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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
  • Important ore of magnesium is :
    malachite
    kaesiterite
    carnalite
    galena
  • Compounds of which element are mainly covalent :
    Ba
    Sr
    Ca
    Be
  • Solubility of which sulphate is the least :
    BaSO4
    MgSO4
    SrSO4
    CaSO4
  • Which magnetic property is present in alkaline earth metals:
    diamagnetic
    paramagnetic
    ferro magnetic
    anti magnetic
  • Hydration energy of Mg2+ ion will be more than :
    Al3+
    Na+
    Be2+
    Mg2+
  • Active constituent of Bleaching powder :
    CaOCl2
    Ca(OCl)Cl
    Ca(O2Cl2)
    CaCl2O2
  • Lowest melting point compound :
    LiCl
    NaCl
    KCl
    RbCl
  • Which of the following gives green colour to fireworks :
    Na
    Co
    Ba
    Cd
  • Which is the smallest cation among the following:
    Na+
    Mg++
    Ca++
    Al+++
  • The formula of Gypsum is :
    CaSO4,H2O
    (CaSO4)2.H2O
    CaSO4.2H2O
    2CaSO4.H2O