CBSE Questions for Class 11 Engineering Physics Thermal Properties Of Matter Quiz 2 - MCQExams.com

The perfect gas equation for 4 gram of hydrogen gas is :
  • $$PV=RT$$
  • $$PV= 2RT$$
  • $$PV$$ = $$\displaystyle\ \frac{1}{2} RT$$
  • $$PV = 4RT$$
In the steady state, the two ends of a metel rod are at $$30^oC$$ and $$20^oC$$. The temperature at the 60th cm is
  • $$22^oC$$
  • $$23^oC$$
  • $$24^oC$$
  • $$25^oC$$
The deviation of gases from the behaviour of ideal gas is due to :
  • colourless molecules
  • covalent bonding of molecules
  • attraction of molecules
  • absolute scale of temperature
Absolute zero is obtained from
  • $$P - V$$ graph
  • $$P - \displaystyle{\frac{1}{V}}$$ graph
  • $$P - T$$ graph
  • $$V - T$$ graph
The solar heat and light reach the earth via
  • radiation
  • conduction
  • convection
  • all of these
Heat is not transferred by the process of convection in:
  • solid
  • liquid
  • gas
  • none of the above
For a liquid, the coefficients of apparent expansion '$${\gamma}_{a}$$ 'and real expansion '$${\gamma}_{r}$$' are related as:
  • $${\gamma}_{a}={\gamma}_{r}$$
  • $${\gamma}_{a}<{\gamma}_{r}$$
  • $${\gamma}_{a}>{\gamma}_{r}$$
  • $$\displaystyle\frac{{\gamma}_{a}}{{\gamma}_{r}}=constant$$
The fastest mode of transfer of heat is
  • conduction
  • convection
  • radiation
  • all the above three
Heat transfer is done by:
  • convection
  • cooling
  • expansion
  • none of the above
In convection, heat is transferred
  • Upwards
  • Downwards
  • Sideways
  • In all directions
In vacuum, heat is transferred by
  • conduction
  • convection
  • radiation
  • all the above three
The nature of the graph of pressure 'P' against reciprocal of volume 'V' of an ideal gas at constant temperature is 
  • a straight line not passing through origin
  • a parabola
  • a straight line passing through origin
  • a rectangular hyperbola
Iron, hydrogen peroxide and carbon dioxide. When same amount heat is supplied to these three substances, which expands most?
  • Hydrogen peroxide
  • Carbon dioxide
  • Iron
  • All of these
The first thermometer was developed by :
  • Joule
  • Fahrenheit
  • Galileo
  • Watt
In Solar cooker: 
  • Electricity is used to cook food
  • Chemical energy is converted to electrical energy
  • Radiation from the sun is used to cook food
  • Heat energy is converted light energy
A beaker is completely filled with water at $$4^{\circ}C$$. It will overflow if
  • heated above $$4^{\circ}C$$.
  • cooled below $$4^{\circ}C$$.
  • both heated and cooled above and below $$4^{\circ}C$$ respectively.
  • none of the above.
The heat energy emitted by sun reaches the earth through:
  • Conduction
  • Convection
  • Radiation
  • None
The most commonly used thermometric liquid is :
  • water
  • alcohol
  • mercury
  • None of these
Radiation depends on:
  • the temperature of the substance
  • the colour of the substance
  • both the above
  • none of these
Which of the following will rise the highest?
