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A compressed air pop-gun
Use a straight piece of glass or plastic tubing of 1 or 2 cm in diameter and 15 or 20 cm in length. Make a piston by twisting some string on a pencil till it fits strongly in the tube. Put a small cork in the finish of the tube and push the piston in quickly
Explain the Cabinet Respiration Such an apparatus is used when the respiratory muscles are paralyzed by an injury or an infection. A cabinet respirator consists of a box in wh
Chemistry in golden era: Chemistry In the field of metallurgy too we notice some remarkable developmenk. Before the close of the sixteenth century, zinc was isolated by a pr
Medieval Science: We can record the sum total of the medieval achievement in the natural sciences in a few lines. It can be put down as a few notes on natural history a
Define age related changes in Endocrine system There is a decrease In blood concentration of the hormone / binding protein transport. Sensitive hormone receptors diminish. Age-
how semiconductor detector works
A model illustrating how an eclipse appears The sun is shown by an opal electric bulb shining by a circular hole 5 cm in diameter in a piece of blackened cardboard. The corona
Explain Maintenance of pH - Functions of Bile Maintenance of pH: Bile neutralises the hydrochloric acid and helps to maintain a suitable pH. This prevents the injurious effects
(friction is necessery evil)
Uses of Benzophenone
Gloves : Gloves should be worn when transferring toxic, radioactive and carcinogenic compounds, irritants and corrosive liquids. The practice of wearing rubber gloves continuously
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