Home
Class 11
CHEMISTRY
Why do lakes freeze from water top towar...

Why do lakes freeze from water top towards bottom?

Promotional Banner

Topper's Solved these Questions

  • HYDROGEN

    MODERN PUBLICATION|Exercise REVISION EXERCISES (Short Answer Questions)|53 Videos

  • HYDROGEN

    MODERN PUBLICATION|Exercise REVISION EXERCISES (Long Answer Questions)|10 Videos

  • HYDROGEN

    MODERN PUBLICATION|Exercise REVISION EXERCISES (Assertion Reason Questions)|10 Videos

  • HYDROCARBONS

    MODERN PUBLICATION|Exercise UNIT PRACTICE TEST|15 Videos

  • MOCK TEST -1

    MODERN PUBLICATION|Exercise SECTION -D|2 Videos

Similar Questions

Explore conceptually related problems

Why do lakes freeze form water top towards bottom?

Explain : (i) Why water has higher boiling melting points as compared to H_2 S ? (ii) Why do lakes freeze from top towards bottom ?

Given reasons (i) Lakes freeze form top towards bottom. (ii) Ice floats on water.

Water fall from height 63m. Find temperature difference of water between top and bottom position.

Transpiration cohesion theory explains that the upwards pull of water is transmitted from top to bottom by cohesion of molecules caused by

The surface of water in a lake is first going to freeze. Now the temperature of water at the bottom is ____________

Even when a lake freezes in winters, how do the animals survive deep inside the lake.

MODERN PUBLICATION-HYDROGEN-REVISION EXERCISES (Very Short Answer Questions)
  1. Name two metals which can displace hydrogen from acids.

    Text Solution

    |

  2. Which isotope of hydrogen is radioactive in nature?

    Text Solution

    |

  3. a. What does [H(9)O(4)]^(o+) stand for ? Draw its structures. b. Can...

    Text Solution

    |

  4. What is meant by autoprotolysis of water ?

    Text Solution

    |

  5. Which of the following is the most reactive towards ring nitration ?

    Text Solution

    |

  6. How does O(3) react with lead sulphide ? Write chemical equation.

    Text Solution

    |

  7. Bleaching action of H(2)O(2) is due to its :

    Text Solution

    |

  8. What happens when phosphoric acid is heated ?

    Text Solution

    |

  9. Give an example of (i) ionic hydride, (ii) covalent hydride.

    Text Solution

    |

  10. Calcium carbide reacts with water to produce

    Text Solution

    |

  11. Complete the following reactions: (i) XeF2 + H2 to , (ii) XeF6 + Si...

    Text Solution

    |

  12. Complete the following reactions: (i) XeF2 + H2 to , (ii) XeF6 + Si...

    Text Solution

    |

  13. Complete the following reactions: (i) CaO(s)+H(2)O(l)to Na(2)O(s)...

    Text Solution

    |

  14. Why do lakes freeze from water top towards bottom?

    Text Solution

    |

  15. Explain why water has high boling and melting points are compared to H...

    Text Solution

    |

  16. Write chemical reactions to show the amphoteric nature of water.

    Text Solution

    |

  17. What is meant by dispersion of light ?

    Text Solution

    |

  18. How is temporary hardness in water removed?

    Text Solution

    |

  19. Which of the following ions will cause hardness in water sample?

    Text Solution

    |

  20. Which of the following ions will cause hardness in water sample?

    Text Solution

    |