Absolute zero, pressure will occur, when the molecular momentum of the system becomes zero. A liquid will cease to exist as liquid at________________?

Related Mcqs:

1. Melting point & boiling points of liquid oxygen are respectively – 218.8°C & – 183°C, while the same for liquid nitrogen is – 210°C & – 195.8°C respectively. The difference in melting points of liquid oxygen & liquid nitrogen is not equal to 8.8 ?

   A. °C
   B. °F
   C. °K
   D. °R

2. Velocity of a gas in sound is not proportional to (where, T = Absolute temperature of the gas. P = Absolute pressure of the gas. y = Ratio of specific heats (Cp/Cv) ρ = specific weight of the gas) ?

   A. √T
   B. 1/√P
   C. √y
   D. 1/√ρ

3. Absolute zero pressure can be attained at a temperature of___________________?

   A. 0°C
   B. 50°K
   C. 0°R
   D. None of these

4. The critical pressure at which the latent heat of vaporization of steam becomes zero is _____________ Kg/cm2 ?

   A. 273.15
   B. 225.65
   C. 100.03
   D. 373.15

5. Change in volume of metals from absolute zero temperature to their melting points is___________________?

   A. Almost same for all metals
   B. Different for different metals
   C. Less for low melting point metals
   D. Less for high melting point metals

6. At absolute zero temperature, for any reaction involving condensed phases ?

   A. Δ G° = 0 , Δ H° = 0
   B. Δ H° = 0 , Δ S° = 0
   C. Δ S° = 0 , Δ E° = 0
   D. Δ S° = 0 , Δ Cp° = 0

7. The pressure outside a bubble/droplet of liquid is ________________ the internal pressure?

   A. Greater than
   B. Less than
   C. Equal to
   D. Unpredictable; depends on the bubble size

8. The laminar boundary layer thickness in zero pressure gradient flow over a flat plate along the x-direction varies as x0.5 while the thickness of turbulent boundary layer varies as (where, x = distance from the leading edge) ?

   A. x1.5
   B. x0.8
   C. x-1.5
   D. x-0.8

9. A gas which is collected over water becomes moistened due to water vapor, exerts its own partial pressure at the gas temperature, which is termed as its_______________?

   A. Aqueous tension
   B. Saturated humidity
   C. Vapor pressure
   D. Absolute humidity

10. Which of the following is a commonly used manometric liquid for low pressure range ?

    A. Ethyl alcohol
    B. Carbon tetrachloride
    C. Glycerol
    D. Ethylene glycol