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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
  • In the metallurgy of which of the following, cupellation process is used:
    Fe
    Al
    Ag
    Cu
  • Chile salt peter is :
    KNO3
    NaNO3
    Na2S2O3
    Na2SO4
  • Object of smelting of ore is :
    Oxidation
    Reduction
    To obtain alloy
    Removal of volatile residue
  • which one of the following sulphides is only completely precipitated when the acidic solution is mad
    CdS
    PbS
    CuS
    HgS
  • Which of the following is not an ore of Mg metal:
    Magnesite
    Carnalite
    dolomite
    zypsum
  • Casseterite is an ore of:
    lead
    zinc
    copper
    tin
  • important ore of copper is :
    casseterite
    cryolyte
    chalcopyrite
    calamine
  • Malachite is an ore of
    copper
    iron
    magnesium
    zinc
  • Chemical formula of corundum is :
    CaF2
    SiO2
    Sic
    Al2O3
  • Calamine is:
    PbCO3
    ZnCO3
    MgCO3
    CaCO3