NCERT In-text 4.5 — Q2 - Carbon and its Compounds
Question: People use a variety of methods to wash clothes. Usually after adding soap, they 'beat' the clothes on a stone, or beat it with a paddle, scrub with a brush or agitate it in a washing machine. Why is agitation necessary to get clean clothes?
Answer: 1. Agitation (beating, scrubbing, or machine washing) is essential for effective cleaning because it provides the mechanical energy needed to complete the cleaning process. 2. When soap dissolves i...
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