Zeroth Law of Thermodynamics

Q. Zeroth law of thermodynamics

1. deals with mass and energy
2. states that if two systems are both in equilibrium with a third system, they are in thermal equilibrium with each other
3. deals with heat engines
4. does not exist

Q.

A Kelvin thermometer and a Fahrenheit thermometer both give the same reading for a certain sample. The corresponding Celsius temperature is

1. $-574{}^{\circ }C$

2. $301{}^{\circ }C$

3. $276{}^{\circ }C$

4. $232{}^{\circ }C$

Q. Three substances are added to a mug to make coffee: coffee at ${65}^{\circ }\text{C}$, milk at ${65}^{\circ }\text{C}$ and sugar. If the sugar is in thermal equilibrium with the coffee, then which of the following is/are true?

1. Heat will be transferred from sugar to milk to reach thermal equilibrium.
2. The sugar is in themal equilibrium with the milk.
3. Heat will be transferred from the coffee to the sugar to reach thermal equilibrium.
4. None of these conclusions are valid.

Q. The equivalence of two systems in thermal equilibrium is represented by the property is

Q. Zeroth law of thermodynamics gives us the concept of

1. Thermal equilibrium
2. All of the above.
3. Mechanical equilibrium
4. Chemical equilibrium

Q. An application of the Zeroth Law of Thermodynamics is

1. thermometer
2. barometer
3. manometer
4. none of the above

Q. "Two systems in thermal equilibrium with a third system are in thermal equilibrium with each other" is the statement of:

1. Zeroth Law of Thermodynamics
2. First Law of Thermodynamics
3. Second Law of Thermodynamics
4. Third Law of Thermodynamics

Q. $300$ gm of water at ${25}^o$C is added to $100$gm of ice at $0^{o}C$ . Final temperature of the mixture is:

1. $-{\frac{5}{3}}^{o}C$
2. $-{\frac{5}{2}}^{o}C$
3. $-5^{o}C$
4. $0^{o}C$

Q. Who formulated the Zeroth law of thermodynamics?

1. Ralph Fowler
2. William Thomson
3. Rudolf Clausius
4. James Maxwell

Q. State zeroth law of thermo dynamics?

Q. 1st law of Thermodynamics can explain

1. Spontaneity of process
2. Perpetual machine of 3rd kind
3. The total energy of an isolated system remains constant
4. Perpetual machine of 2nd kind

Q. Thermo couple is based on the principle of

1. Thomson effect
2. Joule effect
3. Pelteir effect
4. Seebeck effect

Q. Assertion :The zeroth law of thermodynamics was known before law I of thermodynamics. Reason: The zeroth law concerning thermal equilibrium was appeared after three laws (I, II and III) of termodynamics and thus was named as zeroth law.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Assertion is incorrect but Reason is correct

Q. Two bodies A, B and bodies B, C are in thermal equilibrium with each other. The temperature of A is ${45}^{\circ }\text{C}$. Then the temperature of C is

1. ${45}^{\circ }\text{C}$
2. $>{45}^{\circ }\text{C}$
3. $<{45}^{\circ }\text{C}$
4. can be any temperature

Q. Zeroth law of thermodynamics gives the concept of

1. Pressure
2. Volume
3. Heat
4. Temperature

Q. Thermometer construction is based on the principle of:

1. First Law of Thermodynamics
2. Second Law of Thermodynamics
3. Zeroth Law of Thermodynamics
4. Third Law of Thermodynamics

Q. A system X is neither in thermal equilibrium with Y, nor with Z. The systems Y and Z thermal equilibrium.

1. must be in
2. must not be in
3. may be in

Q. How toprepare thermodynamics advance level what is weitage of different topics in it

Q. Zeroth law of thermodynamics gives us the concept of

1. Thermal equilibrium
2. Mechanical equilibrium
3. Chemical equilibrium
4. All of the above.

Q. Mention the significance of Zeroth law of Thermodynamics.

Q. The Steam engine is based on which scientific principle?

Q. System A is in thermal equilibrium with B and B is separately in thermal equilibrium with C. Then A and C are in thermal equilibrium, from which law of thermodynamics it follows?

1. Third
2. Second
3. Zeroth
4. First

Q. Graph in figure shows the variation in density of a liquid substance with temperature. It can be seen that density of this substance is minimum at temperature $T_C$. This liquid is used as a thermometer fluid in bulb of a thermometer and two such identical thermometers are used to measure temperature of two bodies A and B which are at temperature $T_1$ and $T_2$. Now in an isolated system A and B are brought in contact so that they will be in thermal equilibrium. Which of the following statements is are correct.

1. Initially liquid level in thermometer of body A is lower than that of B.
2. After thermal equilibrium, the level of liquid in both thermometers are less than initial level of both.
3. After thermal equilibrium, the level of liquid in both thermometers may be more than initial level of both.
4. After thermal equilibrium, the level of liquid in thermometer in contact with body A is more its initial level while the level of liquid in thermometer in contact with body B may be same as its initial level.

Q. The Zeroth law of thermodynamics leads to the concept of:

1. heat content
2. internal energy
3. temperature
4. pressure

Q. Three substances are added to a mug to make coffee : Coffee is at ${65}^{o}C$ , Milk at ${65}^{o}C$ and Sugar , which is in thermal equilibrium with coffee. Then ,

1. Heat will be transferred from sugar to coffee to reach equilibrium
2. The sugar is in equilibrium with the milk
3. Heat will be transferred from the coffee to the sugar to reach equilibrium
4. None of these conclusions are valid

Q. Solve this.
select incorrect statement about the molar
specific heat of a gaseous system
(1) Specific heat in an adiabatic process, C_a = 0
(2) Specific heat in an isothermal process, $C_i=\infty$
(3) Specific heat in an isobaric process, Cp = $\frac{\gamma R}{\gamma -1}$
(4) Specific heat in an isochoric process, C_v = $\frac{R}{\gamma }$

Q. The basis for measuring thermodynamic property of temperature is given by

1. Third law of Thermodynamics
2. First law of Thermodynamics
3. Second law of Thermodynamics
4. Zeroth law of Thermodynamics

Q. A system X is neither in thermal equilibrium with Y nor with Z. The systems Y and Z:

1. cant be in thermal equilibrium.
2. cannot be in thermal equilibrium.
3. may be in thermal equilibrium.
4. must be in thermal equilibrium.

Q.

what is thermal equilibrium

Q. Body A is in contact with body B, which is in contact with body C. The temperature of A is more than B which is more than C. Which of the following is the correct direction of flow in accordance with the zeroth law of thermodynamics.

1. A to B to C
2. C to B to A
3. A to B and C to B
4. B to A and B to C