Question

(e) Why is thermometer used?
(f) Why cannot mercury thermometersbe used in very coldplaces?​

Answer 1

Answer:

• A thermometer is a device used for measuring temperature. This ice-covered thermometer shows that the temperature is about 0 degrees Celsius, or 32 degrees Fahrenheit.

Explanation:

• It is very difficult to use mercury thermometers at a lower temperature since the mercury solidifies at lower temperatures. Hence the correct option is D. Additional information: Mercury is still used for the preparation of thermometers due to the various physical and chemical properties of mercury.

Answer 2

Answer:

(a)to measure the temperature

(b)'Alcohol thermometers are used rather than mercury thermometers in very cold regions because alcohol has a lower freezing point than mercury.'

Mercury has a higher freezing point.