15. a. How is common salt obtained from sea water? (2)
b. List 2 other applications of this method in our daily life.
Answers
Answer:
Salt from sea water is obtained by the process of evaporation. ... The sea water evaporates due to the sun's heat and solid salt is left behind. The left salt is collected and refined to get purified salt. Hence, salt is obtained from sea water by evaporation.
Used in cooking food as well as for cooking gas.
Used as a preservative in pickles and in curing meat and fish.
Used in the manufacture of soap.
Answer:
a) common salt is taken from the water by evaporation. the method is that when some salt crystals are found there is much water content in them, hence they are evaporated and the salt crystals are then purified in factories.
b) we can take examples of drying clothes in the sun: The water present in the clothes when they are washed is removed by the process of evaporation and drying of wet floors is also an example of evaporation.
Explanation:
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