Question

1)a lab thermometer cannot be used to measure the body temperature of a human body. 2) the drinking water is recommended to be boiled and filtered. GIVE REASONS​.

Answer 1

Answer:

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1) This is because as soon as we take out the bulb of the laboratory thermometer from our mouth, the level of mercury in its tube will start falling quickly. This will give a wrong value of the body temperature

2) Boiled and filter water are completely free from germs so it will provide additional health to the people. When we use the boiled water, the impurities are removed completely and in filter water some of the dust alone get removed from the water

Answer 2

Answer:

1) Laboratory thermometer needs to placed in a right angle position in order to obtain the accurate temperature, which is inconvenient to use for human body.

2) The water may contain microbodies or bacterias which are invisible to naked eyes. Therefore boiling or filtering the water helps us to assure that we are consuming safe water