Thermodynamics Test

Result

Thermodynamics Test - 36

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Weekly Quiz Competition

Question 1
4 / -1

A monoatomic ideal gas, initially at temperature T₁ is enclosed in a cylindes fitted with a frictionless piston. The gas is allowed to expand adiabatically to a temperature T₂ releasing the piston suddenly. If L₁ and L₂ given by the lengths of the gas colum be fore and afters expansion respectively, then then T₁/T₂ is given by

A

B

C

D

Solution
Question 2
4 / -1

Starting with the same intial Conditions, an ideal gas expands from Volume V₁ and V₂ in three different ways. The Work done by the gas is W₁ if the process is purely isothermal, W₂ if purely isobasic and W₃ if purely adiabatic Then

A
W₂ > W₁ > W₃

B
W₂ > W₃ > W₁

C
W₁ > W₂ > W₃

D
W₁ > W₃ > W₂
Question 3
4 / -1

In a given process on an ideal gas dw = 0 and dQ < 0. Then for the gas

A
the volume will increase

B
the pressure will semain constant

C
the temperature will decrease

D
the temperature will increase
Question 4
4 / -1

A
7 min

B
6 min 2s

C
14 min

D
8 min 20 S

Solution
Question 5
4 / -1

70 calorie of heat are required to raise the temperature of 2 mole of an ideal gas at constant pressure from 30^oC to 35^oC. The amount of heat required to raise the temperature of the same gas through the same range at constant volume is .................. calorie.

A
50

B
30

C
70

D
90

Solution
Question 6
4 / -1

Two cylinders A and B fitted with piston contain equal amounts of an ideal diatomic gas at 300 k. The piston of A is free to move, While that of B is held fixed. The same amount of heat is given to the gas in each cylindes. If the rise in temperature of the gas in A is 30K, then the rise in temperature of the gas in B is.

A
30 K

B
42 K

C
18 K

D
50 K

Solution
Question 7
4 / -1

The work of 62.25 KJ is performed in order to compress one kilo mole of gas adiabatically and in this process the temperature of the gas increases by 5^oC The gas is_ R = 8-3 J/molK

A
triatomic

B
monoatomic

C
diatomic

D
a mixture of monoatomic and diatomic

Solution
Question 8
4 / -1

Cp and Cv denote the specific heat of oxygen per unit mass at constant Pressure and volume respectively, then

A

B

C

D

Solution
Question 9
4 / -1

When a System is taken from State i to State f along the path iaf, it is found that Q = 70 cal and w = 30 cal, along the path ibf. Q = 52cal the path ibf is

A
6 cal

B
12 cal

C
24 cal

D
8 cal

Solution
Question 10
4 / -1

µ moles of a gas filled in a containes at temperature T is in equilibrium inidially - If the gas is compressed slowly and is thesmally to half its initial volume the work done by the atmosphere on the piston is

A

B

C

D

Solution