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1 year ago by Jaat
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<TITLE>test the presence of carbon dioxide gas </Title>
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<H2>experiment to test the presence of carbon dioxide gas
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<LI>take about a teaspoonful of vinegar in a test tube.
<LI>add a pinch of baking soda to it.
<LI>you should hear a hissing sound and see bubbles of gas coming out.
<LI>pass this gas through freshly prepared lime water.
<LI>the lime water turns milky.
<LI>the milky appearance of lime water signifies the presence of carbon dioxide.
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1 month ago by Pooja Sharma