If heat be exchanged in a reversible manner, which of the following property of the working substance will change accordingly_________________?

A. Temperature
B. Enthalpy
C. Internal energy
D. Entropy

An actual engine is to be designed having same efficiency as the Carnot cycle. Such a proposition is___________________?

A. Feasible
B. Impossible
C. Possible
D. Possible, but with lot of sophistications

In a Carnot cycle, heat is transferred at_______________________?

A. Constant pressure
B. Constant volume
C. Constant temperature
D. Constant enthaply

An adiabatic wall is one which__________________?

A. Prevents thermal interaction
B. Permits thermal interaction
C. Encourages thermal interaction
D. Discourages thermal interaction

Compressed air coming out from a punctured football___________________?

A. Becomes hotter
B. Becomes cooler1
C. Remains at the same temperature
D. May become hotter or cooler depend-ing upon the humidity of the surround¬ing air

During throttling process___________________?

A. Heat exchange does not take place
B. No work is done by expanding steam
C. There is no change of internal energy of steam
D. All of the above

A sudden fall in the barometer reading is a sign of approaching________________?

A. Fine weather
B. Rains
C. Storm
D. Cold wave

Calorie is a measure of

A. Specific heat
B. Quantity of heat
C. Thermal capacity
D. Entropy

Barometric pressure is equal to_____________________?

A. 760 mm hg
B. Zero mm hg
C. 735.6 mm hg
D. 1 mm hg

The first law of thermodynamics is the law of_________________?

A. Conservation of mass
B. Conservation of energy
C. Conservation of momentum
D. Conservation of heat