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Lab hygiene : The need for continuous attention to hygiene in any type of laboratory cannot be overemphasised. Any spillage of chemicals, battery acid, blood, plasma, serum, etc. must be cleaned up at once from the bench, floor or other contaminated equipment. Traces of chemicals or other harmful materials can easily be transferred from the fingers to the lips or eyes where considerable damage may result.
What determines sinking and floating? Shape a piece of lead, tin or aluminium foil into the form of a little boat and float it on the water in a pan; now wad the metal foil fro
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what are the causes of volcanic eruption ?
Factors decide the broad area of scientific activity
Fertilizers pollute our ____system when____fertilizers run off from_____and animal______runs off from______and________.
The difference between weight and pressure Make two square blocks of wood, one much lesser than the other, and link them together as shown in the diagram. Press every of these
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respiration in different animals
What is a chemical formula? A chemical formula is a way of representing molecules without drawing them. The chemical formula shows the ratio of atoms that form any given molecu
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