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Oil spreads over the surface of water wh...

Oil spreads over the surface of water whereas water does not spread over the surface of the oil, due to

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The correct Answer is:
Because the surface tension of the oil is smaller than that of water
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MODERN PUBLICATION-MECHANICAL PROPERTIES OF FLUIDS-Revision Exercise (Very Short Answer Questions)
  1. Why a liquid rises more in a capillary with narrow bore than same with...

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  2. The surface tension of a liquid with rise of temperature.

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  3. Oil spreads over the surface of water whereas water does not spread ov...

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  4. When wax is rubbed on cloth becomes water proof, why?

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  5. Why the tip of the nib of a pen is split?

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  6. Define Viscosity. What are its units and dimensions?

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  7. What do you mean by coefficient of viscosity?

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  8. The dimensional formula of coefficient of viscosity is

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  9. Define 1 Pa-s.

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  10. State Stoke's law.

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  11. What do you mean by terminal velocity?

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  12. How terminal velocity depends on the radius of the falling body?

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  13. Discuss the effect of temperature on the viscosity of liquids and gase...

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  14. Discuss the effect of temperature on the viscosity of liquids and gase...

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  15. What is a streamline?

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  16. What is meant by critical velocity of a liquid?

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  17. What is a Reynold's number? What is its unit?

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  18. What is the nature of flow of a liquid if the Reynold's number for tha...

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  19. What are the porperties of a liquid satisfying the Bernoulli's theorem...

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  20. What will happen to the flow of a liquid if it passes through a region...

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