Question

Black Board and Chalk Piece:-
1. Name the raw materials used for production.
2. Find the places of their production.
3. Name the industrial category in which chalks are made?
4. How the Blackboard is made?
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Answer 1

1) chalk is made up of calcium carbonate (CaCO 3 ), a form of limestone and black board is made up of thin sheets of black or dark grey slate stone.

2) Chalk is made in western Europe south of Sweden and in England, notably in the chalk cliffs of Dover along the English Channel.

sorry I couldn't answer all the question because I don't know and also don't have charging in the phn

Answer 2

Answer:

1) calcium carbonate

2) places where mica Bentonite are widely present.