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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
  • Which one oxidises water into oxygen :
    Br2
    I2
    F2
    Cl2
  • Strongest hydrogen bond is
    F-H.....O
    F-H......F
    O-H.....S
    S-H.....O
  • Which non-metal is most reactive:
    O2
    N2
    F2
    S
  • Fluorine forms with hot and conc. NaOH:
    H2
    O2
    Na2O
    Na
  • Which fluoride does not exist:
    NF5
    PF5
    AsF5
    SbF5
  • Halogen that shows only one oxidation state in its compounds:
    Fluorine
    Chlorine
    Bromine
    Iodine
  • Sea weed is main source of :
    Chlorine
    Bromine
    Iron
    Iodine
  • Most elctronegative element is :
    Na
    H
    F
    Ne
  • Hydrogen with respect to chlorine is :
    Electronegativity
    Electropositive
    Neutral
    None of the above
  • Most acidic halide is :
    BCl3
    CCl4
    SbCl5
    PCl3