NDA Physics
Heat Thermodynamics — Quiz
20 Questions · No Negative Marking
Question 1
The van der Waals equation of state for a real gas is (P + a/V²)(V - b) = RT per mole. The term a/V² corrects for:
AFinite volume of molecules
BIntermolecular attractive forces reducing the
CGravitational effects at high pressure
DKinetic energy of the molecules
Question 2
The work done by an ideal gas in an isothermal expansion from volume V₁ to V₂ at temperature T is:
AnRT(V₂-V₁)
BnRT ln(V₂/V₁)
CP(V₂-V₁)
DZero (isothermal means no work)
Question 3
For an adiabatic process of an ideal gas, PVγ = constant. The work done in adiabatic expansion from (P₁,V₁) to (P₂,V₂) is:
AnCvΔT (= -ΔU since Q=0)
BP₁V₁ - P₂V₂
C(P₁V₁ - P₂V₂)/(γ-1)
DnCpΔT
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