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# Heat & Thermodynamics Test Online MCQs

 Test Name Heat & Thermodynamics MCQs Test Subject Physics Test Type MCQs Total Question 15 Total Marks 30 Total Time 15 Mints Test Help For Physics Subject Test Prep. All Admissions Test. All Jobs Test prep. B Tech and Medical Test prep. Engineering and BDS Test prep.

Get multiple choice questions of the physics subject topic Heat & Thermodynamics online. All the visitors should attempt these questions to prepare for the admission test, medical test, engineering and recruitment test. Heat & Thermodynamics MCQs Test Online being added below.

## Physics

1. The volume of a gas is reduced adiabatically to (1/4) of its volume at 27°C. If γ = 1.4. The new temperature will be:

Question 1 of 15

2. Which one of the following is not a thermodynamical co-ordinate?

Question 2 of 15

3. The real coefficient of volume expansion of glycerine is 0.000597 per °C and linear coefficient of expansion of glass is 0.000009 per °C. Then the apparent volume coefficient of expansion of glycerine is:

Question 3 of 15

4. A centigrade and Fahrenheit thermometers are dipped in boiling water. The water temperature is lowered until the Fahrenheit thermometer registers a temperature of 140° the fall of the temperature as registered by the centigrade thermometer is:

Question 4 of 15

5. The colour of a star indicates its:

Question 5 of 15

6. In an adiabatic process the quantity which remains constant is:

Question 6 of 15

7. The surface temperature of a body is 727°C and that of another body is 327. The ratio of total energies radiated by them is:

Question 7 of 15

8. The density of a substance at 0°C is 10 g/cc and at 100°C, its density is 9.7 g/cc. The coefficient of linear expansion of the substance is

Question 8 of 15

9. A quantity of heat required to change the unit mass of a solid substance to its liquid state, while the temperature remains constant, is known as

Question 9 of 15

10. The average kinetic energy of a gas molecule at 27°C is 6.21 x 10⁻²¹J, then its average kinetic energy at 227°C is:

Question 10 of 15

11. Fraunh offer line of the solar system is an example of:

Question 11 of 15

12. A black body is heated from 27°C to 127°C. The ratio of their energies of radiation emitted will be:

Question 12 of 15

13. An ideal gas at 27°C is compressed adiabatically to 8/27 its original volume [TVγ-1 = constant] and γ = 5/3, then the rise in temperature will be:

Question 13 of 15

14. The thermal conductivity of a rod is 2. What is its thermal resistivity?

Question 14 of 15

15. When a solid is converted into a gas, directly by heating then this process is known as:

Question 15 of 15

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