MDCAT Physics Chapter 5 Thermodynamics Online Test With Answers

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MDCAT Physics Chapter 5 Thermodynamics Online Test

Sr. # Questions Answers Choice
1 Truth of kinetic energy theory is confirmed by: Diffusion of gases Brownian motion Both A and B None of these
2 Electromagnetic waves emitted by hot bodies are called: Photoelectrons Alpha rats Thermal radiation None of these
3 The nature of thermal radiation is similar to: Ultraviolet rays Light rays Both of them None of them
4 The relationship between Boltzmann constant K with R and NAis given as: k = RN<sub>A</sub> k = R/N<sub>A</sub> k = NR/N<sub>A</sub> None of these
5 At constant temperature, if the density of the gas is increased, its pressure will: Decrease Increase Remain unchanged None of these
6 The motion of molecules in gases i: Orderly Random Circular All of these
7 In an ideal gas, the molecules have: Kinetic energy only Potential energy only Both KE and PE None of these
8 Which of the following does not have the same units: Work Heat Kinetic energy Power
9 The temperature scale approved in SI units is: Calslus scale Kelvin scale Fehrenhelt scale None of these
10 In the theory of dimensional analysis, heat may be properly represented by: ML<sup>2</sup>T<sup>-2</sup> MT<sup>-2</sup> ML<sup>-1</sup>T<sup>-1</sup> None of these
11 The only significant motion possessed by the mono-atomic gas molecules is: Translatory Rotatory Vibratory None of these
12 At constant temperature, if the volume of a given mass of a gas is doubled, then the density of gas becomes: Double Remains constant Half None of these
13 Real gases strictly obey gas laws at: High pressures and low temperatures Low pressures and high temperatures High pressures and &amp; temperatures None of these
14 A gas which strictly obeys the gas laws under all conditions of temperatures and pressure is called: Ideal gas Inert gas Real gas None of these
15 When two objects come to common temperature, the body is said to be in: Static equilibrium Dynamic equilibrium Thermal equilibrium None of these
16 Absolute zero is considered as that temperature at which: All liquids become gases All gases become liquids Water freezes None of these
17 Hotness and coldness of an object is represented in terms of: Heat Temperature Chemicial None of these
18 When heat is added to the system, the entropy change is: Positive Negative Zero None of these
19 Only those processes are probable to take place for which entropy os the system: Increases Remains constant Both A and B are correct None of above
20 No entropy change is associated with: Isothermal Adiabatic process Isobaric process None of them
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