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Surface Tension – MCQs for Competitive Exams

 Surface Tension – MCQs for Competitive Exams

 multiple-choice questions on Surface Tension, curated for exams like Surface Tension – 50 MCQs for Competitive Exams

multiple-choice questions on Surface Tension, curated for exams like SSC JE, RRB JE, State PSCs, and other engineering entrance/technical exams. Questions include conceptual, numerical, and application-based patterns with answers.

1.      1. Which unit is used to measure surface tension?

·        A. N/m²

·        B. N/m

·        C. N

·        D. m/N

👉 Answer: B

2.      2. Surface tension is due to:

·        A. Adhesion

·        B. Gravity

·        C. Cohesion

·        D. Friction

👉 Answer: C

3.      3. The dimensional formula of surface tension is:

·        A. [ML⁻¹T⁻²]

·        B. [MT⁻²]

·        C. [M⁰LT⁻²]

·        D. [M¹L⁰T⁰]

👉 Answer: B

4.      4. Capillary rise is more in tubes with:

·        A. Larger radius

·        B. Smaller radius

·        C. Equal radius

·        D. Not dependent

👉 Answer: B

5.      5. If the radius of a droplet is halved, the excess pressure becomes:

·        A. Half

·        B. Double

·        C. Same

·        D. One-fourth

👉 Answer: B

6.      6. Excess pressure inside a soap bubble is given by:

·        A. 2T/r

·        B. 4T/r

·        C. T/r

·        D. T/2r

👉 Answer: B

7.      7. Water rises in a capillary tube due to:

·        A. Viscosity

·        B. Surface tension

·        C. Gravity

·        D. Pressure

👉 Answer: B

8.      8. The surface tension of liquids generally:

·        A. Increases with temperature

·        B. Decreases with temperature

·        C. Remains constant

·        D. First increases then decreases

👉 Answer: B

9.      9. The angle of contact for water and glass is:

·        A. 0°

·        B. 30°

·        C. 90°

·        D. 120°

👉 Answer: A

10.  10. Which liquid has the highest surface tension at room temperature?

·        A. Water

·        B. Mercury

·        C. Alcohol

·        D. Oil

👉 Answer: B and other engineering entrance/technical exams. Questions include conceptual, numerical, and application-based patterns with answers.

1.      1. Which unit is used to measure surface tension?

·        A. N/m²

·        B. N/m

·        C. N

·        D. m/N

👉 Answer: B

2.      2. Surface tension is due to:

·        A. Adhesion

·        B. Gravity

·        C. Cohesion

·        D. Friction

👉 Answer: C

3.      3. The dimensional formula of surface tension is:

·        A. [ML⁻¹T⁻²]

·        B. [MT⁻²]

·        C. [M⁰LT⁻²]

·        D. [M¹L⁰T⁰]

👉 Answer: B

4.      4. Capillary rise is more in tubes with:

·        A. Larger radius

·        B. Smaller radius

·        C. Equal radius

·        D. Not dependent

👉 Answer: B

5.      5. If the radius of a droplet is halved, the excess pressure becomes:

·        A. Half

·        B. Double

·        C. Same

·        D. One-fourth

👉 Answer: B

6.      6. Excess pressure inside a soap bubble is given by:

·        A. 2T/r

·        B. 4T/r

·        C. T/r

·        D. T/2r

👉 Answer: B

7.      7. Water rises in a capillary tube due to:

·        A. Viscosity

·        B. Surface tension

·        C. Gravity

·        D. Pressure

👉 Answer: B

8.      8. The surface tension of liquids generally:

·        A. Increases with temperature

·        B. Decreases with temperature

·        C. Remains constant

·        D. First increases then decreases

👉 Answer: B

9.      9. The angle of contact for water and glass is:

·        A. 0°

·        B. 30°

·        C. 90°

·        D. 120°

👉 Answer: A

10.  10. Which liquid has the highest surface tension at room temperature?

·        A. Water

·        B. Mercury

·        C. Alcohol

·        D. Oil

👉 Answer: B
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