Raghav dipped an empty bottle vertically in a trough of water as shown in picture 1. He found that water did not enter the bottle. However, when he tilted the bottle slightly, he found bubbles coming out as shown in picture 2.
Figure
(a) Why did water not enter the bottle at first?
(b) Explain what Raghav observed when he tilted the bottle.

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Solution

(a) Water was not able to enter the bottle at first because of the presence of air in it.

(b) When Raghav tilted the bottle, the air of the jar came out as bubbles and subsequently, water entered the bottle. Therefore, he observed the formation of bubbles.

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Similar questions

Q. Raghav dipped an empty bottle vertically in a trough of water as shown in picture 1. He found that water did not enter the bottle. However, when he tilted the bottle slightly, he found bubbles coming out as shown in picture 2.
Figure
(a) Why did water not enter the bottle at first?
(b) Explain what Raghav observed when he tilted the bottle.

John and Sam were playing with empty bottles, John 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)Water did not enter the bottle when it was in inverted position.
(ii)Bubbles of air came out from the bottle as soon as it was tilted.
(iii)Some water entered the bottle
(iv)No bubbles formed, only water entered the bottle.

Which observations is/are correct?

oojho 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) 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 gets dissolved in water.

(iv) No bubbles formed, only water entered the bottle

Which observations is/are correct?

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(a) Water was not able to enter the bottle at first because of the presence of air in it.(b) When Raghav tilted the bottle, the air of the jar came out as bubbles and subsequently, water entered the bottle. Therefore, he observed the formation of bubbles.

(a) Water was not able to enter the bottle at first because of the presence of air in it.

(b) When Raghav tilted the bottle, the air of the jar came out as bubbles and subsequently, water entered the bottle. Therefore, he observed the formation of bubbles.