Question

Thermodynamic processes are indicated in the following diagram
Match the following :
Thermodynamics mcq question image
  Column-I   Column-II
P. Process I a. Adiabatic
Q. Process II b. Isobaric
R. Process III c. Isochoric
S. Process IV d. Isothermal

A. P → a, Q → c, R → d, S → b
B. P → c, Q → a, R → d, S → b  
C. P → c, Q → d, R → b, S → a
D. P → d, Q → b, R → a, S → c
Answer :   P → c, Q → a, R → d, S → b
Solution :
In isochoric process, the curve is parallel to $$y$$-axis because volume is constant. Isobaric is parallel to $$x$$-axis because pressure is constant. Along the curve, it will be isothermal because temperature is constant.
So, P → c ⇒ Q → a ⇒ R → d ⇒ S → b

Releted MCQ Question on
Heat and Thermodynamics >> Thermodynamics

Releted Question 1

An ideal monatomic gas is taken round the cycle $$ABCDA$$   as shown in the $$P - V$$  diagram (see Fig.). The work done during the cycle is
Thermodynamics mcq question image

A. $$PV$$
B. $$2PV$$
C. $$\frac{1}{2}PV$$
D. zero
Releted Question 2

If one mole of a monatomic gas $$\left( {\gamma = \frac{5}{3}} \right)$$  is mixed with one mole of a diatomic gas $$\left( {\gamma = \frac{7}{5}} \right)$$  the value of $$\gamma $$ for mixture is

A. 1.40
B. 1.50
C. 1.53
D. 3.07
Releted Question 3

A closed compartment containing gas is moving with some acceleration in horizontal direction. Neglect effect of gravity. Then the pressure in the compartment is

A. same everywhere
B. lower in the front side
C. lower in the rear side
D. lower in the upper side
Releted Question 4

A gas mixture consists of 2 moles of oxygen and 4 moles of argon at temperature $$T.$$ Neglecting all vibrational modes, the total internal energy of the system is

A. $$4\, RT$$
B. $$15\, RT$$
C. $$9\, RT$$
D. $$11\, RT$$

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