Archana pours some water on a lump of dry soil , and sees some bubbles coming out of the soil . Based on this observation alone , which gas could be present in the soil ?
A. it must be oxygen
B. it must be carbon dioxide
C. it must be water vapour
D. we cannot say for sure which gas it is
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a) it must be oxygen.
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Dear friend,
Your answer is OPTION D since gases are filled between soil and not any specific gas are filled between them.
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