The State of a Gas

Q. The equation of state for real gas is given by (P+a/V2)(V-b)=RT. The dimensions of the constant "a" and "b" ??

Q. The given figure shows the isotherms of a fixed mass of an ideal gas at three temperatures $T_A,T_B$ and $T_C$ then

1. $T_A>T_B>T_C$
2. $T_A<T_B<T_C$
3. $T_B<T_A<T_C$
4. $T_A=T_B=T_C$

Q.

What is a real life example of the first law of thermodynamics?

Q.

The average Kinetic energy of the molecules of a gas is directly proportional to the _____ temperature

Q.

The Gibbs energy change (in J) for the given reaction at $\left[{\mathrm{Cu}}^{2+}\right]$$=$ $\left[{\mathrm{Sn}}^{2+}\right]$$=$$1$ $\mathrm{M}$ and $298\mathrm{K}$ is:

$\mathrm{Cu}\left(\mathrm{S}\right)+{\mathrm{Sn}}^{2+}\left(\mathrm{aq}.\right)\to {\mathrm{Cu}}^{2+}\left(\mathrm{aq}.\right)+\mathrm{Sn}\left(\mathrm{s}\right)$

$({{\mathrm{E}}^0}_{{\mathrm{Sn}}^{2+}|\mathrm{Sn}}=-0.16\mathrm{V},{{\mathrm{E}}^0}_{{}_{{\mathrm{Cu}}^{2+}|\mathrm{Cu}}}=0.34\mathrm{V},\mathrm{Take}\mathrm{F}=96500\mathrm{C}{\mathrm{mol}}^{-1})$

Q. Explain the concept of absolute zero of temperature on the basis of kinetic theory of gases

Q. The given figure shows the isotherms of a fixed mass of an ideal gas at three temperatures $T_A,T_B$ and $T_C$ then

1. $T_A>T_B>T_C$
2. $T_A<T_B<T_C$
3. $T_B<T_A<T_C$
4. $T_A=T_B=T_C$

Q.

Why are gases so easily compressible whereas it is almost impossible to compress a solid or a liquid?

Q.

How to indicate the temperature and pressure of a reaction?

Q.

What is a real boundry?

Q. Which of the following parameters does not characteristic the thermodynamic state of matter?

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

Q.

What is an example of free energy?

Q.

The temperature and pressure of a reaction are indicated by:

Q.

Fundamental properties which determine the state of a system are referred to as state variables.

1. True

2. False

Q.

The kinetic energy of molecules is______________in solids and maximum in gases.

Q.

The gas which is confined in a rigid container is heated. Which of the following statement is true?

1. The kinetic energy of the gas particles will decrease

2. The pressure will increases

3. The density will increases

4. The volume will increases.

Q.

Which state has the most kinetic energy?

Q. The degree of freedom of a gas is $6$. Gas can be

1. $He$
2. $N_2$
3. $H_2$
4. $O_3$

Q.

I am unable to do numericals of neet papers thermodynamics and thermal properties of matter

Especially the graphs too.

Q.

What is the value of G?

Q. Match List -I with List - II and select the correct answer using the code given below the lists:


$\begin{array}{cc}\text{List -I}& \text{List-II}\\ \text{A. Grashof number}& \text{1. Mass diffusion}\\ \text{B. Schmidt number}& \text{2. Transient heat conduction}\\ \text{C. Weber number}& \text{3. Free convection}\\ \text{D. Fourier number}& \text{4. Forced convection}\\ & \text{5. Surface tension}\\ & \text{6.Radiation}\end{array}$

1. 
   A ; 4, B ; 2 , C ; 3, D ; 5
2. 
   A ; 3, B ; 1 , C ; 5, D ; 2
3. 
   A ; 5, B ; 1 , C ; 2, D ; 4
4. 
   A ; 1, B ; 2 , C ; 5, D ; 4

Q. 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 A to state B, is?

1. $\frac{1}{3}$
2. $\frac{2}{5}$
3. $\frac{2}{3}$
4. $\frac{2}{7}$

Q.

Is a positive change in Gibbs free energy $\left(∆G\right)$ spontaneous?

Q. Which of the following statements is correct for any thermodynamics system?

1. The internal energy changes in all processes
2. The change in entropy can never be zero
3. The work done in an adiabatic process is always zero
4. Internal energy and entropy are state functions

Q. The degree of freedom of a gas is $6$. Gas can be

1. $H_2$
2. $He$
3. $N_2$
4. $O_3$

Q. The state of a thermodynamic system is represented by:

1. Pressure only
2. Volume only
3. Pressure, volume and temperature
4. number of moles

Q.

Which of these statements is/are true about internal energy (Eint) of a system of gas?

1. $E_{int}$ always increases as pressure increases

2. $E_{int}$ always decreases as temperature decreases

3. $E_{int}$ is proportional to volume

4. $E_{int}$ is proportional to the kinetic energy of the atoms in the system

Q. An ideal gas cannot be liquified because

1. Its critical temperature is always above $0^{\circ }\text{C}$.
2. Its molecules are relatively smaller in size
3. It solidifies before becoming a liquid
4. Forces operating between its molecules are negligible

Q.

Which of these statements is/are true about internal energy (Eint) of a system of gas?

1. always increases as pressure increases

2. always decreases as temperature decreases

3. is proportional to volume

4. is proportional to the kinetic energy of the atoms in the system

Q.

Enthalpy change during a reaction does not depend upon

1. conditions of a reaction
2. initial and final concentration
3. number of steps in the reaction
4. physical states of reactants and products