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Soap forms scum with following saltsA. Mgcl2B. NaCl C. NaCO3D. NaHCO3​

Answer»

Answer:

Water is nature’s most wonderful, abundant and useful compound. Water is not only ESSENTIAL for

the lives of animals and plants, but also occupies a unique position in industries. It is widely used in

drinking, bathing, sanitary, washing, irrigation, fire-fights, air-conditioning and also production of

industrial MATERIALS. The distribution of water on the Earth’s surface is extremely UNEVEN. Only 3% Of

freshwater (69% resides in glaciers, 30% underground, and less than 1% is LOCATED in lakes, rivers and

swamps.) of water on the surface is FRESH; the remaining 97% resides in the ocean. Looked at another

way, only one percent of the water on the Earth’s surface is usable by humans, and 99% of the usable

quantity is situated underground.



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