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Test: Basic concept, Zeroth law - JEE MCQ


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15 Questions MCQ Test Chemistry for JEE Main & Advanced - Test: Basic concept, Zeroth law

Test: Basic concept, Zeroth law for JEE 2024 is part of Chemistry for JEE Main & Advanced preparation. The Test: Basic concept, Zeroth law questions and answers have been prepared according to the JEE exam syllabus.The Test: Basic concept, Zeroth law MCQs are made for JEE 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Basic concept, Zeroth law below.
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Test: Basic concept, Zeroth law - Question 1

Among the following the state function(s) is (are)
(i) Internal energy
(ii) Irreversible expansion work
(iii) Reversible expansion work
(iv) Molar enthalpy

Detailed Solution for Test: Basic concept, Zeroth law - Question 1

Internal Energy is a state function. It's value depends only on the initial and final positions.
Change in internal energy do not depend upon the path followed by the process. It only depends on initial and final states i.e

Test: Basic concept, Zeroth law - Question 2

For a spontaneous process, the correct statement(s) is (are)

Detailed Solution for Test: Basic concept, Zeroth law - Question 2

For a process to be spontaneous.
ΔSsystem + ΔSsurrounding > 0

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Test: Basic concept, Zeroth law - Question 3

The number of extensive and intensive properties in the following list is respectively Mass, temperature, pressure, enthalpy, heat capacity, internal energy, density

Detailed Solution for Test: Basic concept, Zeroth law - Question 3
Extensive Mass, enthalpy, heat capacity, internal energy.
Intensive Temperature, pressure, density
Test: Basic concept, Zeroth law - Question 4
Choose the correct answer- A thermodynamic state function is a quantity:
Detailed Solution for Test: Basic concept, Zeroth law - Question 4
A thermodynamic state function is a quantity, whose value is independent of path. Its value depends only upon the state of the system.
Test: Basic concept, Zeroth law - Question 5

One mole of an ideal gas at 300 K is expanded isothermally from an initial volume of 1 litre to 10 litres. The ΔE for this process is (R = 2cal mol−1 K−1)

Detailed Solution for Test: Basic concept, Zeroth law - Question 5

For a finite change For an isothermal process Hence

Test: Basic concept, Zeroth law - Question 6

A cyclic process is shown in diagram for an ideal gas. Which of the following diagram represents the same process?

Detailed Solution for Test: Basic concept, Zeroth law - Question 6

AB : Isobaric expansion BC : Isothermal expansion
CD : Isochoric DA : Isothermal compression

Test: Basic concept, Zeroth law - Question 7

Which of the following conditions are not suitable for a spontaneous reaction?

Detailed Solution for Test: Basic concept, Zeroth law - Question 7

ΔG (Gibbs' free energy) must be negative for a spontaneous reaction.
Using Gibbs' free energy equation, we can find favourable conditions.

Test: Basic concept, Zeroth law - Question 8

A heat engine carries one mole of an ideal mono-atomic gas around the cycle as shown in the figure. Select the correctoption:

Detailed Solution for Test: Basic concept, Zeroth law - Question 8

For monoatomic gas
At constant volume,
At constant pressure,

Test: Basic concept, Zeroth law - Question 9

A gas undergoes change from state to state . In this process, the heat absorbed and work done by the gas is and , respectively. Now gas is brought back to by another process during which of heat is evolved. In this reverse process of to :

Detailed Solution for Test: Basic concept, Zeroth law - Question 9





(work done on the system).

Test: Basic concept, Zeroth law - Question 10

A diatomic ideal gas undergoes a thermodynamic change according to the P-V diagram shown in the figure. The total heat given to the gas is nearly
(use ln 2 = 0.7)

Detailed Solution for Test: Basic concept, Zeroth law - Question 10





Process :

Test: Basic concept, Zeroth law - Question 11

In diagram shown in figure is a semicircle. The work done in the process is

Detailed Solution for Test: Basic concept, Zeroth law - Question 11

Net work done is positive and area between semicircle which is equal to 1)
As the curve is going anti-clockwise, the work done is positive.

Test: Basic concept, Zeroth law - Question 12

An ideal gas has temperature T1 at the initial state i shown in the P−V diagram. The gas has a higher temperature T2 at the final states a and b, which it can reach the paths shown. The change in entropy:

Detailed Solution for Test: Basic concept, Zeroth law - Question 12

and
As
∴ Change in entropy is greater in case (b).

Test: Basic concept, Zeroth law - Question 13

An ideal monatomic gas is taken round the cycle as shown in the fig. The work done during the cycle is

Detailed Solution for Test: Basic concept, Zeroth law - Question 13

The work done during the cyclic path is equal to the area enclosed by the path, which is,

Test: Basic concept, Zeroth law - Question 14

Enthalpy change for freezing of of water at and is . Calculate the internal energy change in when of water is converted into ice?

Detailed Solution for Test: Basic concept, Zeroth law - Question 14

When water is converted into ice then internal energy is equal to enthalpy change for freezing at 1 bar and .


Enthalpy change for freezing of of water at 1 bar and temperature is .
Hence, internal energy equal to .

Test: Basic concept, Zeroth law - Question 15

A system goes from to via two processes and shown in the figure. If and are the changes in internal energies in the processes I and Il respectively

Detailed Solution for Test: Basic concept, Zeroth law - Question 15

A system goes from to via two processes and shown in the figure. If and are the changes in internal energies in the processes I and Il respectively

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