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what is dead burnt plaster?

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what is dead burnt plaster?

Posted by Muskan Arora 6 years, 11 months ago

CBSE > Class 10 > Science

4 answers

Yogita Ingle 6 years, 11 months ago

When plaster of Paris CaSO₄.1/2 H₂O is heated above 393 K, its water of crystallisation is lost and anhydrous Calcium sulphate is left that is known as a dead burnt plaster.

Chētnà Pandey✌️ 6 years, 11 months ago

When gypsum is heated at more than 323 k then it become dead brunt plaster which is can't used again.

Honey ☺☺☺ 6 years, 11 months ago

Also known as unhydrous calcium sulphate.

Honey ☺☺☺ 6 years, 11 months ago

When all the water molecules are vaporised from gypsum then dead burnt plaster is formed.

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