UNIT.3.THERMAL PHYSICS
1) Absolute scale is also called as ______
(a) Kelvin scale (b) Celsius scale (c) Centigrade scale (d)
Fahrenheit scale
2) According to Charles's law
(a) P ∝ 1 / V (b) V ∝ T (c) V ∝
n (d) all the above
3) All the substances will undergo the following changes
like _____ when heated.
(a) increase in temperature (b) expansion of substance (c)
change of state (d) all the above
4) At constant temperature volume is inversely proportional
to pressure of a gas is known as
(a) Boyle's law (b) Charles (c) Avogadro (d) None
5) At what temperature are Celsius and Fahrenheit equal
(a) 40° (b) -40° (c) 00 (d) 100°
6) Change in volume of a solid during heating is
(a) Linear expansion (b) Superficial expansion (c) Cubical
expansion (d) apparent expansion
7) Charles's law is also called as ______
(a) the law of temperature (b) the law of pressure (c) the
law of volume (d) the law of gas
8) Fundamental laws of gases are
(a) Boyle's law (b) Charles's law (c) Avogadro (d) all the
above
9) Gas laws state the relationship between _____ properties
of gas.
(a) pressure (b) volume (c) Temperature & mass (d) all
the above
10) If the atoms or molecules of a gas do not interact with
each other, then the gas is said to be an ____
(a) Inert gas (b) Ideal gas (c) Imperfect fas (d) Pure gas
11) In which process heat is transferred directly from one
molecule to other?
(a) conduction (b) convection (c) Radiation (d) all the
above
12) Increase in area due to heating is called
(a) Linear expansion (b) Superficial expansion (c) Cubical
expansion (d) real expansion
13) Linear expansion is the change in _____ when object is
heated or cooled.
(a) length (b) area (c) volume (d) density
14) SI unit of heat is
(a) calorie (b) joule (c) kilo calorie (d) kelvin
15) SI unit of temperature is ______
(a) K (b) °C (c) /°C (d) 0F
16) SI unit of temperature is
(a) celsius (b) fahrenheit (c) kelvin (d) none
17) 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
18) The amount of heat energy required to rise the
temperature of 1gram of water through 1degree Celcius is _____
(a) One kilo calorie (b) One joule (c) One kelvin (d) One
caloric
19) The degree of hotness or coldness of a body is called
_____
(a) Energy (b) Thermal energy (c) Temperature (d) Heat
capacity
20) The formula for conversion of temperature from Kelvin to
Celsius is
(a) C=K+73 (b) C=K-273 (c) C= K+460 (d) C=K-460
21) The unit of coeyicient of real expansion is
(a) K (b) °C (c) K-1 (d) °F
22) The value of universal gas constant is _____
(a) 8.21 J mol-1 K-1 (b) 8.27 J mol-1 K-1 (c) 8.31 J mol-1
K-1 (d) 8.31 J mol-1 K-1
23) Thermal conduction in metal is due to
(a) Free electrons (b) bound electrons (c) Vibration of
molecules (d) vibration of atoms
24) Thermal expansion atparticular temperature is less in
(a) solid (b) liquid (c) gas (d) all above
25) Which of the following has the fastest process of heat
transfer?
(a) Conduction (b) convection (c) Radiation (d) all the
above