Question

2.What precautions should be observed measuring temperature with a
laboratory thermometer?​

Answer 1

Answer:

The precautions needed while reading a laboratory thermometer are:

It should be kept upright not tilted.

Bulb should be surrounded from all sides by the substance of which the temperature is to be measured.

The bulb should not touch the surface of the container.

Answer 2

1, Never hold the thermometer by the bulb while reading it.

2, Wash the thermometer with water or antiseptic solution before and after use.

3, While performing the experiment, don't touch the bulb of the thermometer with the wall of the beaker.

4, Read the thermometer keeping the level of mercury along the line of sight.