CBSE Questions for Class 11 Engineering Physics Thermal Properties Of Matter Quiz 3 - MCQExams.com

Convection currents are possible in solids
  • True
  • False
State whether given statement is True or False
The process of convection can takes place only in liquid and gases.
  • True
  • False
Select the odd one out (conduction, convection, radiation, expansion)
  • conduction
  • convection
  • radiation
  • expansion
Expansion of different liquids in different but of all gases is the same
  • True
  • False
State whether given statement is True or False
Heat from the sun reaches us by the process of convection
  • True
  • False
The absolute zero is the temperature at which:
  • all substances exist is solid state
  • molecular motion ceases
  • water freezes
  • none of these
In case of liquids and gases,when temperature increases
  • Volume is not altered much
  • Volume increases appreciably
  • Density increases
  • All
Thermal radiation is also called
  • infrared radiation
  • EM radiation
  • nuclear radiation
  • None
The water at the surface of swimming pool or lake being warmer due to
  • Radiation
  • Convection
  • Conduction
  • None
By the process of convection, the transfer of heat is always
  • Vertically downwards
  • Vertically upwards
  • Both
  • None
_________ is a process of transfer of heat by the actual movement of the medium particles.
  • Conduction
  • Convection
  • Radiation
  • All
If we take some water at $$\displaystyle { 0 }^{ \circ  }$$C and start heating it,we find that in the temperature range $$\displaystyle { 0 }^{ \circ  }$$C to $$\displaystyle { 4 }^{ \circ  }$$C
  • It expands on heating
  • It contracts on heating
  • Both
  • None
The molecules of medium vibrate about their mean positions during heat transfer in the process of
  • Conduction
  • Radiation
  • Convection
  • None
In vacuum, heat ______ be transferred by convection.
  • Can
  • Cannot
  • Both
  • None
If object A has higher temperature than object B , then  transfer of heat will  be from
  • $$A$$ to $$B$$
  • $$B$$ to $$A$$
  • No heat will transfer.
  • Can not say.
Water is poured into a pan and heated over a flame. After some time, the hot water begins rising to the top. Which type of heat transfer is involved in this ?
  • conduction
  • convection
  • radiation
  • thermal expansion
  • specific heat
When you approach fire, you feel heat on your body. Which of the following mode of heat transfer is involved in this ?
  • Conduction
  • Convection
  • Radiation
  • Thermal expansion
  • Specific heat
Find out the temperature of absolute zero kelvin.
  • $$0^oC$$
  • $$100^oC$$
  • $$273^oC$$
  • $$-273^oC$$
  • $$-100^oC$$
Which of the following is an example of convection? 
  • The heat of the sun warming our planet
  • The heat from an electric stove warming a frying pan
  • Ice cubes cooling a drink
  • A microwave oven cooking a meal
  • An overhead fan cooling a room
The pictured graphs are intended to show the relationship between the volume of a gas and the pressure of the gas. Which graph most likely shows that the volume of the gas is inversely proportional to its pressure?
The thermos bottles have a highly polished interior made of stainless steel, which makes them almost unbreakable. These thermos bottles also covered with insulated material to keep substances hot by reducing heat loss. Identify which of the following mode of heat transfer is restricted by the insulated material ?
  • Absorption
  • Conduction
  • Convection
  • Radiation
  • Evaporation
As the air around the base of a candle flame is heated, it rises and is replaced by cooler air due to which of following type of heat transfer?
  • Conduction
  • Convection
  • Radiation
  • Diffraction
  • Latent heat
Which of the following property is used to identify whether a substance is a solid, liquid or gas ?
  • Conductivity
  • Number of protons
  • Temperature
  • Number of neutrons
  • Resistively
Which of the following is possessed by radiant energy?
  • vibrating particles.
  • heat.
  • objects held at an elevated position.
  • objects as they rub against each other.
  • chemical bonds between atoms in a molecule
In the convection process rate of heat transfer is compared in the option between gas and liquid, choose the correct statement
  • Gas convects more as compared to other
  • Liquid convects more as compared to other
  • Liquid convects more as compared to other only if certain factors assists water
