Erasure of a writing using rubber is called :
UGC NET - 2012,
Answer: A
The erasure of a writing using a rubber is called mechanical erasure, option A. A rubber removes the writing by rubbing off the ink or the pencil from the surface, together with some of the paper fibres, which can leave signs of abrasion that the examiner can see. A chemical erasure (D) uses a chemical to bleach or remove the ink, and the terms soft erasure (B) and hand erasure (C) are not standard names for the methods. Mechanical erasure can be recognised by the roughened paper surface, the disturbed fibres, and the thinning of the paper, which can be studied under oblique light and a microscope.
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