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Cement and concrete
Secure a small bag of Portland cement. Have the pupils mix it with water and put it in tin can covers, paper cups, or small pasteboard boxes unless it hardens. Study its appearance and its properties. Break a piece of cement and study it. Mix the dry cement with about twice as much sand or gravel. This will form concrete. After adding water and mixing thoroughly place it in moulds. Permit these to arden various days. Again study the appearance and the characteristics of these samples.
what is sorter''s disease
How has the earth changed since it was formed? Ans) The earth has changed particularly since it was formed. Earth was a ball of rock that was strike and changed by loads of imp
how is the soil colloidal material look like when ion and cation exchange capacity of the soil?
give examples for one energy transformed to another energy
Explain Bile pigments - Constituents of Bile The red blood cells are broken down when they are old (life span of red blood cell is 120 days). They are taken up by the reticuloe
The hospital Human Research Ethics Committee granted approval for the study protocol. Participants provided written informed consent. All participants were all over the age of 18 a
What is the rock cycle explain breifly? The rock cycle is the full "life" of a rock from its original formation to its demise through weathering, and rebirth through recrystall
examples of antifertility drugs
Paper manufacture: Paper was not used in India until the eleventh century. This Chinese invention of the first .century A.D. reached India mainly through the Ghorian conquerors
Explain about the Biosphere Besides the above two types of factors, biosphere (the living environment) is another important active soil forming agent. The activity of living
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