NEET Exam  >  NEET Tests  >  Topic-wise MCQ Tests for NEET  >  Assertion & Reason Test: Thermodynamics - NEET MCQ

Assertion & Reason Test: Thermodynamics - NEET MCQ


Test Description

10 Questions MCQ Test Topic-wise MCQ Tests for NEET - Assertion & Reason Test: Thermodynamics

Assertion & Reason Test: Thermodynamics for NEET 2024 is part of Topic-wise MCQ Tests for NEET preparation. The Assertion & Reason Test: Thermodynamics questions and answers have been prepared according to the NEET exam syllabus.The Assertion & Reason Test: Thermodynamics MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Assertion & Reason Test: Thermodynamics below.
Solutions of Assertion & Reason Test: Thermodynamics questions in English are available as part of our Topic-wise MCQ Tests for NEET for NEET & Assertion & Reason Test: Thermodynamics solutions in Hindi for Topic-wise MCQ Tests for NEET course. Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free. Attempt Assertion & Reason Test: Thermodynamics | 10 questions in 20 minutes | Mock test for NEET preparation | Free important questions MCQ to study Topic-wise MCQ Tests for NEET for NEET Exam | Download free PDF with solutions
Assertion & Reason Test: Thermodynamics - Question 1

Read the assertion and reason carefully to mark the correct option out of the options given below:

Assertion : Reversible systems are difficult to find in real world.

Reason : Most processes are dissipative in nature

Detailed Solution for Assertion & Reason Test: Thermodynamics - Question 1
In a perfectly reversible system, there is no loss of energy. Losses can be minimised, friction can be reduced, the resistance in L-C oscillating system can also be negligible. But one cannot completely eliminate energy losses. This makes a perfectly reversible system, an ideal.
Assertion & Reason Test: Thermodynamics - Question 2

Read the assertion and reason carefully to mark the correct option out of the options given below:

Assertion : Thermodynamic process in nature are irreversible.

Reason : Dissipative effects can not be eliminated.

Detailed Solution for Assertion & Reason Test: Thermodynamics - Question 2
In reversible process, there always occurs some loss of energy. This is because energy spent in working against the dissipative force is not recovered back. Some irreversible process occur in nature such as friction where extra work to cancel the effect of friction. Salt dissolves in water but a salt does not separate by itself into pure salt and pure water.
1 Crore+ students have signed up on EduRev. Have you? Download the App
Assertion & Reason Test: Thermodynamics - Question 3

Read the assertion and reason carefully to mark the correct option out of the options given below:

Assertion : The isothermal curves intersect each other at a certain point.

Reason : The isothermal change takes place slowly, so the isothermal curves have very little slope.

Detailed Solution for Assertion & Reason Test: Thermodynamics - Question 3
As isothermal processes are very slow and so the different isothermal curves have different slopes so they cannot intersect each other.
Assertion & Reason Test: Thermodynamics - Question 4

Read the assertion and reason carefully to mark the correct option out of the options given below:

Assertion : We can not change the temperature of a body without giving (or taking) heat to (or from) it.

Reason : According to principle of conservation of energy, total energy of a system should remains conserved.

Detailed Solution for Assertion & Reason Test: Thermodynamics - Question 4
We can change the temperature of a body without giving (or taking) heat to (or from) it. For example in an adiabatic compression temperature rises and in an adiabatic expansion temperature false, although no heat is given or taken from the system in the respective changes.
Assertion & Reason Test: Thermodynamics - Question 5

Read the assertion and reason carefully to mark the correct option out of the options given below:

Assertion : The specific heat of a gas is an adiabatic process is zero and in an isothermal process is infinite.

Reason : Specific heat of a gas in directly proportional to change of heat in system and inversely proportional to change in temperature.

Detailed Solution for Assertion & Reason Test: Thermodynamics - Question 5
In adiabatic process, no heat transfer takes place between gas and surrounding

i.e., ΔQ = 0

From definition of specific heat,

C = ΔQ/mΔT = 0

Again, for isothermal process

ΔT = 0

∴ C = ΔQ/mΔT = ∞

Assertion & Reason Test: Thermodynamics - Question 6

Read the assertion and reason carefully to mark the correct option out of the options given below:

Assertion : The heat supplied to a system is always equal to the increase in its internal energy.

Reason : When a system changes from one thermal equilibrium to another, some heat is absorbed by it.

Detailed Solution for Assertion & Reason Test: Thermodynamics - Question 6
According to first law of thermodynamics, ΔQ = ΔU + ΔW = ΔU + PΔV. If heat is supplies in such a manner that volume does not change ΔV = 0 i.e., isochoric process, then whole of the heat energy supplied to the system will increase internal energy only. But, in any other process it is not possible. Also heat may absorbed or evolved when state of thermal equilibrium changes.
Assertion & Reason Test: Thermodynamics - Question 7

Read the assertion and reason carefully to mark the correct option out of the options given below:

Assertion : A room can be cooled by opening the door of a refrigerator in a closed room.

Reason : Heat flows from lower temperature (refrigerator) to higher temperature (room).

Detailed Solution for Assertion & Reason Test: Thermodynamics - Question 7
When the door of refrigerator is kept open, heat rejected by the refrigerator to the room will be more than the heat taken by the refrigerator from the room (by an amount equal to work done by the compressor). Therefore, temperature of room will increase and so it will be warmed gradually. As according to 2nd law of thermodynamics, heat cannot be transferred on its own, from a body at lower temperature to another at higher temperature.
Assertion & Reason Test: Thermodynamics - Question 8

Read the assertion and reason carefully to mark the correct option out of the options given below:

Assertion : If an electric fan be switched on in a closed room, the air of the room will be cooled.

Reason : Fan air decrease the temperature of the room.

Detailed Solution for Assertion & Reason Test: Thermodynamics - Question 8
If an electric fan is switched on in a closed room, the air will be heated because due to motion of the fan, the speed of air molecules will increase. In fact, we feel cold due to evaporation of our sweat.
Assertion & Reason Test: Thermodynamics - Question 9

Read the assertion and reason carefully to mark the correct option out of the options given below:

Assertion : The internal energy of an isothermal process does not change.

Reason : The internal energy of a system depends only on pressure of the system.

Detailed Solution for Assertion & Reason Test: Thermodynamics - Question 9
The internal energy of system depends only on its temperature. In isothermal process temperature does not change, therefore, internal energy of the system remains the same.
Assertion & Reason Test: Thermodynamics - Question 10

Read the assertion and reason carefully to mark the correct option out of the options given below:

Assertion : An adiabatic process is an isentropic process.

Reason : Change in entropy is zero in case of adiabatic process.

Detailed Solution for Assertion & Reason Test: Thermodynamics - Question 10
Basically isentropic process is just a process in which entropy of system remains constant. And adiabatic is the process in which the heat transfer is zero in the process. When the adiabatic process is carried out reversibally then it is called isentropic process.
9 docs|1272 tests
Information about Assertion & Reason Test: Thermodynamics Page
In this test you can find the Exam questions for Assertion & Reason Test: Thermodynamics solved & explained in the simplest way possible. Besides giving Questions and answers for Assertion & Reason Test: Thermodynamics, EduRev gives you an ample number of Online tests for practice

Top Courses for NEET

Download as PDF

Top Courses for NEET