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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.
economic importance
Energy Flow in the Ecosystem The principal source of energy for any ecosystem is sunlight. All food materials that we or other animals consume are manufactured directly or i
A solid compound whose internal structural pattern is expressed as plane faces that can be seen with the unaided eye is generally called as a: Crystal
Why does marble rarely contain fossils? This is due to of the way that it is formed. When you have a rock that is formed bymetamorphosis then it has been created by heat and pres
Explain the Intestinal Phase Rest 10% of the total gastric secretion is discharged in this phase. When partially digested contents of the stomach reach the duodenum, presenc
Explain the Water balance function of the kidney Water is one of the most important constituent in the daily diet. You are already aware of the roles it plays in our body. Main
Question 1 Differentiate between types of clinical trials and bring out the importance of SAD Studies and MAD Studies Question 2 What is the difference between randomization
What is the mode of nutrition in tiger?
Belt-drive: The beltdrive is a mmpratively simpler device than gearing for transmission of power and for increasing or decreasing the speed of motion. Beltdrive came to India
Ask quesExplain that your intention is to investigate a variety of combinations of pipe material, insulation material and size which you could potentially consider when deciding on
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