Physics Fsc Part 1 Chapter 6 Online Test With Answers

Physics Fsc Part 1 Chapter 6 Online Test

Sr. # Questions Answers Choice
1

What can be calculated from the curve under PV graph.

 <p>Heat</p> <p>Work done</p> <p>Temperatures</p> <p>Internal energy</p>
2

Work done by the system is takn as

 <p>Positive</p> <p>Negative</p> <p>Undefined</p> <p>None of these</p>
3

The efficiency of carnot eninge is always.

 <p>Greater than real engine</p> <p>Less than real engine</p> <p>Equal to the real engine</p> <p>Both a and b</p>
4

The efficiency of carnot engine depends upon 

 <p>Sink temperature</p> <p>Source temperature</p> <p>Both a and b</p> <p>The working substance</p>
5

In carnot engine, each process is.

 <p>Reversible</p> <p>Preferable Reversible</p> <p>Irreversible</p> <p>Perfectly irreversible</p>
6

Effeciency of a carnot engine is.

 <p>Infinite</p> <p>Ten</p> <p>Greater than 1</p> <p>Less Than</p>
7

Carnot Cycle is

 <p>Reersible</p> <p>Irreversible</p> <p>Both</p> <p>Cp - Cv = R</p>
8

KE of molecules of an ideal gas at absolutely zero will be

 <p>0</p> <p>Infinite</p> <p>Very High</p> <p>Below zero</p>
9

Internal energy is similar to the

 <p>Vibrational K.E.</p> <p>Gravitational P.E.</p> <p>K.E.</p> <p>All of these</p>
10

Internal energy of a substance, is directly proportional to

 <p>T</p> <p>V</p> <p>W</p> <p>P</p>
11

The sum of all forms of molecular energies of substance is termed as

 <p>Kinetic energy</p> <p>Potential energy</p> <p>Internal energy</p> <p>Heat energy</p>
12

The process in which no heat enters or leaves the system is known as.

 <p>Isothermal process</p> <p>Adiabatic process</p> <p>Isochoric process</p> <p>Isobaric process</p>
13

What one is not an isothermal change.

 <p>Melting of solid</p> <p>Bioling of liquid</p> <p>Bursting of bicycle tyre</p> <p>Slow expansion of gas</p>
14

The process which is carried out at constant temperature is called.

 <p>Adiabatic process</p> <p>Isothermal process</p> <p>Isochoic process</p> <p>Isobaric process</p>
15

Adiabatic change occurs hen the gas expands or compressed.

 <p>Rapidly</p> <p>Slowly</p> <p>Gradually</p> <p>Moderately</p>
16

Which is not exmple of ddiablatic process.

 <p>Rapid escape of air from burst tyre</p> <p>Rapid expansion of air</p> <p>Conversion of water&nbsp; into ice in refrigerator</p> <p>Cloud formation in the atmosphere</p>
17

An addition of 400 J of heat casues the increase in internal energy of system is equal to 300 J, then work done will be

 <p>100 J</p> <p>200J</p> <p>300 J</p> <p>400 J</p>
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