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Question

One should read the thermometer by keeping the level of mercury along the line of sight, in order to avoid ___.

A
damage to our eyes
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B
reading the wrong value
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C
tilting of our head
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D
fall of mercury level
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Solution

The correct option is B reading the wrong value
When a person does not read the thermometer by keeping the level of mercury along sight, there is a high possibilty to take the wrong value. To avoid this error, it is always advised to record thermometer measurements while keeping the mercury level straight to the eye.

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