An ideal gas is taken reversibly around the cycle a-b-c-d-a as shown on the $$T$$ (temperature) -$$S$$ (entropy) diagram.

The most appropriate representation of the above cycle on a $$U$$ (internal energy) -$$V$$ (volume) diagram is:

 1 2 3 4
Subtopic:  Basic Terms |
64%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

In thermodynamic processes, which of the following statements is not true?

 1 In an adiabatic process, the system is insulated from the surroundings. 2 In an isochoric process, the pressure remains constant. 3 In an isothermal process, the temperature remains constant. 4 In an adiabatic process, $$P V^\gamma$$ = constant.

Subtopic:  Types of Processes |
90%
From NCERT
NEET - 2009
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Thermodynamic processes are indicated in the following diagram.

Match the following:

 Column I Column II P. Process-I a. Adiabatic Q. Process-II b. Isobaric R. Process-III c. Isochoric S. Process-IV d. Isothermal

 1 $$P \rightarrow \mathrm{a}, Q \rightarrow \mathrm{c}, R \rightarrow \mathrm{d}, S \rightarrow \mathrm{b}$$ 2 $$P \rightarrow \mathrm{c}, Q \rightarrow \mathrm{a}, R \rightarrow \mathrm{d}, S \rightarrow b$$ 3 $$P \rightarrow \mathrm{c}, Q \rightarrow \mathrm{d}, R \rightarrow \mathrm{b}, S \rightarrow a$$ 4 $$P \rightarrow \mathrm{c}, Q \rightarrow \mathrm{d}, R \rightarrow \mathrm{b}, S \rightarrow a$$
Subtopic:  Types of Processes |
87%
From NCERT
NEET - 2017
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

A polyatomic gas $$\left(\gamma = \frac{4}{3}\right)$$ is compressed to $$\frac{1}{8}$$ of its volume adiabatically. If its initial pressure is $$P_0,$$ its new pressure will be:

 1 $$8P_0$$ 2 $$16P_0$$ 3 $$6P_0$$ 4 $$2P_0$$
Subtopic:  Types of Processes |
85%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Which of the following graph shows the variation of pressure P with volume V for an ideal gas at a constant temperature?

 1 2 3 4
Subtopic:  Types of Processes |
84%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

If an ideal gas undergoes two processes at constant volumes ${\mathrm{V}}_{1}$ $\mathrm{and}$ ${\mathrm{V}}_{2}$ as shown in the pressure-temperature (P-T) diagram, then:

1. ${\mathrm{V}}_{1}$ = ${\mathrm{V}}_{2}$

2. ${\mathrm{V}}_{1}$ > ${\mathrm{V}}_{2}$

3. ${\mathrm{V}}_{1}$ < ${\mathrm{V}}_{2}$

4. ${\mathrm{V}}_{1}\ge {\mathrm{V}}_{2}$

Subtopic:  Types of Processes |
80%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Which of the following statement in the case of a thermodynamic process is not correct?
(The symbols carry their usual meaning)

 1 $$\Delta E_{\text{int}}=W;$$ indicates an adiabatic process 2 $$\Delta E_{\text{int}}=Q;$$ suggests an isochoric process 3 $$\Delta E_{\text{int}}=0;$$ is true for a cyclic process 4 $$\Delta E_{\text{int}}=-W;$$ indicates an adiabatic processes

Subtopic:  Types of Processes |
76%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

An ideal gas at $$27^{\circ}\mathrm{C}$$ is compressed adiabatically to $\frac{8}{27}$ of its original volume. If $\gamma =\frac{5}{3}$, then the rise in temperature will be:
1. 450 K
2. 375 K
3. 225 K
4. 405 K

Subtopic:  Types of Processes |
76%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Which one of the following processes is reversible?

 1 Transfer of heat by radiation 2 Transfer of heat by conduction 3 Isothermal compression 4 Electrical heating of a nichrome wire
Subtopic:  Types of Processes |
76%
From NCERT
AIPMT - 2005
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Given below are two statements:
 Statement-I: When $$\mu$$ amount of an ideal gas undergoes adiabatic change from state $$\left(\mathrm{P}_1, \mathrm{~V}_1, \mathrm{~T}_1\right)$$ to state $$\left(\mathrm{P}_2, \mathrm{~V}_2, \mathrm{~T}_2 \right)$$, the work done is,  $$\mathrm{W}=\frac{\mu{R}\left(\mathrm{T}_2-\mathrm{T}_1\right)}{1-\gamma}$$, where $$\gamma=\frac{C_P}{C_v}$$ and R = universal gas constant, Statement-II: In the above case, when work is done on the gas, the temperature of the gas would rise.

 1 Both statement-I and statement-II are true. 2 Both statement-I and statement-II are false. 3 Statement-I is true but statement-II is false. 4 Statement-I is false but statement-II is true.
Subtopic:  Types of Processes |
72%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.