Advertisements
Advertisements
प्रश्न
The liquid air has three components X, Y and Z whose boiling points are : –186°C, –183°C and –196°C,
respectively. When liquid air is fed into a tall fractional distillation column from near its bottom and warmed
up slowly :
(a) Which component will be collected from near the bottom of the fraction distillation column ? Why ?
(b) Which component will be collected from the top part of the fractional distillation column ? Why ?
(c) Which component will be collected from the middle part of the fractional distillation column ? Why ?
(d) What could the component X, Y and Z be ?
उत्तर
- Y will be collected from the area near the bottom of the fractional distillation column because it has highest boiling point (−183°C).
- Z will be collected from the top part of the fractional distillation column because it has lowest boiling point (−196°C).
- X will be collected from the middle part of the fractional distillation column because it has a boiling point −186°C, which is lower than that of Y but higher than that of Z.
- X is liquid argon, Y is liquid oxygen, and Z is liquid nitrogen.
APPEARS IN
संबंधित प्रश्न
Liquids have definite volume but do not have definite shape.
What are the two conditions for the interconversion of states of matter ?
Explain why air is used to inflate tyres.
Name one element, one compound and one mixture.
What are the two types of pure substances? Give one example of each type.
Which of the following substances are elements ?
Water, Salt, Mercury, Iron, Marble, Diamond, Wood, Nitrogen, Air, Graphite, Hydrogen, Oxygen, Sugar, Chlorine
State one property in which a solution of sugar in water resembles a mixture of sugar and sand, and one property in which it differs from it.
Name a metal which forms amalgams.
What is the most common way of expressing the concentration of a solution ?
What difference in the properties of oil and water enable their separation by a separating funnel ?
Name the process by which common salt is obtained from sea-water.
Name the process by which all the dye can be recovered from black ink.
How will you separate a mixture of iron filings and powdered carbon ?
How can you obtain pure water from a salt-water mixture (or salt-solution) ? Draw a neat and labelled diagram of the apparatus you would use to obtain pure water from a salt-water mixture (or salt-solution).
A solid mixture contains four constituents P, Q, R and S. P consists of tiny grains and it is mixed with
cement for plastering the walls. Q is a white solid which is recovered on a large scale from sea water by the
process of evaporation. R is in the form of tiny particles of a material whose corrosion is called rusting. And
S is a white solid which is used in making ordinary dry cells.
- What could P, Q, R and S be ?
- How would you separate a mixture containing P, Q, R and S ?
Which of the following are homogeneous in nature?
(i) ice
(ii) wood
(iii) soil
(iv) air
In Aerosol the dispersed phase is liquid and the dispersion medium is gas.
Liquids cannot be compressed and they have fixed volume.
Define the term matter.
