
Vc = 3b, Pc = a/(27b2)
Tc = 8a/(27Rb)
Vc = 3b, Pc = a/(27b2)
Tc = 8a/(27Rb)
Temperature ConversionT(K) = t(°C) + 273.15
Average kinetic energy ∝ absolute temperature
Average kinetic energy ∝ absolute temperature
Section A - Easy Questions
30 Questions
Question 2
Section A - Easy Questions
Correct Answer: Option (1)
Question 3
Section A - Easy Questions
Correct Answer: Option (4)
Question 4
Section A - Easy Questions
Correct Answer: Option (2)
Question 5
Section A - Easy Questions
Correct Answer: Option (2)
Question 6
Section A - Easy Questions
Correct Answer: Option (3)
Question 7
Section A - Easy Questions
Correct Answer: Option (3)
Question 8
Section A - Easy Questions
Correct Answer: Option (2)
Question 9
Section A - Easy Questions
Correct Answer: Option (3)
Question 10
Section A - Easy Questions
Correct Answer: Option (2)
Question 11
Section A - Easy Questions
Correct Answer: Option (4)
Question 12
Section A - Easy Questions
Correct Answer: Option (1)
Question 13
Section A - Easy Questions
Correct Answer: Option (2)
Question 14
Section A - Easy Questions
Correct Answer: Option (1)
Question 15
Section A - Easy Questions
Correct Answer: Option (4)
Question 16
Section A - Easy Questions
Correct Answer: Option (3)
Question 17
Section A - Easy Questions
Correct Answer: Option (1)
Question 18
Section A - Easy Questions
Correct Answer: Option (2)
Question 19
Section A - Easy Questions
Correct Answer: Option (4)
Question 20
Section A - Easy Questions
Correct Answer: Option (2)
Question 21
Section A - Easy Questions
Correct Answer: Option (3)
Question 22
Section A - Easy Questions
Correct Answer: Option (2)
Question 23
Section A - Easy Questions
Correct Answer: Option (4)
Question 24
Section A - Easy Questions
Correct Answer: Option (1)
Question 25
Section A - Easy Questions
Correct Answer: Option (3)
Question 26
Section A - Easy Questions
Correct Answer: Option (2)
Question 27
Section A - Easy Questions
Correct Answer: Option (3)
Question 28
Section A - Easy Questions
Correct Answer: Option (3)
Question 29
Section A - Easy Questions
Correct Answer: Option (4)
Question 30
Section A - Easy Questions
Correct Answer: Option (1)
Section B - Moderate Questions
30 Questions
Question 1
Section B - Moderate Questions
Correct Answer: Option (1)
Question 2
Section B - Moderate Questions
Correct Answer: Option (3)
Question 3
Section B - Moderate Questions
Correct Answer: Option (2)
Question 4
Section B - Moderate Questions
Correct Answer: Option (2)
Question 5
Section B - Moderate Questions
Correct Answer: Option (2)
Question 6
Section B - Moderate Questions
Correct Answer: Option (2)
Question 7
Section B - Moderate Questions
Correct Answer: Option (1)
Question 8
Section B - Moderate Questions
Correct Answer: Option (2)
Question 9
Section B - Moderate Questions
Correct Answer: Option (1)
Question 10
Section B - Moderate Questions
Correct Answer: Option (2)
Question 11
Section B - Moderate Questions
Correct Answer: Option (2)
Question 12
Section B - Moderate Questions
Correct Answer: Option (1)
Question 13
Section B - Moderate Questions
Correct Answer: Option (1)
Question 14
Section B - Moderate Questions
Correct Answer: Option (2)
Question 15
Section B - Moderate Questions
Correct Answer: Option (1)
Question 16
Section B - Moderate Questions
Correct Answer: Option (2)
Question 17
Section B - Moderate Questions
Correct Answer: Option (4)
Question 18
Section B - Moderate Questions
Correct Answer: Option (1)
Question 19
Section B - Moderate Questions
Correct Answer: Option (3)
Question 20
Section B - Moderate Questions
Correct Answer: Option (1)
Question 21
Section B - Moderate Questions
Correct Answer: Option (2)
