Thermal Properties Of Matter

Physics
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A sealed glass jar is full of water. When it is kept in a freezing mixture, it is broken because :

A
water expands from to
B
ice expands while melting
C
water expands due to freezing
D
ice expands since its temperature falls below
Easy
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The gas law constant is true for

A
isothermal change only
B
adiabatic change only
C
both isothermal & adiabatic
D
neither isothermal nor adiabatic
Easy
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Water at C is filled to the brim of 2 beakers. A boy performed an experiment A of heating and B of cooling. The observation was :

A
water level in B went down and in A water flowed out
B
water flowed out in both the cases
C
water flowed out in B and water level went down in A
D
water level went down in both cases
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The P-T graph for the given mass of an ideal gas is shown in figure. Then the volume

A
increases
B
decreases
C
remains constant
D
data insufficient
Easy
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A gas in an airtight container is heated from 25C to 90C. The density of gas will :

A
increase slightly
B
increase considerably
C
remain the same
D
decrease slightly
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A sealed glass jar is full of water. When its temperature is decreased to :

A
The glass jar remains as it is with ice
B
The glass jar remains as it is with water
C
The glass jar contains half the amount of ice mixed with water
D
The glass jar breaks due to the formation of ice
Easy
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The molar gas constant is the same for all gases because at the same temperature and pressure, equal volumes of gases have the same :

A
number of molecules
B
average potential energy
C
ratio of specific heats
D
density
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If the volume of the gas is to be increased by 4 times :

A
temperature and pressure must be doubled
B
at constant P, the temperature must be increased by 4 times
C
at constant T, the pressure must be increased by 4 times
D
it cannot be increased
Easy
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