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Gloves : Gloves should be worn when transferring toxic, radioactive and carcinogenic compounds, irritants and corrosive liquids. The practice of wearing rubber gloves continuously for laboratory work is not recommended, as the hands become very moist and sweaty. Skin infection may result. Rubber gloves also make it difficult to grip wet glass and, serious accidents may result from dropped bottles or glassware.
Describe the factors which decide the broad area of scientific activity?
Ecosystem: As far as we know, our earth is the only planet where life exists, though scientists su constantly searching for signs of life on other heavenly bodies. You have al
Frost in the classroom Frost can be made in the classroom by using a tall metal container like as a tin can. Pack the can with exchange layers of ice and salt, using about doub
Neptune The eigth planet, Neptune, was discoveted in 1846 by astronomer Johann Gottfried Galle. We have already told you the story of its discovery in last. It is so f
When, in the geological time scale, did dinosaurs first appear: Triassic
Personal Protective Devices : We shall now discuss the details of protective devices required for safety in a laboratory. The aim of protective devices is to minimise the risk of
connect 2 spring balances with their hooks. Ask partner to hold one end of the balance while hold the other end horizontally. Pull the spring balance while your partner just hold t
What is the momentum of a man weighing 60 kg moving at 50 m/s
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
if a population of deer found a new food source in there ecosystem what would be the most likely outcome
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