Related Questions
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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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Which of the following phrases would be incorrect to use?
C. A molecule of a compound
D. A molecule of an element
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4
The number of molecules of present in 44 gms. of is
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Cubic close packed arrangement of ions is described as
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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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The V.D. of a gas is 11.2 gm. The volume occupied by 11.2 gm. of this gas at N.T.P. is
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If the tetrahedral sites in ccp arrangement of negative ions (Y) were half filled with cation (X), the empirical formula of the compound would be
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4
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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Four 1 litre flasks are separately filled with the gases hydrogen, helium, oxygen and ozone at the same temperature and pressure, the ratio of total number of atoms of these gases present in the different flasks would be
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Correct gas equation is
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An element has atomic weight 24 and equivalent weight 11.9. Its valency is
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Equal weights of methane and hydrogen are mixed in an empty container at 25°C. The fraction of the total pressure exerted by methane is
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Which of the following statement wrong?
A. In solid state molecules, atoms or ions are held with a strong force of attraction and are in a fixed position
B. In liquid state the molecules, atom or ions are held with a strong force and have a restricted motion
C. In gaseous states, the molecules are randomly arranged and are apart from each other
D. Solid, liquid and gaseous states have different movement is particles
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What will be the mass of 6.03 x molecules of carbon monoxide ?
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Which of the following contains the same number of atoms as 12 gms: of Magnesium (Atomic weights : Mg = 24, C = 12, Ca = 40)
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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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When there is more deviation in the behaviour of a gas from ideal gas equation PV = nRT
A. at high temperature and low pressure
B. at low temperature and high pressure
C. at high temperature and high pressure
D. at low temperature and low pressure
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4
In NaCl type structure, the coordination number of the cation and anion are
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In a unit cell of cesium chloride the arrangement of cesium ions is
B. hexagonal close packed
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Four 1 litre flasks are separately filled with hydrogen, helium, oxygen and ozone gases at the same temperature and pressure. The ratio of total number of atoms of these gases present in the different flasks would be
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Molecular formula of D in the above case is
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In a face centred cubic arrangement of ions, the coordination number of ions is
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The ratio of RMS velocity to average velocity of a gas molecule at a particular temperature is
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Which of the following is an example of covalent network solid?
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The vapour density of pure ozone would be
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Sodium chloride has fee structure. How many and ions are there in the unit cell?.
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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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How many moles of water are present in 180 gm. of water ?
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22.4 litres of at 27.3°C and 1 atmosphere pressure shall weigh
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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