Home / General Knowledge / Chemistry :: section-15

General Knowledge :: Chemistry

  1. The nuclear particle having no mass and no charge, but only spin is

  2. A.

     Proton

    B.

     Neutrino

    C.

     Meson

    D.

     Electron

    View Answer

    Workspace

    Discuss Discuss in Forum


  3. The orientation of an atomic orbital is governed by

  4. A.

     Principal quantum number

    B.

     Magnetic quantum number

    C.

     Spin quantum number

    D.

     Azimuthal quantum number

    View Answer

    Workspace

    Discuss Discuss in Forum


  5. 'Atomic theory' of matter was given by

  6. A.

     Avogadro

    B.

     Dalton

    C.

     Newton

    D.

     Pascal

    View Answer

    Workspace

    Discuss Discuss in Forum


  7. The most suitable unit for expressing nuclear radius is :

  8. A.

     Nanometre

    B.

     Fermi

    C.

     Angstrom

    D.

     Micron

    View Answer

    Workspace

    Discuss Discuss in Forum


  9. The total energy of revolving electron in an atom

  10. A.

     Cannot be negative

    B.

     Can have any value above zero

    C.

     Can never be positive

    D.

     Will always be positive

    View Answer

    Workspace

    Discuss Discuss in Forum


  11. Which one of the following elements is least likely to be found in commercial fertilisers?

  12. A.

     Nitrogen

    B.

     Phosphorous

    C.

     Potassium

    D.

     Silicon

    View Answer

    Workspace

    Discuss Discuss in Forum


  13. Which of the following is caused by the higher concentration of Nitrogen and Phosphorous ?

  14. A.

     Eutrophication

    B.

     Hardness

    C.

     Alkalinity

    D.

     Acidity

    View Answer

    Workspace

    Discuss Discuss in Forum


  15. If the sewage is fully oxidized, the nitrogen is in the form of

  16. A.

     Nitrites

    B.

     Ammonia

    C.

     Nitramines

    D.

     Nitrates

    View Answer

    Workspace

    Discuss Discuss in Forum


  17. If all bullets could not be removed from gun shot injury of a man, it may cause poisoning by

  18. A.

     Mercury

    B.

     Lead

    C.

     Iron

    D.

     Arsenic

    View Answer

    Workspace

    Discuss Discuss in Forum


  19. Extensively used nitrogenous fertilizer is

  20. A.

     Ammonium nitrate

    B.

     Urea

    C.

     Ammonium sulphate

    D.

     Nitro-lime

    View Answer

    Workspace

    Discuss Discuss in Forum