A closed system is one in which_________________________?

A. Mass does not cross boundaries of the system, though energy may do so
B. Mass crosses the boundary but not the energy
C. Neither mass nor energy crosses the boundaries of the system
D. Both energy and mass cross the boundaries of the system

Which of the following can be regarded as gas so that gas laws could be applicable, within the commonly encountered temperature limits ?

A. 02, n2, steam, c02
B. Oz, n2, water vapour
C. S02, nh3, c02, mositure
D. 02, n2, h2, air

General gas equation is____________________?

A. Pv=nrt
B. Pv=mrt
D. Pv = c
C. Pv=kirt

According to Gay-Lussac law for a perfect gas, the absolute pressure of given mass varies directly as____________________?

A. Temperature
B. Absolute
C. Absolute temperature, if volume is kept constant
D. Volume, if temperature is kept constant

The unit of length in S.I. units is________________?

A. Meter
B. Centimeter
C. Kilometer
D. Millimeter

Which of the following laws is applicable for the behavior of a perfect gas__________________?

A. Boyle’s law
B. Charles’law
C. Gay-lussac law
D. All of the above

The unit of time in S.I. units is__________________?

A. Second
B. Minute
C. Hour
D. Day

Which of the following variables controls the physical properties of a perfect gas_________________?

A. Pressure
B. Temperature
C. Volume
D. All of the above

The property of a material which enables it to resist fracture due to high impact loads is known as__________________?

A. Elasticity
B. Endurance
C. Strength
D. Toughness

Guest’s theory of failure is applicable for following type of materials_________________?

A. Brittle
B. Ductile
C. Elastic
D. Plastic