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Heat Transfer
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General Science for Class 7
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Heat Transfer
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Heat Transfer
Majority of the people wear white or light colored clothes in summer, because light colors
s
reflect less heat
reflect more heat
transfer less heat
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Heat Transfer
At night, sea water gets
warm than land
cool than land
both a and b
very hot
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Heat Transfer
The hotter the object,
the more heat absorbed
the less heat released
the less heat absorbed
the more heat released or emitted
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Heat Transfer
Sun emits
low ultraviolet rays
high ultraviolet rays
low infrared waves
high infrared waves
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Heat Transfer
The transfer of heat in solids from higher concentration to lower concentration in the presence of medium is known as
conduction
convection
radiation
excursion
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Heat Transfer
Just like light, radiant heat can also be
reflected
turned off
used in LED
effective
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Heat Transfer
The cool air which comes from sea to land is known as
sea breeze
land breeze
forward breeze
reverse breeze
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Heat Transfer
The warm air rises from the
land
sea
sun
trees
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Heat Transfer
The circulating movement of air is known as
conduction current
convection current
radiation current
air current
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Heat Transfer
Trees help in making environment
cool
warm
hot
clean
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