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Soap forms scum with following saltsA. Mgcl2B. NaCl C. NaCO3D. NaHCO3 |
Answer» <html><body><h3><em><strong>Answer:</strong></em></h3><h3><em><strong>Water is nature’s most wonderful, abundant and useful compound. Water is not only <a href="https://interviewquestions.tuteehub.com/tag/essential-975317" style="font-weight:bold;" target="_blank" title="Click to know more about ESSENTIAL">ESSENTIAL</a> for</strong></em></h3><h3><em><strong>the lives of animals and plants, but also occupies a unique position in industries. It is widely used in</strong></em></h3><h3><em><strong>drinking, bathing, sanitary, washing, irrigation, fire-fights, air-conditioning and also production of</strong></em></h3><h3><em><strong>industrial <a href="https://interviewquestions.tuteehub.com/tag/materials-1089380" style="font-weight:bold;" target="_blank" title="Click to know more about MATERIALS">MATERIALS</a>. The distribution of water on the Earth’s surface is extremely <a href="https://interviewquestions.tuteehub.com/tag/uneven-1437181" style="font-weight:bold;" target="_blank" title="Click to know more about UNEVEN">UNEVEN</a>. Only 3% Of</strong></em></h3><h3><em><strong>freshwater (69% resides in glaciers, 30% underground, and less than 1% is <a href="https://interviewquestions.tuteehub.com/tag/located-543617" style="font-weight:bold;" target="_blank" title="Click to know more about LOCATED">LOCATED</a> in lakes, rivers and</strong></em></h3><h3><em><strong>swamps.) of water on the surface is <a href="https://interviewquestions.tuteehub.com/tag/fresh-1000193" style="font-weight:bold;" target="_blank" title="Click to know more about FRESH">FRESH</a>; the remaining 97% resides in the ocean. Looked at another</strong></em></h3><h3><em><strong>way, only one percent of the water on the Earth’s surface is usable by humans, and 99% of the usable</strong></em></h3><h3><em><strong>quantity is situated underground.</strong></em></h3></body></html> | |