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Fill in the blank:
°C is the unit of ......................
Define coefficient of linear expansion. Write its SI unit.
What is evaporation? Why does it cause cooling?
Convert the following temperature into Fahrenheit scale:
-400C
The following figure shows a copper washer. Explain, giving reasons, whether the following characteristics of the washer increase, decrease, or remain the same when it is heated.
(a) Internal diameter
(b) Volume
(c) Mass
(d) Density
(e) External diameter
Consider the statement given below and choose the correct option.
Assertion: A system can be converted from one state to another state.
Reason: It takes place when the temperature of the system is constant.
Give reasons why –
a steam burn is more damaging than a burn caused by boiling water at the same temperature.
Why are burns caused by steam more painful than those caused by boiling water at the same temperature?
