Test # 45
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1500 questions in 150 tests. Each test contains 10 questions.
Idiom of the Day
follow in (someone`s) footsteps/tracks
to follow someone`s example, to follow someone exactly
The boy is following in his father`s footsteps and has decided to work for a bank.
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Precautions while using Laboratory Thermometers
Points to kept in Mind while using a thermometer
The thermometer should be protected from sudden changes of temperature. Never wash a hot thermometer in cold water or put a cold thermometer in a hot bath. For correct reading of temperature see that the thermometer is vertically and your eyes are exactly in line with the mercury level. Mercury on heating expands. Even a small expansion of mercury in the bulb of the thermometer causes a considerable rise in the capillary tube.