Home
Class 11
CHEMISTRY
State reason:The melting point of Boron ...

State reason:The melting point of Boron is top high.What is Corundum? State one use of it.

Promotional Banner

Topper's Solved these Questions

  • MODEL QUESTION PAPER 1

    UNITED BOOK HOUSE|Exercise EXERCISE|63 Videos
  • MODEL QUESTION PAPER 11

    UNITED BOOK HOUSE|Exercise EXERCISE|54 Videos

Similar Questions

Explore conceptually related problems

State one use of CO

State one use of PVC.

What is Nitrolim? State one use of it.

What is dialysis? State one use of it.

What si buna-N-Rubber? State one use of it.

State two uses of zinc.

Why the melting point of Boron is so high? State one use of Boron Carbide.

State one use of acetylene.

What is magnalium? State its uses.

What is the melting point of mercury?

UNITED BOOK HOUSE-MODEL QUESTION PAPER 10-EXERCISE
  1. Which one has the highest paramanetic property and which one has least...

    Text Solution

    |

  2. Find the position of the element having atomic number 24. In which blo...

    Text Solution

    |

  3. What do you mean by Stair step diagonal? State its significance.

    Text Solution

    |

  4. If the dipole moment and bond length of HF be 2.0 D and o.C.2A^@then f...

    Text Solution

    |

  5. Explain why the viscosity and boiling point of H2SO4 is too high.Write...

    Text Solution

    |

  6. What do you mean by surface tension? What is PI? How it is related wit...

    Text Solution

    |

  7. What do you mean by enthalpy? Show that DeltaH= DeltaU + Delta nRT.

    Text Solution

    |

  8. Define free energy. Comment for its change in a sponttaneous reaction.

    Text Solution

    |

  9. Identify ABCD:A overset(Na) underset(LiqNH3)(rarr)B overset (CH3I)(rar...

    Text Solution

    |

  10. If 4ml O2is obtained at 1.5atm pressure and 25^@C from 1 ml H2O2 sol...

    Text Solution

    |

  11. How would you differch mically Na2CO3 & NaHCO3 which alkali metal form...

    Text Solution

    |

  12. State the conditions of SN^2 reaction? What is I-effect?

    Text Solution

    |

  13. What type of equilibrium 'is this 3Fe (s) + (g) f Fe3O4 (S) 4H2 (g)Di...

    Text Solution

    |

  14. Shall phenolpthalein be used in neutralisation of Na2 CO3 by HC1? Why ...

    Text Solution

    |

  15. Why CO Can't be dried using comes H2SO4? Give an example of a reaction...

    Text Solution

    |

  16. State reason:Why the radius of Ga is less than that of Al.

    Text Solution

    |

  17. State reason:The melting point of Boron is top high.What is Corundum? ...

    Text Solution

    |

  18. How would you differ Chemically between ethane and ethene. What will h...

    Text Solution

    |

  19. How would you Convert. State one demerits Fredel craft alkylation reac...

    Text Solution

    |

  20. How would you Convert. State one demerits Fredel craft alkylation reac...

    Text Solution

    |