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How to prepare hydrogen
Hydrogen can be prepared from a dilute acid, like as hydrochloric or sulphuric, when it is chemically reacted with a metal like as zinc. The acid may be secured from a drug store.
advantages and disadvantages of proroza
is a grassland a type of landform
How to mount fossils If you occur to live in a locality where fossils are plentiful, it will be interesting to have the peoples make a fossil collection for the school museum.
Procedure : Unscrew the plug top with the help of a screw driver. Remove one of the screws on the wire clamp and loosen the other. Cut away about 50 mm of the outer sheath of the
For highly volatile liquid wastes Highly volatile liquid waste could be disposed of by effective ventilation until the liquid completely evaporates. Example: Diethyl ether.
The difference between hard and soft water Collect some hard water from a stream(or make some as defined in the next experiment). Also secure some soft water like as rain wate
how to test for starch
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Let us recall briefly what all we have learnt about fire hazards in this unit. Fire accident can happen due .to a number of reasons, like, flammable liquids, faulty electrical and
Explain Sympathetic - Nerves System Sympathetic, as the word suggests, means to sympathize. The body sympathizes during fight, flight and fright reaction. For example, have you
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