Boojho took an empty plastic bottle, turns it upside down and dipped its open mouth into a bucket filled with water. He then tilted the bottle slightly and made the following observations
i) Bubbles of air came out from the bottle

ii) Some water entered the bottle

iii) Nitrogen gas came out in the form of bubbles and oxygen got dissolved in water

iv) No bubbles formed, only water entered the bottle

Which observations is/are correct ?

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iii and iv

i only

iv only

i and ii

answer is A.

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Detailed Solution

When Boojho dips the bottle in water enters into the bottle and an air bubbles comes out from the bottle.

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