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Question
Which test should be made before collecting hydrogen in a gas jar?
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Solution
Test: Collect some amount of gas in a test tube and take it to a flame.
If the gas burns quietly, then there is no more air in the flask.
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Hydrogen burns in oxygen to form
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FILL IN THE BLANK
........................... means ‘maker of water’ in Greek.
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\[\ce{MgCl2<-HCl->FeCl2}\]
