Thermodynamics MCQs

A. An open system of constant composition

B. A closed system of constant composition

C. An open system with changes in composition

D. A closed system with changes in composition

A. dQ = dE + dW

B. dQ = dE – dW

C. dE = dQ + dW

D. dW = dQ + dE

A. More stable

B. Less stable

C. Not at all stable (like nascent O₂)

D. Either more or less stable ; depends on the compound

A. Zero

B. Unity

C. Infinity

D. None of these

A. Isothermal

B. Adiabatic

C. Isobaric

D. Isochoric

A. Decrease in velocity

B. Decrease in temperature

C. Decrease in kinetic energy

D. Energy spent in doing work

A. Isothermal

B. Irreversible

C. Adiabatic

D. Reversible

A. Lewis-Randall rule

B. Statement of Vant-Hoff equation

C. Le-Chatelier’s principle

D. None of these

A. Isothermal

B. Adiabatic

C. Isentropic

D. None of these

A. Decreases

B. Decreases exponentially

C. Increases

D. Remains constant