WorksheetsLecture 15
Total questions: 10
Worksheet time: 5mins
Which of the following is not an assumption of the kinetic theory of gases?
Gas molecules move with the same speed, known as the r.m.s. speed
Gas molecules are in constant free random motion
Collisions between gas molecules are perfectly elastic
The size of a gas molecule is negligible compared to the distance between gas molecules
The root-mean square speed of the molecules of a gas in a closed container is v. If the gas is heated at constant volume until the pressure is doubled, what is the r.m.s. speed now?
1/2 v
1/√2 v
√2 v
2 v
Coefficient of linear expansion, Coefficient of area expansion and Coefficient of volume expansion have the unit of....
oC-1
oC
W m-1 oC-1
J m-1 oC-1
Thermal expansion of liquid depends on the expansion of the container that it fills. However, why does liquid overflow after heating?
because container does not expand
because coefficient of volume expansion for liquid is bigger than the container
because liquid and container expand at the same amount
because particles in solid container is more closely packed together than liquid
You have cut a hole in the middle of a large seet of metal. When the sheet is heated, the area of the hole...
Does not change
Always increase
Always decrease
Increase if the hole is not in the exact centre of the sheet
Root mean squared (r.m.s) speed of a gas molecules is directly proportional to _____________ and inversely proportional to ______________.
molar mass ; temperature
temperature ; molar mass
temperature ; pressure
pressure ; temperature
