Gaurav took an empty plastic bottle, turned 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) Bubble of air came out from the bottle. |
(ii) Some water entered the bottle. |
(iii) Only 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? |
A) (i) and (ii)
B) (iv) only
C) (iii) and (iv)
D) (i) only
E) None of these
Correct Answer: A
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