THERMODYNAMICS MOCK TEST-4

Question No:1

In thermodynamics, the meaning of universe is

[A] only system.
[B] only surroundings.
[C] both system and surroundings.
[D] None of the above

Question No:2

An isolated system is that in which

[A] there is no exchange of energy with surroundings.
[B] there is no exchange of mass.
[C] there is exchange of mass or energy with the surroundings.
[D] there is no exchange of mass or energy with the surroundings.

Question No:3

[A] energy changes Involved In a chemical reaction.
[B] the extent to which a chemical reaction process.
[C] the kinetics of which reaction process.
[D] the feasibility of a chemical reaction.

Question No:4

Human body is an example of

[A] open system.
[B] Isolated system.
[C] closed system.
[D] None of these.

Question No:5

Choose the Incorrect statement.

[A] System and surroundings are always separated by a real or imaginary boundary.
[B] In reversible process, energy exchange in each seep can be reversed
[C] Perfectly isolated system can never be created.
[D] The presence of reactants in a thermos flask or any other closed Insulated vessel is not an example of Isolated system

Question No:6

Which of the following is a closed system?

[B] Pressure cooker
[C] A cup of coffee
[D] Living things

Question No:7

In thermodynamics, a process is called reversible when

[A] System and surroundings change Into each other.
[B] There is no real boundary between system and surroundings.
[C] The surrounding is always in equilibrium with the system.
[D] The system changes into surroundings spontaneously.

Question No:8

Which of the following statements is false?

[A] Work is a state function.
[B] Temperature is a state function.
[C] Change in state is completely defined when the initial and final states are specified.
[D] Work appears at the boundary of the system.

Question No:9

Which of the following are not state functions?

[A] q + w
[B] q
[C] w
[D] H – TS

Question No:10

Which is an extensive property of the system?

[A] Volume
[B] Temperature
[C] Refractive index
[D] Density

Question No:11

Identify die intensive property from the following?

[A] Volume
[B] Entropy
[C] Enthalpy
[D] Temperature

Question No:12

Which one of the following statement is false?

[A] Work is a state function.
[B] Temperature is also a state function.
[C] Change in the state is completely defined when the initial and final states are specified.
[D] None of the above.

Question No:13

A system is changed from state A to state B by one path and from B to A by another path. If ΔU1 and ΔU 2 are the corresponding changes In Internal energy then

[A] ΔU1 + ΔU 2 =+ve
[B] ΔU 1 + ΔU 2 = -ve
[C] ΔU 1 + ΔU 2 – 0
[D] None of the above

Question No:14

Which are extensive properties?

[A] V and El
[B] V and T
[C] V and C P
[D] P and T

Question No:15

Which of following is/are state function?

[A] q
[B] q – w
[C] $$\frac{q}{w}$$
[D] q + w

Question No:16

In which of the following pairs both properties are Intensive?

[A] Pressure, Temperature
[B] Density, volume
[C] Temperature, Density
[D] Pressure, Volume

Question No:17

Assertion: Work and Internal energy are not state functions.
Reason: The sum of q t w is a state function.

[A] Both A and R are true and R Is the correct explanation of A.
[B] Both A and R are true but R Is not the correct explanation of A.
[C] A is true but R is false.
[D] Both A and R are false

Question No:18

Assertion: Mass and volume are extensive properties.
Reason: $$\frac{ Mass}{ volume }$$ is also an extensive property Volume (parameter).

[A] Both A and R are true and R is the correct explanation of A.
[B] Both A and R are true but R is not the correct explanation of A,
[C] A is true but R is false.
[D] Both A and R are false