Advertisements
Advertisements
Question
How is common salt obtained from sea-water?
Solution
Common salt is obtained from sea water by the process of evaporation through the sun’s heat, which leaves behind crude common salt. Crude salt is further purified to remove impurities as it has some other salts mixed with it.
APPEARS IN
RELATED QUESTIONS
State what would you observe when Washing Soda Crystals are exposed to the atmosphere
From the list of the following salts choose the salt that most appropriately fits the
description is given in the following:
[AgCl, MgCl2, NaHSO4, PbCO3, ZnCO3, KNO3, Ca(NO3)2]
On heating, this salt gives a yellow residue when hot and white when cold
Complete and balance the following chemical equations:
`NaCl + NH_3 + H_2O +CO_2`→
What will be the colour of litmus in an aqueous solution of ammonium chloride salt?
State one observation for each of the following :
Lead nitric is heated strongly in a test tube.
State what would you observe when :
Washing soda crystals are exposed to the atmosphere.
Answer the questions below relating your answers only to salts in the following list: Sodium chloride, anhydrous calcium chloride, copper sulphate-5-water?
- What name is given to the water in the compound copper sulphate-5-water?
- If copper sulphate-5-water is heated, anhydrous coppersulphate is formed. What is its colour?
- By what means, other than healing, could you dehydrate copper sulphate-5-water and obtain anhydrous coppersulphate?
- Which one of the salts in the given list is deliquescent?
Sodium carbonate is a basic salt because it is a salt of a ____________.
One of the constituents of baking powder is sodium hydrogencarbonate. The other constituent is :
The chemical name of plaster of Paris is ______.