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Lab coats : The lab coat should fit well and should be buttoned up correctly at all times. Cotton lab coats are more suitable than those made from nylon as the former could absorb more liquid and offer more protection against spilled chemicals. An added advantage is that the cotton coats do not generate sparks by static electricity that might ignite highly flammable organic solvents. Nylon also melts when heated and can stick to the flesh. It also dissolves in some organic solvents.
Measuring atmospheric pressure with a bicycle pump A bicycle pump with the washer reversed as represents can be used to calculate atmospheric pres- sure. The piston can be made
Medicine: Aristocratic patronage for physicians and surgeons was not wanting, though, perhaps, surgeons did not enjoy a very high status in comparison to physicians. The Greek
Botany: In the Bronze and the Iron Ages, agriculture became the principal mode of production of man in all lands. It is, thus, not surprising that in India, botany and elementa
What is the earths core made of? Ans) The outer earth core is liquid and the inner is solid. Both parts are of alloy of two metals - iron and nickel, permitting the rise of the
what are the problems
describe the factors which decide broad area of scientific activity
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Fire Escapes : When a fire breaks out in a building, it is not unusual for people to panic. Sometimes flames can spread rapidly, especially if fanned by blow of air from open or b
Explain the term- lichens The lichens are able to extract nutrients from the rocks . They are capable of retaining water for a long time during which chemical processes take p
how do you find the contour interval
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