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The diagram above shows a maximum and minimum thermometer divided into…

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The diagram above shows a maximum and minimum thermometer divided into ...

The diagram above shows a maximum and minimum thermometer divided into three portions P, Q and R. which of the following is true about the respective content of P, Q and R?

A. Air, alcohol and mercury

B. alcohol, mercury and alcohol

C. mercury, alcohol and mercury

D. Air, mercury and alcohol

QUICK ANSWER…

B

DETAILS…

Six’s thermometer, as shown above, is a thermometer used to measure the maximum and minimum temperatures reached in an environment where the temperature fluctuates over a period of time.

In six’s thermometer design,

  • The sealed (minima) glass tube labelled P is filled with alcohol.
  • In-between the minima and maxima tube (at the downward bend labelled Q) is filled with mercury.
  • And the sealed (maxima) glass tube labelled R is again filled with alcohol.

Now for the right answer to the above question:

  1. Option A is incorrect. P = alcohol, Q = mercury, R = alcohol
  2. Option B is correct.
  3. C is incorrect.
  4. D is not the correct answer.

KEY-POINTS…

You may please note these/this:

  • In six’s thermometer, both extreme bulbs contain alcohol, while the middle u-tube contain mercury.

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/ culled from 2015 JAMB-UTME physics past question 26 /

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