In 2nd activity Riya observed that:
(a)Lime water turns milky in test tube after some time.
(b)Lime water turns milky in test tube immediately.
(c)No change in color is observed.
(d)Lime water in test tube turns blue black.
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(a) is the right answer according to me...
as we exhale CO2 which turns lime water milky ...
hope u get it
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