Question

Precautions in using a laboratory Thermometer

Answer 1

Explanation:

1. The laboratory thermometer should be held vertically (or upright) while measuring temperature. It should not be tilted.

2. The bulb should be completely surrounded by the substance whose temperature is being measured.

3. The thermometer bulb should not touch the sides or bottom of the container in which the

substance is taken.

4. Read the thermometer while its bulb is still in touch with the substance. 5. Do not hold the thermometer by the bulb.

Answer 2

Answer:

(i) The thermometer should be kept upright not tilted.

(ii) The bulb should be surrounded from all sides by the substance whose temperature is to be measured.

(iii)The bulb should not touch the surface of the container.