Last Monday, Pankaj was dealing with an immense cough and cold. Besides this, he was suffering from a great headache. So, he decided to take a leave on that day so that he could take some rest at his home. After one hour he thought to check his fever through a clinical thermometer, so before using it, he washed it and started shaking it very fastly in his hand, so that the mercury level of the thermometer gets reduced. At the same time, his elder brother Vishwas scolded him and suggested that he should shake the thermometer slowly. Some precautionary measures while checking the fever through a clinical thermometer could be

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Thermometer should not be held by the bulb

Thermometer should be held by the bulb

Thermometer should not be washed properly before use.

Thermometer should not be washed properly after use.

answer is A.

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Detailed Solution

There could be many precautionary measures while checking the fever through a clinical thermometer, but some of them are listed as below:
The thermometer should never be held by the bulb, it should be held by the opposite side of the bulb.
Before and after the use of this clinical thermometer, it should be washed properly.

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