Advertisements
Advertisements
प्रश्न
How would you separate iodine from a mixture of iodine and common salt ?
उत्तर
We would separate iodine from a mixture of iodine and common salt by the process of sublimation. In the process, iodine sublimes on heating, whereas salt does not. Salt has a melting point higher than that of iodine. Therefore, a mixture of iodine and sodium chloride can be separated by using a sublimation apparatus, where solid iodine is collected by condensation of the mixture.
APPEARS IN
संबंधित प्रश्न
Select the correct alternative
The molecules can move freely anywhere in
- gases
- liquids
- solids
- none of the above
Name the processes involved in two cases.
Define the following term of Atom .
What name is given to those elements which are neither good conductors of electricity like copper nor insulators like sulphur ?
Name a metal which has no fixed shape.
“Is malleable and ductile” best describes :
In the following set of substances, one item does not belong to the set. Select this item and explain why it does not belong to the set :
Hydrogen, Oxygen, Steam, Chlorine
What is meant by the concentration of a solution ?
What is the general name of the process by which tea-leaves are separated from prepared tea ?
Describe a method to separate a mixture of common salt and sand.
How will you separate camphor, common salt and iron nails from their mixture ?
Describe a method for separating a mixture of iron filings and sulphur powder other than that by using a magnet.
Which of the following cannot be separated from air by the process of fractional distillation ?
One of the following does not undergo sublimation. This one is :
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 ?
Asmita went to buy an earthen pot. There she saw many things kept for sale.
What is the difference between a substance and an object?
The physical state of water at 373 K is ______.
Higher the temperature, the higher the kinetic energy of particles.
The fluidity of solids: ______.
Define the term matter.