Question 22
Section B - Moderate Questions
Correct Answer: Option (3)
Question 23
Section B - Moderate Questions
Correct Answer: Option (3)
Question 24
Section B - Moderate Questions
Correct Answer: Option (2)
Question 25
Section B - Moderate Questions
Correct Answer: Option (1)
Question 26
Section B - Moderate Questions
Correct Answer: Option (2)
Question 27
Section B - Moderate Questions
Correct Answer: Option (3)
Question 28
Section B - Moderate Questions
Correct Answer: Option (1)
Question 29
Section B - Moderate Questions
Correct Answer: Option (2)
Question 30
Section B - Moderate Questions
Correct Answer: Option (4)
Section C - Previous Years NEET Questions
22 Questions
Question 1
Section C - Previous Years NEET Questions
Correct Answer: Option (2)
Question 2
Section C - Previous Years NEET Questions
Correct Answer: Option (4)
Question 3
Section C - Previous Years NEET Questions
Correct Answer: Option (2)
Question 4
Section C - Previous Years NEET Questions
Correct Answer: Option (3)
Question 5
Section C - Previous Years NEET Questions
Correct Answer: Option (3)
Question 6
Section C - Previous Years NEET Questions
Correct Answer: Option (4)
Question 7
Section C - Previous Years NEET Questions
Correct Answer: Option (2)
Question 8
Section C - Previous Years NEET Questions
Correct Answer: Option (4)
Question 9
Section C - Previous Years NEET Questions
Correct Answer: Option (2)
Question 10
Section C - Previous Years NEET Questions
Correct Answer: Option (2)
Question 11
Section C - Previous Years NEET Questions
Correct Answer: Option (3)
Question 12
Section C - Previous Years NEET Questions
Correct Answer: Option (2)
Question 13
Section C - Previous Years NEET Questions
Correct Answer: Option (3)
Question 14
Section C - Previous Years NEET Questions
Correct Answer: Option (4)
Question 15
Section C - Previous Years NEET Questions
Correct Answer: Option (1)
Question 16
Section C - Previous Years NEET Questions
Correct Answer: Option (3)
Question 17
Section C - Previous Years NEET Questions
Correct Answer: Option (4)
Question 18
Section C - Previous Years NEET Questions
Correct Answer: Option (2)
Question 19
Section C - Previous Years NEET Questions
Correct Answer: Option (1)
Question 20
Section C - Previous Years NEET Questions
Correct Answer: Option (1)
Question 21
Section C - Previous Years NEET Questions
Correct Answer: Option (1)
Question 22
Section C - Previous Years NEET Questions
Correct Answer: Option (1)
Section D - Assertion - Reason Type Questions
10 Questions
Assertion-Reason answer key: (1) Both Assertion and Reason are true, and Reason is the correct explanation. (2) Both are true, but Reason is not the correct explanation. (3) Assertion is true, but Reason is false. (4) Assertion is false, but Reason is true.
Question 1
Section D - Assertion - Reason Type Questions
Correct Answer: Option (1)
Question 2
Section D - Assertion - Reason Type Questions
Correct Answer: Option (2)
Question 3
Section D - Assertion - Reason Type Questions
Correct Answer: Option (1)
Question 4
Section D - Assertion - Reason Type Questions
Correct Answer: Option (3)
Question 5
Section D - Assertion - Reason Type Questions
Correct Answer: Option (1)
Question 6
Section D - Assertion - Reason Type Questions
Correct Answer: Option (2)
Question 7
Section D - Assertion - Reason Type Questions
Correct Answer: Option (4)
Question 8
Section D - Assertion - Reason Type Questions
Correct Answer: Option (2)
Question 9
Section D - Assertion - Reason Type Questions
Correct Answer: Option (3)
Question 10
Section D - Assertion - Reason Type Questions
Correct Answer: Option (1)
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