Q10 (a). Saloni took a piece of burning charcoal and collected the gas evolved in a test tube.

 How will she find the nature of the gas?

Answers (1)

After burning the charcoal and collecting the gas evolved in the test tube, add a few drops of water in the test tube. Cover the test tube and shake it well. Then put a few drops of the solution on blue litmus paper and red litmus paper. If the blue litmus turns red, the nature of the gas is acidic. But if the red litmus turns blue, the gas is basic.

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