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Quiz 58
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1141. The thermodynamics is that branch of Physic in which we study:
Relations between heat and ionization energies
Relations between chemical and mechanical energies
Relations between kinetic and potential energies
Relations between heat and mechanical energies
1142. When a gas is compressed isothermally, the product of its pressure and volume during the process is:
Not constant
Constant
Zero
Proportional to entropy
1143. If 42 heat is transferred to the system during expansion, what is the change in internal energy when work done is 32 J?
74 J
116 J
10 J
106 J
1144. The thermodynamic process during which volume of the system remains constant is called:
Isothermal
Isobaric
Isochoric
Adiabatic
1145. The conditions for application of Boyle's law holds good in:
Adiabatic process
isothermal process
Isobaric process
Isochoric process
1146. An isolated thermodynamic system:
No heat transfers to the environment
Neither heat nor any mass are transferred to the environment
No dissipated energy and heat are transferred to the environment
No mass transfers to the environment
1147. Consider an ideal gas that confine to the cylinder with a fixed piston. on heating the gas, all the heat supplied increases
Kinetic energy of the molecules
Potential energy of the molecules
The intermolecular forces between gas molecules
The number of gas molecules
1148. The sum of all forms of (kinetic and potential) of a substance is termed as?
Internal energy
Elastic energy
Heat energy
Absolute energy
1149. In a certain process, 400J of heat energy is supplied to a system and at the same time 150J of work done by the system. The increase in internal energy of system is
150J
300J
250J
500J
1150. If 42 heat is transferred to the system during expansion, what is the change in internal energy? When work done is 32 J ?
74 J
116 J
10 J
106 J
1151. Pressure Volume graph of two systems "A" and "B" are plotted under isothermal and adiabatic conditions. Which of the following observation of graph represents the two systems?
Graph A represents isothermal and B adiabatic
Graph B represents isothermal and A adiabatic
Both graphs represent isothermal processes
Both graphs represent adiabatic processes
1152. Which of the following curve is an isotherm?
Curve A
Curve B
Curve C
Curve D
1153. First law of thermodynamics under adiabatic conditions can be mathematically written as:
Q = W
Q = ΔU
Q = U + W
W = -ΔU
1154. What will be the mathematical form of first law of thermodynamics for a system whose variation of volume by pressure is shown?
Q = W
Q = U/W
Q = U + W
Q = U
1155. When the rate of gas changes without change in temperature, the gas is said to undergo:
Isothermal Process
Adiabatic Process
Isochoric Process
Isobaric Process
1156. The rapid escape of air from a burst tyre is an example of:
Adiabatic Process
Isothermal Process
Cooling Process
First Law of Thermodynamics
1157. Temperature of given mass of a gas is changed from 150°C to 300°C during an isobaric process, volume of the gas will become:
Half
Double
Remain same
Less than double
1158. First law of thermodynamics concerns with the conservation of:
Heat
Momentum
Work
Energy
1159. For an ideal gas equation PV=nRT, the dimensions of Real Gas Constant R are:
[M'L²T⁻²K⁻¹]
[M'L³T⁻¹K⁻¹]
[M'L⁻²T⁻²K⁻¹]
[M'L²T⁻²K⁻¹]
1160. During the isothermal process, the temperature:
Remains constant during the initial phase
Remains constant throughout the process
Alters throughout the process
Increases throughout the process
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