Home
Class 11
CHEMISTRY
Explain why: Al utensils should not...

Explain why:
Al utensils should not be kept in water over night.

Promotional Banner

Topper's Solved these Questions

  • SAMPLE QUESTION PAPER -IV (PUNJAB)

    OMEGA PUBLICATION|Exercise QUESTION|45 Videos

  • SOME BASIC CONCEPTS OF CHEMISTRY

    OMEGA PUBLICATION|Exercise Multiple Choice Questions (MCQs)|29 Videos

Similar Questions

Explore conceptually related problems

Explain why lower ethers are highly soluble in water ?

Explain why lower ethers are highly soluble in water?

Explain why Al wire is used to make transmission cables.

Explain why the resistance of ammeter is kept low.

Explain: Why should contraceptives be used ?

Explain, why a cloudy night is more warmer than a clear night is more warmer than a clear night.

Explain why Grignard reagents should be prepared under anhydrous conditions.

Explain why ice floats over water.

OMEGA PUBLICATION-SAMPLE QUESTION PAPER -v (PUNJAB)-QUESTION
  1. Calculate mass of 10^20 atoms of oxygen.

    Text Solution

    |

  2. What is diborane ? Give its structure.

    Text Solution

    |

  3. Explain why: Al utensils should not be kept in water over night.

    Text Solution

    |

  4. Explain why Al wire is used to make transmission cables.

    Text Solution

    |

  5. Distinguish between classical and photochemical smogs.

    Text Solution

    |

  6. Define disproportionisation and simple displacement redox reactions.

    Text Solution

    |

  7. Which out of NH(3) and NF(3) have higher dipole moment and why?

    Text Solution

    |

  8. C Cl4 is not hydrolysed but SiCl4 can be hydrolysed with water. Why ?

    Text Solution

    |

  9. Derive van der Waals’ equation of State for n moles of gas.'

    Text Solution

    |

  10. Calculate the kinetic energy of 0.2 g of H2 at 27^@C.

    Text Solution

    |

  11. Calculate enthalpy of the reaction : 4NH3(g) +3O2(g) rarr 2N2(g)+ 6H2O...

    Text Solution

    |

  12. State and explain Le chatelier's Principle. What are its applications.

    Text Solution

    |

  13. BF3 acts as a Lewis acid. Why ?

    Text Solution

    |

  14. Can you prepare a solution having pH more than 14 ?

    Text Solution

    |

  15. Write IUPAC name of the following compounds C(6)H(5)-CH = CH-CH(2)C...

    Text Solution

    |

  16. Write IUPAC name of the following compounds CH(3)-CH = CH-C = CH

    Text Solution

    |

  17. Out of the following plants which are known as herbs- Mango tree, Basi...

    Text Solution

    |

  18. Why tirtary carbocations are more stable than, secondary and primary c...

    Text Solution

    |

  19. Give the chemistry of Solvay process for the manufacture of Na(2)CO(3)...

    Text Solution

    |

  20. Group 2 elements are denser and harder than group 1 elements. Why ?

    Text Solution

    |