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Plaster of Paris
Secure some plaster of Paris and mix a small amount with water. It must be worked quickly or it will harden whereas being mixed. Place the mixture in moulds and let it set unless very hard. Study the appearance and properties of the samples. 3 Collections of building materials Collect samples of all the dissimilar types of rock or mineral building materials available in your locality like as marble, granite, slate, limestone, brick, cement, plaster, etc. These may be added to your collection after proper labels have been close to the samples
Why are clouds White? Why does a day have 24 hours? Answer: A cloud is a visible accumulation of very tiny water droplets or solid ice that float in the air. Clouds are usuall
Resource Energy: The demand for energy doubles every 14 years and is taken as one of the indicators of development of a country. India, with 16% of the world's population c
why does water erupt from geysers?
Non-Specific Defence Mechanism The non-specific defence mechanism is implemented for different types of infections. It resists infection in two ways, firstly, by blocking the e
Drinking straw hydrometer Procure a drinking straw or a stout natural straw about 20 cm long. If it is not 'water-proof' dip it in melted candle wax and permit it to dry. Seal
Question 1. With the help of an example, explain the importance of patient preparation in CT scanning? 2. Why Radiation protection & safety aspects are necessary in a radiol
Explain Haemopoietic function Gastric juice contains the intrinsic factor, which is essential for the absorption of vitamin B 12 . Vitamin B 12 present in food combines with i
affinities of ctenophora with platyhelminthes
Another balloon experiment Stretch a rubber balloon over the neck of a little bottle. Place it in the receiver jar and delete some of the air with the pump. What happens? How d
Digestion in the Mouth The mouth receives food. The tongue serves in swallowing, manipulating the food for chewing and in perceiving taste. The teeth mechanically subdivide
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