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Saloni took a piece of burning charcoal and collected the gas evolved in a test tube.

(a) How will she find the nature of the gas ?
(b) Write down word equations of all the reactions taking place in this process.
Science - Main Course Book
Chapter 4. Materials: Metals and Non-metals


The gas she has collected is co2. because wham charcoal burns in presence of oxygen it forms co2. pass it through lime water (CaO) the lime water will turn milky. white coloured ppt will form which is CaCo3
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she can find nature of gas by putting it on wet litmus paper or universal indicator.
Formula of limewater is Ca(OH)2 cso is formula quicklime.
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