Advertisements
Advertisements
प्रश्न
Seema visited a Natural Gas Compressing Unit and found that the gas can be liquefied under specific conditions of temperature and pressure. While sharing her experience with friends she got confused. Help her to identify the correct set of conditions
विकल्प
Low temperature, low pressure
High temperature, low pressure
Low temperature, high pressure
High temperature, high pressure
Advertisements
उत्तर
Low temperature, high pressure
Evaporation, diffusion, and expansion of gases increase on raising the temperature. The evaporation rate increases because on increasing temperature, the kinetic energy of molecules increases, so the molecules present at the surface of the liquid leave the surface quickly and go into the vapour state. Diffusion and expansion of gases also increase as the molecules move more rapidly and try to occupy more space.
APPEARS IN
संबंधित प्रश्न
Select the correct alternative
The molecules can move freely anywhere in
- gases
- liquids
- solids
- none of the above
Name the terms for the change of vapour into a liquid.
When a gas jar containing air is inverted over a gas jar containing bromine vapour, the red-brown bromine vapour diffuse into air. Explain how bromine vapour diffuse into air.
Name one element, one compound and one mixture.
Fill in the following blanks with suitable words :
Brass is an alloy which is considered a ..............
“Is malleable and ductile” best describes :
Which of the following does not have a fixed melting point/boiling point ?
What is the concentration of a solution which contains 16 g of urea in 120 g of solution ?
Define Sol and give one example.
Define Aerosol Give one example.
Name the property of one of the constituents which can be used to separate a mixture of salt and iodine
Name the process which is used in milk dairies to separate cream from milk.
How is scrap iron separated from a heap of waste materials in factories?
With the help of a labelled diagram, describe the method of separating ammonium chloride from a mixture of ammonium chloride and common salt. Mention the difference in the properties of ammonium chloride and sodium chloride which has made this separation possible.
Pure copper sulphate can be obtained from an impure sample by the process of :
If there is a sudden shower, we take shelter under a roof at the roadside. Even though the rain does not fall on us directly, we get wet to some extent. Why ?
Define the term matter.
Atoms or groups of atoms having a charge are called ______.
Liquids cannot be compressed and they have fixed volume.
Gases change to liquid by the process of ______.
