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Procedure
1. Soak the emptied glassware in disinfectant or liquid soap solution overnight. If you use disinfectant, dip the glassware in soap solution before washing, Rub clean the glassware with a brush and thoroughly clean with water.
2. Air dry the washed glassware by keeping them open in the tray. Cover the petriplates with the lids. Wrap the glassware with aluminium foil and then keep in the oven for 16 to 18 hours at 1 60°C for dry sterilization. You have already read in Unit 3 of LT-1 course about the functioning of a hot air oven. After sterilization you can reuse the glassware for further work.
3. Do not leave the sterilized glassware in the open. Pack them in& the packets/boxes until you use them next. You should sterilize the newly purchased glassware before using them by the method describe above.
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
Compare and contrast the characteristics of sound waves and electromagnetic
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Determine the Sieve Analysis Method of Soil texture As the name suggests sieve analysis is done using sieves and may give a true distribution of soil particles. This method i
Iron Age: We briefly surveyed the ideas and techniques of the early human beings, and traced the roots of science in the primitive culture. You also read about the emergence
Discuss main factors that influence mass movements. Ans) Things as if climate and food availability will make a big dissimilarity if it is too cold, too dry then people will re
Magma that reached the Earths surface is known as: Lava
Pieces classification by order
compare water stills and deionizer
Q.Name two biologically important compounds that contain both oxygen and nitrogen. Two biologically important compounds that contain both oxygen and nitrogen are: (i) Amino a
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