  • None of the above
Density of water is maximum at
  • $$0$$
  • $$4$$
  • $$4 K$$
  • $$100$$
Which of the following is NOT a Absolute Temperature Scale?
  • Celsius Scale
  • Rankine Scale
  • Kelvin Scale
  • None of these
  • Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
  • Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
  • Assertion is correct but Reason is incorrect
  • Both Assertion and Reason are incorrect
Which of the following statement(s) is/are true for absolute zero temperature?
  • It can be achieved practically
  • It cannot be achieved practically
  • No temperature below this is possible.
  • none of the above
At Absolute Zero Temperature, :
  • Molecular Energy is Zero
  • Molecular Energy is maximum
  • Molecular Energy is minimum
  • None of these
Water from $$4^0 C$$ to $$0^0C$$
  • expands
  • contracts
  • starts to turn into ice
  • none of these
Absolute zero on kelvin scale is equal to
  • $$273K$$
  • $$0K$$
  • $$373K$$
  • $$15K$$
The lowest pressure (the best vaccum) that can be created in laboratory at $$20^{\circ}C$$ is $$10^{-10}\ mm$$ of $$Hg$$. At this pressure, the number of ideal gas molecules per $$cm^{3}$$ will be
  • $$3.22\times 10^{12}$$
  • $$1.61\times 10^{12}$$
  • $$3.29\times 10^{6}$$
  • $$3.22\times 10^{5}$$
Under which of the following conditions is the law $$pV=RT$$ obeyed most closely by a real gas?
  • High pressure and high temperature
  • Low pressure and low temperature
  • Low pressure and high temperature
  • High pressure and low temperature
The S.I. unit of universal gas constant is
  • $$Watt K^{-1}mol^{-1}$$
  • $$ N K^{-1}mol^{-1}$$
  • $$JK^{-1}mol^{-1}$$
  • $$erg K^{-1}mol^{-1}$$
A piece of ice is floating in a jar containing water. When the ice melts, then the level of water :
  • Rises
  • Falls
  • Remains unchanged
  • Rises of Falls depending upon the mass of ice
Which of these does not require a medium ?
  • Conduction
  • Convection
  • Radiation
  • None of these
The table lists the melting points and the boiling points of four different substances. Which substance is a liquid at $${0}^{o}C$$?
  • melting point $$^{o}C$$ : $$-219$$ ; boiling point $$^{o}C$$ : $$-183$$
  • melting point $$^{o}C$$ : $$-7$$ ; boiling point  $$^{o}C$$ : $$58$$
  • melting point $$^{o}C$$ : $$98$$ ; boiling point $$^{o}C$$ : $$890$$
  • melting point $$^{o}C$$ : $$1083$$ ; boiling point $$^{o}C$$ : $$2582$$
How much heat energy in Joules is necessary to raise the temperature of $$5kg$$ of water from $${20}^{o}$$ to $${100}^{o}$$?
  • $$1672KJ$$
  • $$167200J$$
  • $$16720J$$
  • $$1672J$$
What is the name of the process of heat transfer using electromagnetic waves?
  • Conduction
  • Convection
  • Evaporation
  • Radiation
Which of the following gives evidence to kinetic theory of gases?
  • assumption of kinetic theory
  • Boyle's law
  • idea of mean free path
  • diffusion and evaporation
Every gas (real gas ) behaves as an ideal gas 
  • At high temperature and low pressure
  • At low temperature and high pressure
  • At normal temperature
  • None of the above
The mode of transfer of heat which requires no medium, is called as:
  • Radiation
  • Conduction
  • Combusion
  • Convection
A gas behaves more closely as an ideal gas at :
  • low pressure and low temperature
  • low pressure and high temperature
  • high pressure and low temperature
  • high pressure and high temperature
The propagation of heat in vacuum takes place by
  • Conduction
  • Convection
  • Radiation
  • None of these
Absolute temperature can be calculated by
  • Mean square velocity
  • Motion of the molecule
  • Both (a) and (b)
  • None of the above
Which of the following carries anomalous expansion ?
  • Mercury
  • Water
  • Copper
  • Sodium
Thermal radiation are
  • Electromagnetic wave
  • Mechanical transverse wave
  • Mechanical longitudinal wave
  • None of the above

A glass is full of water at $$4^{0}C$$ when it is (a) cooled (b) heated. Then, which one of the following is correct?
  • water level decreases, increases
  • water level increases, decreases
  • water level decreases, decreases
  • water over flow in both cases

The graph between temperature and pressure of a perfect gas is
  • hyperbola.
  • parabola.
  • a straight line parallel to pressure axes at $$73^{0}C$$.
  • a straight line intercepting the temperature axes at $$273^{0}C$$.
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