In mosaic flooring, the surface is rubbed with __________ to make it smooth and polished.

In mosaic flooring, the surface is rubbed with __________ to make it smooth and polished. Correct Answer Pumice stone

In mosaic flooring, broken tiles of china glazed or of marble are used. They are cut in desired shapes and sizes and arranged in various patterns. In this type of flooring, pumice stone is used to make the surface smooth and polished.

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If a glass rod is rubbed with a silk cloth and an inflated balloon is rubbed with woollen cloth, which of the two will acquire a negative charge?
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