Back to subject

Topic

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
  • A colloid formed by the dispersion of a liquid into a solid is :
    Emulsion
    Foam
    Gel
    Sol
  • Acetic acid adsorbed on activated charcoal is :
    Adsorbent
    Absorbate
    Absorbent
    Adsorbate
  • Adsorption of air on solid on decreasing temperature and increaseing pressure :
    Increases
    Decreases
    First increases then decreases
    First decreases then increases
  • The rapid zig-zag motion of colloidal particles was studied by :
    Tyndall
    Robert Brown
    Graham
    None of the above
  • Butter is :
    An emulsion
    A sol
    A gel
    Not a form of colloid
  • Which among the following is a lyophilic colloid:
    Sulphur
    Gold
    Carbon
    Gelatin
  • The cause of the stability of lyophilic colloids is :
    Large size of their particles
    Small size of particles
    A layer of dispersion medium on their particles
    None of the above
  • The ability of an ion to coagulate a collide depends upon:
    Type of charge
    Its size
    On the amount and type of charge
    The amount of charge present on it
  • KClO3 decomposes into KCl and O2, when MnO2 is added then the react
    MnO2 provide a better contact
    MnO2 decomposes to give 2
    MnO2 reacts to give heat
    MnO2 acts as a catalyst
  • Milk is a colloid in which:
    Liquid is dispersed in liquid
    Gas is dispersed in liquid
    suger is dispersed in liquid
    solid is dispersed in liquid