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
-
Alcohol, mercury and alcohol
- Air, alcohol and mercury
- Mercury, alcohol and mercury
- Air, mercury and alcohol
The correct answer is: A
Explanation
The Six's maximum and minimum thermometer uses a liquid-filled bulb connected to a U-shaped tube with a mercury thread. As the liquid expands or contracts, the mercury moves, pushing the steel indexes to indicate the maximum and minimum temperatures, which can be reset using a magnet.
There is an explanation video available .