  • Air at $$10^{\circ}C$$
  • Air at $$40^{\circ}C$$
  • Air at $$20^{\circ}C$$
  • Air at $$-5^{\circ}C$$
The phenomenon involved in sea breeze and land breeze is
  • Convection
  • Conduction
  • Radiation
  • None
Absolute zero is 
  • $$\displaystyle { -273 }^{ o }C$$
  • $$\displaystyle { -273 }^{ o }F$$
  • $$\displaystyle { -273 }^{ o }K$$
  • None of these
When water is heated from $$0^{\circ}C$$ to higher temperatures, its volume
  • increases
  • decreases till $$4^{\circ}C$$ and then increases
  • remains the same
  • first increases then decreases
The value of gas constant $$R$$ (in cal/mol-K) for hydrogen is :
  • $$\displaystyle\frac{1}{2}$$ 
  • $$2 $$
  • $$4$$ 
  • $$1 $$
The speed at which heat energy is propagated in vacuum is approximately :
  • $$3 \times {10}^{-8} {m}/{s}$$
  • $$3 {m}/{s}$$
  • $$3 \times {10}^{8} {m}/{s}$$
  • $$3 \times {10}^{10} {m}/{s}$$
The radiation of an electric room heater is most effective when it is :
  • uncleaned
  • polished to shine
  • painted green
  • painted black
The temperature, to which a gas must be cooled before it can be liquified by pressure alone, is known as its 
  • Saturation point
  • Freezing point
  • Liquification temperature
  • critical temperature
The air becomes heated by
  • Conduction
  • Convection
  • Radiation
  • Expansion
  • Diffusion
Essential requirement to propagation Heat energy: 
  • no medium
  • gaseous medium
  • solid medium
  • liquid medium
Water in a container is heated from $$0^{\circ}$$ to $$10^{\circ}C$$. Its volume :
  • increases for the full given range (from $$0^{\circ}$$ to $$10^{\circ}C$$)
  • decreases up to $$4^{\circ}$$, then increases
  • increases up to $$4^{\circ}C$$, then decreases
  • decreases for the full range (from $$0^{\circ}$$ to $$10^{\circ}C$$)
Transmission of heat by the movement of heated particles is called
  • Conduction
  • Convection
  • Radiation
  • Regelation
  • Expansion
In convection currents, heat is transferred upwards
  • horizontally
  • diagonally
  • vertically
  • none of these
When water is heated from $$0^\circ C$$, its volume will
  • decrease till $$4^\circ C$$ then increase
  • decrease till $$4^\circ C$$
  • remain the same
  • first increase then decrease
By the process of convection the transfer of heat is always-
  • upwards
  • downwards
  • sideways
  • in all possible directions
When surface water in a lake is just going to freeze, then what is the temperature of water at the bottom?
  • Less than $$0^{\circ} C$$
  • $$0^{\circ}C$$
  • $$4^{\circ}C$$
  • More than $$4^{\circ} C$$
The continuous movement of a fluid when heated is called :
  • convectional current
  • conduction current
  • electric current
  • magnetic current
The most commonly used themometric substance is
  • water
  • alcohol
  • mercury
  • none of these
Absolute zero temperature corresponds to
  • $$-273\:K$$
  • -$$273^\circ C$$
  • $$273^\circ C$$
  • none of these
Absolute zero corresponds to
  • -273 K
  • 273$$^o$$C
  • 273$$^o$$R
  • none of these
State True or False.
Mass of water at $$ \displaystyle 10^{\circ}C $$ increases when heated to $$ \displaystyle 30^{\circ}C $$.
  • True
  • False
The most commonly used thermometric substance is
  • water
  • alcohol
  • mercury
  • none of these
State whether true or false.
The density of water at $$ \displaystyle 10^{\circ}C $$ increases when heated further.
  • True
  • False
Heat transfer through radiation cannot take place in vacuum. True or false
  • True
  • False
The only liquid which is a good conductor of heat is-
  • water
  • turpentine
  • alcohol
  • mercury
During day time the air becomes warm due to the process of-
  • conduction
  • convection
  • radiation
  • expansion
The liquids and gases only have cubical expansion. True or false.
  • True
  • False
Convection cannot take place in_______
  • solids
  • liquids
  • gases
  • None of the above
The rate at which a body radiates heat depends on-
  • its temperature
  • its colour
  • its nature (dull or shiny)
  • all of these
A device in which heat loss due to conduction, convection and radiation is minimized is :
  • solar cooker
  • thermos flask
  • thermometer
  • electric heater
State whether given statement is True or False
The heat coming from the sun travels by convection
  • True
  • False
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