Gases Set 2 - ilmijazeera

Results

#1. Density of a gas is usually expressed in

kg m3

kg dm3

g dm–3

g cm–3

#2. Units of gas constant R in SI system is:

0.0821 dm3 atm k–1 mol–1

82.1 cm3 atm k–1

8.31 Nm k–1 mol–1

1.987 cal k–1 mol–1

#3. Concept of distribution of velocities among the gas molecules was developed by

Claudius

Maxwell

Boltzman

Vanderwaal

#4. Absolute temperature of gas is proportional to

translational kinetic energy

rotational kinetic energy

vibrational kinetic energy

potential energy

#5. Deviation a gas from ideal behaviour is maximum at

low temperature, low pressure

low temperature, high pressure

high temperature, low pressure

high temperature high pressure

#6. Most ideal gas at room temperature is:

CO2

NH3

SO2

#7. 22.414 dm3 of various ideal gases at STP will have Avogadro’s number of molecules

6.02 x 1023

6.02 x 1024

0.602 x 1023

6.02 x 1022

#8. Gases are ideal at

low pressure and high temperature

low temperature and high pressure

high pressure and high temperature

low pressure and low temperature

#9. The value of compressibility factor for an ideal gas is equal to:

1.5

2.5

#10. An ideal gas obeys

Boyle’s law

Charle’s law

Avogadro’s law

all above

Finish