Advertisements
Advertisements
Question
Name the process by which common salt is obtained from sea-water.
Advertisements
Solution
Common salt is obtained from seawater by the process of evaporation.
APPEARS IN
RELATED QUESTIONS
Explain why steel is used to make railway lines.
Classify the following into elements and compounds :
- H2O
- He
- Cl2
- CO
- Co
Which of the following substances are elements ?
Water, Salt, Mercury, Iron, Marble, Diamond, Wood, Nitrogen, Air, Graphite, Hydrogen, Oxygen, Sugar, Chlorine
State two physical properties on the basis of which metals can be distinguished from non-metals.
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
Choose the correct answer.
A 15% alcohol solution means :
State whether the following statement is true or false :
Bread is an example of solid foam.
State whether the following statement is true or false :
Sponge is an example of solid sol.
Classify the following into true solutions and colloidal solutions:
Ink, Salt solution, Starch solution, Blood, Sugar solution
What difference in the property of two miscible liquids enables their separation by fractional distillation ?
Fill in the following blanks with suitable words :
The separation of liquids by fractional distillation is based on the difference in their .....................
Fill in the following blanks with suitable words :
The gases of air can be separated by fractional distillation of liquid air because they have different..............
Explain how, impure copper sulphate can be purified by crystallisation.
You are given a mixture of iodine in alcohol called tincture iodine. Which method will you use to recover both, iodine as well as alcohol, from this mixture ?
All the matter made of ______.
Give some examples of the Tyndall effect observed in your surroundings?
Non-metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non-malleable and are coloured.
Name a non-metal which exists as a liquid at room temperature.
Atoms or groups of atoms having a charge are called ______.
Liquids have ______.
