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Chemistry in daily life Bio molecules Polymers Environmental chemistry Nitrogenous compound Aldehyde and ketone Alcohol and phenol Halo alkane Hydrocarbon Basic concept of organic chemistry Coordination chemistry d&f block element p-block element part 3 p – block element part 2 p-block element part 1 s-block element Hydrogen Principal of extraction of metal Surface chemistry Chemical kinetics Electro chemistry Solution Chemical equilibrium Thermodynamics State of matter Chemical bonding Classification of element Atomic structure Basic concept of chemistry
  • The transition elements mostly are:
    Paramagnetic
    Diamagnetic
    Neither diamagnetic nor paramagnetic
    Both
  • A compound of zinc which is white in cold state and yellow in hot state, is :
    ZnO
    ZnS
    ZnCl2
    ZnSO4
  • The maximum known oxidation state of Cr is :
    +6
    +7
    +8
    +5
  • in refining by electrolytic process impure metal is :
    Anode
    Cathode
    Both
    None of the above
  • In 3d transition series, with the increase in nuclear charge the shielding effect :
    decreases
    increases
    remains constant
    First decreases then increases
  • Most of the d-block elements are :
    All are non metals
    Monovalent metals
    Mainly the elements that form stoichiometric elements
    metals containing catalytic properties
  • Which of the following transition metals show highest oxidation states:
    Sc
    Zn
    V
    Mn
  • variable valency is shown by :
    non metals
    metals
    normal elements
    transition elements
  • The maximum oxidation states of transition metals are obtained by the following:
    (n-1) d electrons
    (n+1) d electrons
    ns+(n-1)d electrons
    ns electrons
  • which among the following is a transition element:
    Al
    Rb
    As
    Ni