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Scutching refers to the process of cleaning cotton of its seeds and other impurities. A scutching machine f ...ch turn very quickly, strike the cotton hard and knock the seeds out. This process is done over a series of parallel bars so as to allow the seeds to fall thr

...on can be enhanced by short contact with [[oxidizing acid]]s like [[nitric acid]]. Passivated chromium is stable against acids. The opposite effect can be ...llowing is the [[Pourbaix diagram]] for chromium in pure water, perchloric acid or sodium hydroxide:<ref name="Crspeci"/><ref name="medusa">Ignasi Puigdome

| OtherCpds = [[methanol]]<br/>[[formic acid]] ...maldehyde quickly, so it does not accumulate, and is converted to [[formic acid]] in the body.

| Name = Sulfuric acid | ImageFile = Sulfuric-acid-2D-dimensions.svg