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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
  • The most widely used Freon is:
    Freon - 11
    Freon -112
    Freon - 123
    Freon - 12
  • Drinking water is purified using :
    Cl2
    O3
    Both
    SO3
  • Green chemistry means such reactions which:
    Are related to the depletion of ozone layer
    Produce color during reactions
    reduce the use and production of hazardous chemicals
    study the reactions in plants
  • Which one of the following compounds helps in achieving equilibrium between O2 and CO
    Acetyl salicylic acid
    Sun rays
    Porphyrin
    Chlorophyll
  • Surface water contains:
    Salts + organic matters
    Organic matters
    Suspended inmpurities
    Salts only
  • The acid which has the largest concentration in acid rain is :
    HNO3
    H2SO4
    H2SO3
    HOCl
  • The extend of photo chemical smog can be suppressed by :
    Formaldehyde
    Nitrogen oxides
    Radical traps
    Hydrocarbons
  • Photo chemical pollutants PAN and PBN are produced from:
    Acid chloride
    Alcohol
    Aldehyde
    Carboxylic acid
  • Electrically charged zone is found in :
    Thermosphere
    Mesosphere
    Troposphere
    Stratosphere
  • An Example of major air pollutant is :
    CO
    CO2
    He
    O2