Back to subject

Topic

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
  • Brass contains:
    Silver and zinc
    Copper and Zinc
    Copper and aluminium
    Gold and Copper
  • what is the product obtained when MnSO4 in solution is boiled with PbO2 and co
    Mn3O4
    MnO2
    PbMnO4
    HMnO4
  • Transition metals are generally paramagnetic because:
    they have high m.p.and b.p.
    they are malleable and ductile
    they have incomplete orbitals
    they have unpaired electrons
  • Zinc is not a transition element because:
    it acts as a catalyst
    it does not form complexes
    it is white in color
    it does not contain incomplete d orbitals
  • which among the following ion has least magnetic moment:
    Ni++
    Co+++
    Fe++
    Cu++
  • Transuranium elements are those which:
    lighter then uranium
    Have lesser atomic no than uranium
    are heavier than uranium
    have same at. no as uranium
  • Which forms most covalent oxide:
    Cr
    Mn
    Fe
    V
  • Element with 3d5,4s1 outer electronic configuration is:
    Transition metal
    alkali metal
    Noble gases
    non metal
  • Intra-atomic force is least in the following metal:
    Zn
    Cu
    Hg
    Ag
  • no of unpaired electrons in Ni++ are:
    1
    2
    4
    6