answer the question in brief
1. how is common salt prepared on a commercial scale ?
2. list five methods of separating solid mixture ?
3. suggest an easy way to separate a mixture of sand and salt.
4. why do we level air and soil a mixture?
5. explain adulteration and how it is it bad practice ?
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Answer:
1.Sea water is trapped in large, shallow pools and allowed to stand there. The sun's heat evaporates the water slowly and common salt is left behind. This impure common salt obtained has impurities and is hence purified to obtain pure common salt by recrystallization.
2.Some of the common methods of separating substances or mixtures are:
Handpicking.
Threshing.
Winnowing.
Sieving.
Evaporation.
Distillation.
Filtration or Sedimentation.
Separating Funnel.
3.Separating Sand and Salt
Probably the easiest method to separate the two substances is to dissolve salt in water, pour the liquid away from the sand, and then evaporate the water to recover the salt.
4. One example of a mixture is air. Air is a homogeneous mixture of the gaseous substances nitrogen, oxygen, and smaller amounts of other substances. ... Mixtures are unlike chemical compounds, because: The substances in a mixture can be separated using physical methods such as filtration, freezing, and distillation.
5. Generally, if a food contains a poisonous or deleterious substance that may render it injurious to health, it is adulterated. For example, apple cider contaminated with E. coli O157:H7 and Brie cheese contaminated with Listeria monocytogenes are adulterated.
With an increasing demand for organic and healthy food, most of the food that we consume today has its own side-effects, caused mainly due to adulteration. Consuming adulterated food can lead to harmful effects on health such as cancer, infertility, brain damage, etc.
hope it will help you..........❣️
Answer:
yes answers of Kristu is correct