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Indicate the most viscous liquid of the following
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The limiting radii ratio for the tetrahedral geometry is
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All gases tend to show ideal behaviour
A. at low temperature and low pressure
B. at high temperature and high pressure
C. at high temperature and low pressure
D. at low temperature and high pressure
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The number of molecules of present in 44 gms. of is
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Chloroform and benzene form a pair of miscible liquids. These can be separated by
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6.If the reactants and products both are in gaseous phase they bear a simple ratio in their
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Cubic close packed arrangement of ions is described as
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The critical temperature of a substance is defined as
A. the temperature above which the substance decomposes
B. the temperature above which the substance can exist only as a gas
C. melting point of the substance
D. boiling point of the substanc
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In the wurtzite structure sulphur atoms have
B. hexagonal dose packed arrangement
C. body centred arrangement
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Density of a gas relative to air is 2.3. If the average molar mass of air is 29.08/mol, the molecular mass of the gas will be
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The weight of 22.4 litres of any gas at N.T.P. represent its
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Which compound possesses greatest lattice energy?
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The radii of and are 95 pm and 181 pm respectively. Coordination number of is expected to be
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What is the vapour pressure of benzoyl chloride at its boiling point (197°C)?
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The weight of 11.2 litres of at S.T.P. would be
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In NaCl type structure, the coordination number of the cation and anion are
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To which of the following mixtures is the Dalton's law of partial pressures not applicable?
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Kinetic gas equation is, PV =...
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The number of N2 molecules present in 28 nitrogen is
C. 6 x approximately
D. 5 x approximately
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The vapour density of a gas in 35.5. The volume occupies by 3.55 gms of the gas at N.T.P. is
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The ionic radii of and ions are 1.47 and 1.95 , respectively. The most probable type of geometry exhibited by RbBr on the radius ratio rule is
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Volume occupied by 1 gm equivalent of oxygen at NTP is
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Which of the following methods is used to determine the atomic weight?
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The electrical conductivity of metals is of the order of
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In a solid atoms A are arranged in ccp array. Atoms B occupy all the octahedral voids and half the tetrahedral voids. The formula of the compound is expected to be
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In the process of sublimation, the substance transforms directly
A. from the solid state to the liquid state
B. from the liquid state to gaseous state
C. from the solid state to gaseous state
D. from the liquid state to solid state
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In a close packed arrangement of N spheres, the number of octahedral holes are
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Volume occupied by 4.4 gift of carbon dioxide is
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Which of the following is an amorphous solid?
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The vapour density of pure ozone would be