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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 of the following regions of atmosphere contains ozone :
    Troposphere
    Mesosphere
    Stratosphere
    Thermosphere
  • The basic component of smog is
    PAN
    PBN
    NO2
    All the above
  • Pesticides include :
    Herbicides
    Insecticides
    Fungicides
    All the above
  • BOD refers to :
    Biochemical Oxygen Decay
    Biochemical Oxygen Demand
    Biochemical Oxygen Deficiency
    Biological Oxygen Demand
  • The largest producer of CO2 is :
    India
    USSR
    USA
    UK
  • The most dangerous metal pollutant of the automobile exhaust is :
    Mercury
    Lead
    Arsenic
    Cadmium
  • Global warming is related to :
    Classical smog
    Greenhouse effect
    Ozone layer depletion
    Photo chemical smog
  • The major source of CO is :
    Plants and animals
    Metallurgical operations
    Artificial Fertilizers
    Incomplets combustion of fosil fuels
  • What % of earth surface is covered by water :
    65 %
    75%
    79%
    71%
  • Sewage water is purified by :
    Fishes
    Ozone
    Micro organisms
    Chlorine