61) Free surface of a liquid tends to contract to the smallest possible area due to force of

surface tension

viscosity

friction

cohesion

Answer is:

surface tension

Fluid Mechanics MCQ with Answers

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62) A bucket of water is hanging from a spring balance. An iron piece is suspended into water without touching sides of bucket from another support. The spring balance reading will

increase

decrease

remain same

increase/decrease depending on depth of immersion

Answer is:

remain same

63) Falling drops of water become spheres due to the property of

adhesion

cohesion

surface tension

viscosity

Answer is:

surface tension

64) A liquid would wet the solid, if adhesion forces as compared to cohesion forces are

less

equal

less at low temperature and more at high temperature

Answer is:

65) If cohesion between molecules of a fluid is greater than adhesion between fluid and glass, then the free level of fluid in a dipped glass tube will be

higher than the surface of liquid

the same as the surface of liquid

lower than the surface of liquid

unpredictable

Answer is:

lower than the surface of liquid

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61) Free surface of a liquid tends to contract to the smallest possible area due to force of

surface tension

Fluid Mechanics MCQ with Answers

Related Fluid Mechanics MCQ with Answers

62) A bucket of water is hanging from a spring balance. An iron piece is suspended into water without touching sides of bucket from another support. The spring balance reading will

remain same

63) Falling drops of water become spheres due to the property of

surface tension

64) A liquid would wet the solid, if adhesion forces as compared to cohesion forces are

more

65) If cohesion between molecules of a fluid is greater than adhesion between fluid and glass, then the free level of fluid in a dipped glass tube will be

lower than the surface of liquid

Fluid Mechanics MCQ with Answers