Home
Class 11
PHYSICS
Why an oil drop on a hot cup of soup spr...

Why an oil drop on a hot cup of soup spreads over when the temperature of the soup falls?

Text Solution

Verified by Experts

The surface tension of oil is more than that of hor soup. Due to it, an oil drop does not spread over the hot soup. When the temperature of the soup falls, the surface tension of oil becomes less than that of soup. Due to it, the oil drop starts spreading on the soup.
Promotional Banner

Topper's Solved these Questions

  • PROPERTIES OF BULK MATTER

    PRADEEP|Exercise Advanced problems for competitions|21 Videos

  • PROPERTIES OF BULK MATTER

    PRADEEP|Exercise NCERT Questions|73 Videos

  • PROPERTIES OF BULK MATTER

    PRADEEP|Exercise Solved Examples|159 Videos

  • PHYSICAL WORLD AND MEASUREMENT

    PRADEEP|Exercise Competiton Focus Jee Medical Entrance|18 Videos

  • RAY OPTICS

    PRADEEP|Exercise Problem For Practice(a)|25 Videos

Similar Questions

Explore conceptually related problems

Why are the droplets of mercury when brought in contact pulled together to form a bigger drop? Also state with reasons whether the temperature of this bigger drop will be the same, or more, or less than the temperature of the smaller drop.

Hot dilute soup was given by

When methanol is sprinkled over hot copper plate , the smell would be

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

A drop of water when spilled on floor spreads out . What is this due to ?

Early broth or hot dilute soup contained

Oil drop may……. On a hot water.

PRADEEP-PROPERTIES OF BULK MATTER-Conceptual Problems
  1. Explain why some oil spread uniformly on water, when other floats as d...

    Text Solution

    |

  2. Why surface tension concept is only held for liquids and not for gases...

    Text Solution

    |

  3. Why an oil drop on a hot cup of soup spreads over when the temperature...

    Text Solution

    |

  4. A bubble having surface tension T and radius R is formed on a ring of ...

    Text Solution

    |

  5. Why undergarments are usually made of cotton?

    Text Solution

    |

  6. Water is depressed in a glass tube whose inner surface is cotated with...

    Text Solution

    |

  7. Why does an iron needle float on clean water but sink when some deterg...

    Text Solution

    |

  8. When one end of a tube of radius r is immersed vertically in a liquid ...

    Text Solution

    |

  9. It is better to wash the clothes in hot soap solution. Why?

    Text Solution

    |

  10. If a capillary tube is put in water in a weightlessness state, how wil...

    Text Solution

    |

  11. What is the reason that a constant driving force is always required fo...

    Text Solution

    |

  12. Water flows faster than honey. Why?

    Text Solution

    |

  13. From where viscous force come about in moving liquids. Discuss the fac...

    Text Solution

    |

  14. Machine parts are jammed in winter. Why?

    Text Solution

    |

  15. Why oils of different viscosity are used in different seasons?

    Text Solution

    |

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

    Text Solution

    |

  17. Explain viscosity. Give some examples. Where is its part being played...

    Text Solution

    |

  18. The sides of a horizontal pipe carrying dirty water get dirty. Explain...

    Text Solution

    |

  19. Two capillary tubes of equal length and inner radii 2r and 4r respecti...

    Text Solution

    |

  20. what is the origin of viscous drag on a body falling through a fluid?

    Text Solution

    |