1.

Causes effects and removal of scale and sludge​

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ANSWER:

So sudden high-pressure is developed, which may even cause explosion of the boiler. Removal of scales : (i) With the help of scraper or PIECE of wood or wire brush, if they are LOOSELY adhering. (ii) By giving THERMAL shocks (i.e., heating the boiler and then suddenly COOLING with cold water), if they are brittle.



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