Heat and Thermodynamics MCQs. We covered all the Heat and Thermodynamics MCQs in this post for free so that you can practice well for the exam.
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MCQ on Heat and Thermodynamics for Students
The equation for Gibb’s function is
1. dQ = dV+dW
2. dH = TdS + VdP
3. dU = TdS – PdV
4. dH = TdS + VdP
Option 4 – dH = TdS + VdP
A black body is placed in a vacuum-spaced area at 27°C. Calculate the ratio of the rate of radiation emitted when the black body is at 527°C and 127°C.
1. 21:23
2. 23 : 1
3. 23:14
4. 4 : 221
Option 2 – 23 : 1
The fraction of heat that changes into work
1. Helm-Holtz free energy
2. Gibb’s free energy
3. H+G
4. F +G
Option 2 – Gibb’s free energy
Which of the following represents the fraction that can be changed into work from internal energy
1. Enthalpy
2. Gibbs energy
3. Total energy
4. Helm-Holtz free energy
Option 4 – Helm-Holtz free energy
The temperature at which Gibb’s free energy becomes zero
1. T=H/S
2. T= S/H
3. T = SH
4. T= S+H
Option 1 – T=H/S
When the pressure is increased, the boiling point of the liquid
1. increases
2. doesn’t change
3. decreases
4. none of these
Option 1 – increases
The function of enthalpy
1. H = PV
2. H = U
3. H =U+PV
4. H = QUT
Option 3 – H =U+PV
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