MDCAT Physics MCQ's Test With Answers

MDCAT Physics MCQ's Test

Sr. # Questions Answers Choice
1 The pattern of a crystalline solid is: One dimensional Two dimensional Three dimensional Either A or B None of these
2 An ordinary glass gradually softens into a paste-like state before it becomes a very viscous liquid. It happens almost at: 800<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°C</span> 500<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°C</span> 300<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°C</span> 100<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°C</span> None of these
3 Amorphous solids: Have definite melting point Are called glassy solids Have no definite meting point Both B and C Both A and C
4 The word amorphous means: Without any structure With define structure Regular arrangement of molecules Both B and C None of these
5 The force which maintains the strict long-range order between atoms of a crystalline solid is the: Nuclear force Cohesive force Adhesive force Coulomb force None of these
6 The transition from solid to liquid state is: Abrupt Slow Continuous Discontinuous Both A and D
7 The transition of from solid to liquid is actually from: Order to disorder Disorder to order Order to order Disorder to disorder
8 Each atom in a metal crystal vibrates about a fixed point with a amplitude that: Decreases with rise in temperature Is not affected by rise in temperature Increases with rise in temperature Both B and C None of these
9 Zirconia is classified as: Ceramic solid Ionic compound Metal Either A or B Either B or C
10 The solids are classified as: Metals Crystalline Amorphous Polymeric All expect A
11 Crystalline solids are in the form of: Metals Ionic compounds Ceramics Both A and B All of these
12 A cable breaks if stretched by moe than 2mm, it is cut into two equal parts. How much either [art can be stretched without breaking? 25 m 1 mm 2 mm 0.5 m
13 Curie temperature is a point where: Diamagnetism changes to paramagnetism paramagnetism changes to Diamagnetism Ferromagnetism changes to paramagnetism paramagnetism changes to Ferromagnetism
14 If both the length and radius of rod are doubled, then the modulus of elasticity will: Increase Decrease Remains the same Doubled
15 A wire is stretched to double of its length. Its train is: 2 1 0 0.5
16 The rate of change of momentum of a molecule is equal to: Pressure Work Density Force
17 If a molecule with momentum mv strikes a wall and rebound then the change in momentum will be: -2 mv Zero 2 mv mv
18 Pressure may be defined as_____per second per unit area: Change in force Change in momentum Change in energy Work done
19 Truth of kinetic energy theory is confirmed by: Diffusion of gases Brownian motion Both A and B None of these
20 Electromagnetic waves emitted by hot bodies are called: Photoelectrons Alpha rats Thermal radiation None of these
21 The nature of thermal radiation is similar to: Ultraviolet rays Light rays Both of them None of them
22 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
23 At constant temperature, if the density of the gas is increased, its pressure will: Decrease Increase Remain unchanged None of these
24 The motion of molecules in gases i: Orderly Random Circular All of these
25 In an ideal gas, the molecules have: Kinetic energy only Potential energy only Both KE and PE None of these
26 Which of the following does not have the same units: Work Heat Kinetic energy Power
27 The temperature scale approved in SI units is: Calslus scale Kelvin scale Fehrenhelt scale None of these
28 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
29 The only significant motion possessed by the mono-atomic gas molecules is: Translatory Rotatory Vibratory None of these
30 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
31 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
32 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
33 When two objects come to common temperature, the body is said to be in: Static equilibrium Dynamic equilibrium Thermal equilibrium None of these
34 Absolute zero is considered as that temperature at which: All liquids become gases All gases become liquids Water freezes None of these
35 Hotness and coldness of an object is represented in terms of: Heat Temperature Chemicial None of these
36 When heat is added to the system, the entropy change is: Positive Negative Zero None of these
37 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
38 No entropy change is associated with: Isothermal Adiabatic process Isobaric process None of them
39 Number of spark plugs needed in diesel engine is: Four Five Six None of these
40 The efficiency of a particle heat engine: can be 100% Cannot be 100% Is always zero None of these
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