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Which of the following would you expect to affect the vapour pressure of a liquid?
A. Inter-molecular forces in the liquid
B. Volume of the liquid in the liquid-vapour equilibrium
C. Volume of the vapour in the liquid-vapour equilibrium
D. The size of the container in which liquid-vapour equilibrium is establishe
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Kinetic gas equation is, PV =...
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The Van der Waal's equation explains the behaviour of
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In NaCl type structure, the coordination number of the cation and anion are
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Which of the following is an example of covalent network solid?
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In zinc blende structure, the zinc atoms occupy
C. half of the octahedral sites
D. half of the tetrahedral sites
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The average kinetic energy of the molecule of (moL wt. = 64) at 27°C is E. Then the average kinetic energy of at 27°C is
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Of the following properties, the magnitude of one must always increase with temperature. The property is
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The vapour density of a gas is 11.2. The volume occupied by 2.4 g of the gas at S.T.P wil be
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The ionic radii of and are 0.66 and 1.40 , respectively. The most probable type of gteometry exhibited by MgO on the basis of radius ratio rule is
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Lattice energy of a solid is high if
A. the radii of the ions are large
B. radii of the ions are small
C. charge on the ions are small
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In which one of the following does diffusion occur most rapidly?
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In a closed packed structure the pattern ABAB...... represents which one of the following:
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22.4 litre of any gas at N.T.P. will contain
B. One gram atomic weight
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Normal boiling points values are for , - 34C, bromine 58°C, carbon tetrachloride 77°C and oxygen - 183°C. Which of these liquids has the highest vapour pressure at room temperature?
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The number of atoms in 0.004 gm of magnesium is close to
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A closed vessel contains equal number of molecules of a total pressure at 740 mm. If oxygen is removed from the system the pressure will
D. become double of 740 mm
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In the gas equation PV = xT, x is a constant. The value of the constant depends upon
C. type values of T and P
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Cubic close packed arrangement of ions is described as
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Sodium chloride has fee structure. How many and ions are there in the unit cell?.
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Indicate the most volatile liquid of the following:
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The vol. of 20 gms of nitrogen at N.T.P.
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To which of the following mixtures is the Dalton's law of partial pressures not applicable?
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In a dose packed arrangement of N spheres, the number of tetrahedral holes are
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Chloroform and benzene form a pair of miscible liquids. These can be separated by
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The number of molecules in 32 gms of oxygen in
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If all the octahedral sites in a cubic close packed arrangement () are completelyfilled with cations, the empirical formula of the compound could then be
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At 303 K ethanol has a vapour pressure of about 0.118 atm., acetic acid has the vapour pressure of about 0.039 atm., and ethyl iodide has a vapour pressure of about 0.263 atm. Which of the following represents the correct order of increasing normal boiling point ?
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A chalk box exhibits
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An element has atomic weight 24 and equivalent weight 11.9. Its valency is