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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
  • Rate of diffusion of CH4 is double than a gas X. Molecular mass of X is
    8
    16
    32
    64
  • Ratio of rate of duffusion of O2 and H2 is :
    1:1
    1:4
    1:2
    2:1
  • Compressibility factor of an ideal gas is :
    1.5
    1
    2.5
    None of the above
  • The cause of fast cooking of food in a pressure cooker is :
    Boiling point decreases on increasing pressure
    Boiling point increases on increasing pressure
    There is no loss of internal energy in the pressure cooker
    Excess pressure softens the food
  • The value of gas constant R is:
    0.082 lt atm/k-mol
    8.3 Jmol/k
    83 erg /mol- k
    0.987 cal /mol-k
  • The kinetic theory of gases proves:
    Avogadros law
    Charles law
    Boyles law
    All the above
  • The number of moles per litre in an ideal gas in terms of pressure P, gas constant R and temperature
    PRT
    RT/P
    P/RT
    PT/R
  • According to kinetic theory of gases, the motion of a gas molecule in tow consecutive collision is :
    rectangular
    wave like
    incerasing
    in a straight line
  • Purine base in RNA is :
    Uracil
    Thymin
    Guanine
    Cytrocin
  • How many types of three dimensional lattice are possible in solid crystals:
    7
    14
    23
    230