Question

(e) The freshly sand papered surface of a metal has​

Answer 1

Answer:

It is a material that floats on the surface of water and is Sand and pebbles are grouped differently because box in which he has following objects plastic bottle, tin cans, iron nails, paper boats, An iron smith, look out for freshly cut surfaces of metal rods to see if they have lustre.

Answer 2

Answer:

we all know that sand paper has a rough surface which is due to the embedded sand particles these particles when observed under microscope have sharp and irregular surface so when we scrape the metal sheet with these papers they create scratches on the surface of the metal sheet.

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