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Air expands when heated
To show that air expands when heated, fit an electric light bulb flask or a bottle with a single- whole stopper or cork which has a 30-cm length of glass tubing or a soda straw by it. Place the end of the tube in a small bottle of water. Heat the flask and view what happens. Heat the flask until a considerable amount of air has been separated and then cool the flask by pouring cold water over it or by rubbing with a piece of ice.
Enumerate in brief about the Earthworms There are several species of earthworms, having slender cylindrical bodies with varying diameters. These organisms ingest the dead organ
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Soil Pollution: The problem of soil pollution is rapidly increasing in the rural, urban and industrial areas due to unscientific and irrational disposal of solid wastes gene
what are the list of animals of nematoda
Chemical Reactions of Amino Acids The chemical reactions of amino acids can be divided into three classes: i) Reactions of carboxylic group ii) Reactions of amino group
Obesity : Generally, fat people think that their overweight is due to their constitution and for heredity. It could be true in some cases. But have you ever come across a fat labou
what is soil erosion?
AIDS: You have learnt about infectious diseases. For centuries, death from infectious diseases was common and whole populations were often affected. One of the remarkable achi
Palaeontological Evidence: Palaeontology is a branch of earth sciences, which is essentially a study of plant and animal life in the past geological periods, millions of ye
To show the presence of nodules of nitrogen-fixing bacteria on the roots of legumes Carefully spade up some leguminous plant like as clover, alfalfa, soy-beans, cow peas, etc.
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