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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.
Explain the Filiform papillae These are long and slender and are the smallest of the three types of papillae. They are found to be most numerous on the edges and anterior two t
what is the economic importance of phylum coelenterata
please explain cholecsystikinin and the gallbladder functions
An aneroid barometer The corrugated rubber tube from a gas mask, or a cycle grip, can be used to make a model aneroid barometer. No huge accuracy is to be expected due to the m
Explain the Duodenum The first part of the small intestine is called the diodenum. It is about 10 inches in length. At the mid-point of the duodenum, there is a common opening
Explain how Insulin Secretion Regulated It is interesting to note that blood sugar level itself controls insulin secretion. How? When blood sugar level rises, insulin secretion
Test for studying suitable chemical treatment for changing the chemical nature of iodine Reactivity of iodine is tested with 1. Water and, 2. Sodium thiosulphate soluti
Which type of rock is critical for the formation of geysers? Liquid rock is required for geysers to form in the form of what is known as magma - which is the geological name fo
do you have a protocol propogating HSV-2 in a VERO cells
Water extinguishers : Direct the jet at the base of the flame and keep it moving across the fire. Attack a fire which is spreading vertically at its lowest point and follow th
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