Properties of Solids & Liquids-Application of Surface Tension (NEET Physics): Questions 1 - 3 of 8

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Question number: 1

» Properties of Solids & Liquids » Application of Surface Tension

MCQ▾

Question

An air bubble in a water tank rises from the bottom to the top. Which of the following statements are true?

(1) Bubble rises upwards because pressure at the bottom is greater than that at the top.

(2) As the bubble rises, its size increases.

(3) Bubble rises upwards because pressure at the bottom is less than that at the top.

(4) As the bubble rises, its size decreases.

select the correct answers and mark it according to the following codes:

Choices

Choice (4) Response
a.

2 and 4 are correct

b.

1 and 3 are correct

c.

1, 2 and 3 are correct

d.

1 and 2 are correct

Question number: 2

» Properties of Solids & Liquids » Application of Surface Tension

MCQ▾

Question

The temperature at which the surface tension of water is zero

(1) 370° C

(2) 0° C

(3) Slightly less than 647 K

(4) 277 K

select the correct answers and mark it according to the following codes:

Choices

Choice (4) Response
a.

2 and 4 are correct

b.

1, 2 and 3 are correct

c.

1 and 2 are correct

d.

1 and 3 are correct

Question number: 3

» Properties of Solids & Liquids » Application of Surface Tension

Assertion-Reason▾

Assertion (Ꭺ)

A large soap bubble expands while a small bubble shrinks, when they are connected to each other by capillary tube.

Reason (Ꭱ)

The excess pressure inside bubble (or drop) is inversely proportional to the radius.

Choices

Choice (4) Response
a. Ꭺ is false but Ꭱ is true
b. Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ
c. Both Ꭺ and Ꭱ are false
d. Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

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