Question

..... is the preferred liquid in a
barometer​

Answer 1

Answer: Mercury is commonly used in barometers because its high density means the height of the column can be a reasonable size to measure atmospheric pressure.

OR

Though other liquids can be used in a barometer, mercury is the most common. Its density allows the vertical column of the barometer to be of manageable size. If water were used, for instance, the column would have to be 34 feet high.

Hopefully thinking that this will help you

Please mark me as Brainliest

Answer 2

Mercury is the preferred liquid in a
barometer