# A sample of $$0.1$$ g of water at $$100^{\circ}\mathrm{C}$$ and normal pressure ($$1.013 \times10^5$$ N m–2) requires $$54$$ cal of heat energy to convert it into steam at $$100^{\circ}\mathrm{C}$$. If the volume of the steam produced is $$167.1$$ cc, <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> then the change in internal energy of the sample will be: 1. $$104.3$$ J 2. $$208.7$$ J 3. $$42.2$$ J 4. $$84.5$$ J

Subtopic:  First Law of Thermodynamics |
69%
From NCERT
NEET - 2018
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One mole of an ideal monatomic gas undergoes a process described by the equation $$PV^3=\mathrm{constant}.$$ The heat capacity of the gas during this process is:
1. $$\frac{3}{2}R$$
2. $$\frac{5}{2}R$$
3. $$2R$$
4. $$R$$

Subtopic:  Molar Specific Heat |
From NCERT
NEET - 2016
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The volume ($$V$$) of a monatomic gas varies with its temperature ($$T$$), as shown in the graph. The ratio of work done by the gas to the heat absorbed by it when it undergoes a change from state $$\mathrm{A}$$ to state $$\mathrm{B}$$ will be:

 1 $$2 \over 5$$ 2 $$2 \over 3$$ 3 $$1 \over 3$$ 4 $$2 \over 7$$
Subtopic:  Molar Specific Heat |
65%
From NCERT
NEET - 2018
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The efficiency of an ideal heat engine (Carnot heat engine) working between the freezing point and boiling point of water is:
1. $$26.8\%$$
2. $$20\%$$
3. $$6.25\%$$
4. $$12.5\%$$

Subtopic:  Carnot Engine |
77%
From NCERT
NEET - 2018
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A gas is compressed isothermally to half its initial volume. The same gas is compressed separately through an adiabatic process until its volume is again reduced to half. Then,

 1 compressing the gas through an adiabatic process will require more work to be done. 2 compressing the gas isothermally or adiabatically will require the same amount of work. 3 which of the case (whether compression through isothermal or through the adiabatic process) requires more work will depend upon the atomicity of the gas. 4 compressing the gas isothermally will require more work to be done.

Subtopic:  Types of Processes |
71%
From NCERT
NEET - 2016
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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

 P Q R S 1. c a d b 2. c d b a 3. d b a c 4. a c d b
Subtopic:  Types of Processes |
78%
From NCERT
NEET - 2017
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A gas is compressed isothermally to half its initial volume. The same gas is compressed separately through an adiabatic process until its volume is again reduced to half. Then:

 1 compressing the gas through an adiabatic process will require more work to be done. 2 compressing the gas isothermally or adiabatically will require the same amount of work to be done. 3 which of the case (whether compression through isothermal or through the adiabatic process) requires more work to be done will depend upon the atomicity of the gas. 4 compressing the gas isothermally will require more work to be done.

Subtopic:  Work Done by a Gas |
69%
From NCERT
NEET - 2016
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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
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