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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.
Nuclear Fission: Splitting the Atom You know that atoms are made up of a nucleus and electrons moving around the nucleus, and the nucleus is made up of protons and neutron
Apart from acidic waste, bromine waste is also treated using this method. Exercises Examples: Perchloric acid, sulphuric acid, hydrochloric acid, nitric acid, phosphoric acid
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
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Enumerate the role of Soil algae on soil flora Soil algae are microscopic, chlorophyll containing organisms, being the simplest chlorophyllous plants. These are phototrophic ae
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INTRODUCTION : You may find this exercise as a practical illustration for the procedure generally followed in the disposal of unserviceable and obsolete items in a laboratory. It
Nutrient groups and their functions: We should know that our body is made up of different chemical substances which are related to the food we take. Scientists have determine
Digital X-Ray, Inc., has introduced a new line of equipment that may revolutionize the medical profession. Because of the new technology involved, potential users of the equipment
What is the difference among the geoid and the surface of the earth? The geoid is an visualize surface that equal with the average (mean) sea level around the world. Thus, i
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