Kinetic theory of gases stipulates that, the
A. Energy is lost during molecular collisions
B. Molecules possess appreciable volume
C. Absolute temperature is a measure of the kinetic energy of molecules
D. None of these
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At what temperature, given mass of a gas that occupies a volume of 2 litres at N.T.P. will occupy a volume of 4 litres, if the pressure of the gas is kept constant?
A. 273°C
B. 273°K
C. 100°C
D. 200°C
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40 gms each of the methane and oxygen are mixed in an empty container maintained at 40°C. The fraction of the total pressure exerted by oxygen is
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The vapor pressure of water at 100°C is
A. 100 N/m2
B. 76 cms of Hg
C. 13.6 cms of Hg
D. 760 mm wc
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A bypass stream in a chemical process is useful, because it
A. Facilitates better control of the process
B. Improves the conversion
C. Increases the yield of products
D. None of these
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Which of the following ratios defines the recycle ratio in a chemical process?
A. Gross feed stream/recycle feed stream
B. Recycle stream/fresh feed stream
C. Recycle stream/gross feed stream
D. None of these
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Heat of reaction is a function of the
A. Pressure
B. Temperature
C. Both(a)&(b)
D. Neither (a) nor (b)
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Heat of reaction is not influenced by
A. The route/method through which final products are obtained
B. The physical state (e.g., solid, liquid or gaseous) of reactants and products
C. Whether the reaction is carried out at constant temperature or constant pressure
D. None of these
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Unrestrained expansion of an ideal gas does not result in its cooling due to the reason that the gas molecules
A. Do not lose energy on collision
B. Are above the inversion temperature
C. Do not exert attractive force on each other
D. Do work equal to loss in kinetic energy
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Which of the following gases will have the- highest kinetic energy per mole at the same pressure & temperature?
A. Chlorine
B. Nitrogen
C. Ethane
D. All of the above
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The OH- concentration in a solution having pH value 3 is
A. 10-3
B. 10-10
C. 10-11
D. 10-13
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The viscosity of water at room temperature may be around one
A. Centipoise
B. Poise
C. Stoke
D. Both B & C
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A vapor that exists above its critical temperature is termed as a __________ vapor.
A. Saturated
B. Unsaturated
C. Gaseous
D. Sub-cooled
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A gas at 0°C was subjected to constant pressure cooling until its volume became half the original volume. The temperature of the gas at this stage will be
A. 0°C
B. 0°K
C. -136.5°C
D. -136.5°K
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A gas at 0°C is cooled at constant pressure until its volume becomes half the original volume. The temperature of the gas at this state will be
A. -136.5°C
B. - 136.5°K
C. -273°C
D. 0°K
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Which of the following is not a unit of kinematic viscosity?
A. Poise
B. Stoke
C. Cm2 /second
D. None of these
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The density of a gas 'X' is twice that of another gas 'Y'. If the molecular weight of gas 'Y' is 'M'; then the molecular weight of the gas 'X' will be
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Pick out the wrong statement.
A. Heat capacity of a diatomic gas is higher than that of a monoatomic gas
B. Equal volumes of Argon and Krypton contain equal number of atoms
C. Total number of molecules contained in 22.4 litres of hydrogen at NTP is 6.023 x 1023
D. The binary mixture of a particular com-positidn in both vapor and liquid state is known as an azeotropic mixture
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Ideal solution is formed, when its components have zero
A. Heat of mixing
B. Volume change
C. Both A & B
D. Neither A nor B
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The heat evolved in the combustion of benzene is represented by the equation:
C6 H6 + 7.5O2 = 6CO2 + 3H2 O, ΔH = 3264.6 kJ/kg.mole
The heat energy change, when 39 gm of C6 H6 is burnt in an open container, will be __________ kJ/kg.mole.
A. +816.15
B. +1632.3
C. -1632.3
D. -2448.45
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