Understanding Monometers and Pressure Calculations

The video tutorial explains how monometers are used to measure pressure inside a container. It covers the calculation of absolute and gauge pressure in both cm Mercury and pascals. The tutorial also discusses how the height of the mercury column affects pressure readings and provides practical applications of these concepts.

What is the primary function of a monometer?

• To measure volume

• To measure pressure inside a container

• To measure speed

• To measure temperature

In a monometer, when the mercury reaches equilibrium, what must be true about the pressures on both sides?

• The pressures must be zero

• The pressure on the right must be greater

• The pressure on the left must be greater

• The pressures must be equal

How is the absolute pressure inside a container expressed in cm Mercury calculated?

• By dividing the atmospheric pressure by the mercury column height

• By multiplying the atmospheric pressure by the mercury column height

• By subtracting the mercury column height from the atmospheric pressure

• By adding the atmospheric pressure and the mercury column height

What is the standard atmospheric pressure in pascals used in calculations?

• 10^7 pascals

• 10^6 pascals

• 10^4 pascals

• 10^5 pascals

What is gauge pressure?

• The ratio of absolute pressure to atmospheric pressure

• The sum of absolute pressure and atmospheric pressure

• The product of absolute pressure and atmospheric pressure

• The difference between absolute pressure and atmospheric pressure

Why is gauge pressure often referred to as such?

• Because it is always negative

• Because it is independent of atmospheric pressure

• Because it is always positive

• Because it is derived from the height reading of the monometer

When the mercury column is taller on the left side, how does the pressure inside the container compare to atmospheric pressure?

• It is higher by 36 cm Mercury

• It is equal to atmospheric pressure

• It is lower by 18 cm Mercury

• It is higher by 18 cm Mercury

What happens to the pressure inside the container when the mercury column is taller on the right side?

• It becomes higher than atmospheric pressure

• It remains the same as atmospheric pressure

• It becomes lower than atmospheric pressure

• It becomes zero

How is the pressure inside the container calculated when the mercury column is taller on the left side?

• By adding the mercury column height to atmospheric pressure

• By subtracting the mercury column height from atmospheric pressure

• By multiplying the mercury column height by atmospheric pressure

• By dividing the mercury column height by atmospheric pressure

What does a negative gauge pressure indicate?

• The pressure inside is above atmospheric pressure

• The pressure inside is zero

• The pressure inside is below atmospheric pressure

• The pressure inside is equal to atmospheric pressure