Question

what is used to make black board

Answer 1

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A blackboard (also known as a chalkboard) is a reusable writing surface on which text or drawings are made with sticks of calcium sulfate or calcium carbonate, known, when used for this purpose, as chalk.

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Answer 2

Answer:

most modern black board are made up of porcelain enamel. also a very durable material is used to make the back is steel.