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प्रश्न
Describe the importance of the cement.
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उत्तर
Chemically, cement is a mixture of calcium silicate and calcium aluminate.
Importance of cement-
- It is used in plastering and in the construction of bridges.
- It is used in concrete.
संबंधित प्रश्न
Describe the importance of the limestone.
Describe the importance of the plaster of paris.
Suspension of slaked lime in water is known as ______.
Dehydration of hydrates of halides of calcium, barium and strontium i.e., CaCl26H2O, BaCl2.2H2O, SrCl2.2H2O, can be achieved by heating. These become wet on keeping in air. Which of the following statements is correct about these halides?
Several sodium compounds find use in industries. Which of the following compounds are used for textile industry?
(i) Na2CO3
(ii) NaHCO3
(iii) NaOH
(iv) NaCl
A substance absorbs \[\ce{CO2}\] and violently reacts with water. That substance is ______.
Initial setting of cement is mainly due to ______.
What are the products formed in sequence when excess of CO2 is passed in slaked lime?
The conversion of hydroxyapatite occurs due to presence of p - ions in water. The correct formula of hydroxyapatite is ______.
\[\ce{Y <-[\Delta, 205°C] CaSO4.2H2O ->[\Delta, 120°C] X}\]
X and Y are respectively:
The commercial name for calcium oxide is ______.
The substance not likely to contain CaCO3 is ______.
