Thermodynamics MCQs

A. Increase

B. Decrease

C. No change

D. None of these

A. Virial co-efficients are universal constants

B. Virial co-efficients

C. Virial co-efficients are function of temperature only

D. For some gases, Virial equations and ideal gas equations are the same

A. Carnot

B. Air

C. Absorption

D. Vapour-ejection

A. Increase

B. Decrease

C. Not alter

D. None of these

A. Zeroth

B. First

C. Second

D. Third

A. Free expansion of a gas

B. Compression of air in a compressor

C. Expansion of steam in a turbine

D. All of the above

A. Its internal energy (U) decreases and its entropy (S) increases

B. U and S both decreases

C. U decreases but S is constant

D. U is constant but S decreases

A. Vapour pressure is relatively low and the temperature does not vary over wide limits

B. Vapour obeys the ideal gas law and the latent heat of vaporisation is constant

C. Volume in the liquid state is negligible compared with that in the vapour state

D. All of the above

A. Compressibility

B. Work done under adiabatic contition

C. Work done under isothermal condition

D. Co-efficient of thermal expansion

A. Increases

B. Decreases

C. Remains unchanged

D. May increase or decrease ; depends on the substance