Author: Basanta Adhikari
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Materials Used in Daily Life Science Notes Class 10
It is fine grey powder of calcium silicate and calcium aluminate is called cement. Cement Q. How is cement manufacture in industry? Ans: Cement is manufactured by heating the mixture of lime stone (Caco3)and special type of clay (Al2 O3 .Sio2) in the ratio of 2:1 at 1600 degree centigrade. Q. Why is calcium oxide…
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Some Gases Science Notes Class 10
Carbon Dioxide Carbon dioxide is a acidic gas/ Dry ice. It is because as it reacts with water it gives carbonic acid. i.e Molecular Weight of co2 gas is c+2O= 12+ 2*16= 44amu co2 is polar covalent compound because it is formed by mutual sharing of valence electron between atom of different non-metal. Molecular structure…