Home
Class 11
PHYSICS
It is better to wash the clothes in hot ...

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

Text Solution

Verified by Experts

The soap solution has less surface tension as compared to ordinary water and its surface tension decreses further on heating. The hot soap solution can, therefore, spread over large surface area and as such it has more wetting power. It is on ac count of this property that hot soap solution can penetrate the pores in the threads of cloth where dust may be present and can clean the cloths better than the ordinary water.
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

Statement-1: It is better to wash the clothes in cold soap solution. Statement-2: The surface tension of cold solution is more than the surface tension of hot solution:

A : It is better to wash cloths in hot water than cold water. R : On increasing temperature surface tension of water decreases.

It is easy to wash clothes in hot water because its :-

The soda used for washing the clothes is

When soap solution dissolves in water , then the surface tension of soap solution is

Why is it better to wear dark clothes in winter ?

PRADEEP-PROPERTIES OF BULK MATTER-Conceptual Problems
  1. Why does an iron needle float on clean water but sink when some deterg...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  6. Water flows faster than honey. Why?

    Text Solution

    |

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

    Text Solution

    |

  8. Machine parts are jammed in winter. Why?

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  15. Are there some conditions for stoke's law to be obeyed. If no, explain...

    Text Solution

    |

  16. What is terminal velocity? Discuss the factors on which it depends.

    Text Solution

    |

  17. Rain drops falling under gravity do not acquire very high velocity. Wh...

    Text Solution

    |

  18. Under what conditions, the velocity of a body falling in a medium (i) ...

    Text Solution

    |

  19. What are the qualities of an ideal liquid?

    Text Solution

    |

  20. Why dies velocity increase when water flowing in broader pipe enters a...

    Text Solution

    |