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Class 11
Chemistry
The s Block Elements
describe the importance of the following i lime...

Question:
Describe the importance of the following: (i) limestone (ii) cement (iii) plaster of paris.

Answer:

(i) Chemically, limestone is CaCO₃.

Importance of limestone

(a) It is used in the preparation of lime and cement.

(b) It is used as a flux during the smelting of iron ores.

(ii) Chemically, cement is a mixture of calcium silicate and calcium aluminate.

Importance of cement

(a) It is used in plastering and in construction of bridges.

(b) It is used in concrete.

(iii) Chemically, plaster of Paris is 2CaSO₄.H₂O.

Importance of plaster of Paris

(a) It is used in surgical bandages.

(b) It is also used for making casts and moulds.

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Question:
Describe the importance of the following: (i) limestone (ii) cement (iii) plaster of paris.

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Question:
Describe the importance of the following: (i) limestone (ii) cement (iii) plaster of paris.