#### Thermal Physics English Medium Free Online Test 1 Mark Questions with Answer Key 2020 - 2021

10th Standard

Reg.No. :
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Science

Time : 00:10:00 Hrs
Total Marks : 10

Part A

10 x 1 = 10
1. If a substance is heated or cooled, the change in mass of that substance is

(a)

positive

(b)

negative

(c)

zero

(d)

none of the above

2. Temperature is the average ______ of the molecules of a substance

(a)

difference in K.E and P.E

(b)

sum of P.E and K.E

(c)

difference in T.E and P.E

(d)

difference in K.E and T.E

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

(a)

conduction

(b)

convection

(c)

(d)

all the above

4. SI unit of temperature is

(a)

celsius

(b)

fahrenheit

(c)

kelvin

(d)

none

5. Increase in area due to heating is called

(a)

Linear expansion

(b)

Superficial expansion

(c)

Cubical expansion

(d)

real expansion

6. Fundamental laws of gases are

(a)

Boyle's law

(b)

Charles's law

(c)

(d)

all the above

7. Gas laws state the relationship between _____ properties of gas.

(a)

pressure

(b)

volume

(c)

Temperature & mass

(d)

all the above

8. The unit of coefficient of real expansion is

(a)

K

(b)

°C

(c)

K-1

(d)

°F

9. The degree of hotness or coldness of a body is called _____

(a)

Energy

(b)

Thermal energy

(c)

Temperature

(d)

Heat capacity

10. The amount of heat energy required to rise the temperature of 1gram of water through 10C is _____

(a)

One kilo calorie

(b)

One joule

(c)

One kelvin

(d)

One caloric