A coolant in a chemical or nuclear plant is a liquid that is used to prevent different parts of a plant from getting too hot. One important property of coolant is that it :
Should have low specific heat.
Should have high specific heat.
High density and low thermal conductivity.
Low density and high thermal conductivity.
A
High density and low thermal conductivity.
B
Low density and high thermal conductivity.
C
Should have high specific heat.
D
Should have low specific heat.
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Solution
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The heat absorbed by a substance is directly proportional to its specific heat.Thus the coolant should have high specific heat to absorb a large amount of heat. hence,option B is correct.
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Q5
Explain
why
(a) Two bodies at different temperatures T1
and T2
if brought in thermal contact do not necessarily settle to the mean
temperature (T1
+ T2)/2.
(b) The coolant in a chemical or a nuclear plant (i.e., the liquid
used to prevent the different parts of a plant from getting too hot)
should have high specific heat.
(c) Air
pressure in a car tyre increases during driving.
(d) The climate of a harbour town is more temperate than that of a
town in a desert at the same latitude.