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#### Thermal Physics - One Mark Questions

10th Standard EM

Reg.No. :
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Science

Time : 00:30:00 Hrs
Total Marks : 20
7 x 1 = 7
1. The value of universal gas constant

(a)

3.81 mol–1 K–1

(b)

8.03 mol–1 K–1

(c)

1.38 mol–1 K–1

(d)

8.31 mol–1 K–1

2. Which of the following has the fastest process of heat transfer?

(a)

Conduction

(b)

convection

(c)

(d)

all the above

3. At what temperature are Celsius and Fahrenheit equal

(a)

40°

(b)

-40°

(c)

00

(d)

100°

4. In which process heat is transferred directly from one molecule to other?

(a)

conduction

(b)

convection

(c)

(d)

all the above

5. Temperature is a property which determines

(a)

amount of heat a body contains

(b)

total absolute energy a body has

(c)

direction of flow of heat

(d)

thermal energy

6. SI unit of temperature is

(a)

celsius

(b)

fahrenheit

(c)

kelvin

(d)

none

7. SI unit of heat is

(a)

calorie

(b)

joule

(c)

kilo calorie

(d)

kelvin

8. 8 x 1 = 8
9. The value of Avogadro number ________

()

6.023 x 1023 / mol (or) mol-1]

10. The temperature and heat are _________ quantities

()

Scalar

11. One calorie is the amount of heat energy required to raise the temperature of _______ of water through______.

()

1gm; 10C

12. The average kinetic energy of the molecules of a substance is called ____

()

Temperature

13. The SI unit of temperature is ______

()

kelvin

14. Temperature is an indication of the _____ of molecules.

()

average kinetic energy

15. The relation between celsius to kelvin

()

K = C+ 273

16. If there is flow of thermal energy between the systems, then they are in ______

()

thermal equilibrium

17. 5 x 1 = 5
18. Heat is taken out of the body

19. (1)

PV = constant

20. Heat is given to a body

21. (2)

joule

22. Heat energy

23. (3)

Negative

24. Rise in temperature

25. (4)

Positive

26. Boyle's law

27. (5)

Nature of mass of the substance