ETD Quiz (Module 4)

Mixture of ice and water form a

• homogeneous system

• heterogeneous system

• mixed property

• static system

 What is the state, at which saturated liquid line with respect to vaporisation and saturated vapour line on p-v diagram of pure substance, meet called?

• saturation state

• critical state

• vaporisation state

• superheated vapour state

The temperature at which a pure liquid transforms into vapour at constant pressure is called as

• vaporisation temperature

• normal temperature

• saturation temperature

• none of the above

The region where fusion curve, vapourisation curve and sublimation curve meet is called

• critical point

• triple point

• saturation point

• boiling point

The energy required to raise a given mass of a liquid to it’s boiling point

• latent heat

• super heat

• sensible heat

• all of the above

In h-s diagram if the point is exactly on saturated vapor line, then it is known as

• wet steam

• super heated steam

• pure liquid

• dry steam

 Dryness fraction is

• mass of dry steam/ mass of wet steam containing dry steam

• mass of wet steam containing dry steam/mass of dry steam

• mass of wet steam / molecular weight

• molecular weight / mass of wet steam

Critical pressure of steam is

• 1 bar

• 2.212 bar

• 221.2 bar

• 22.1 bar

Triple point temperature for water is

• 150 degree celcius

• 0.01 degree celcius

• 0.01 Kelvin

• 100 degree celcius

Wet steam is in which temperature?

• Critical temperature

• Saturated temperature

• More than boiling temperature

• Less than boiling temperature