Unit of power is
A. Joule
B. Watt
C. Joule/Second
D. Both B & C
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For water evaporating into usaturated air under adiabatic conditions and at constant pressure, the __________ remains constant throughout the period of vaporisation.
A. Dry bulb temperature
B. Wet bulb temperature
C. Humidity
D. Relative saturation
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Molality is defined as the number of gm moles of solute per __________ of solvent.
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For a neutral solution (pH = 7), the value of [H+ ] [OH- ] is equal to
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Vapor pressure of a solution is proportional to (where, Sv and St are mole fraction of solvent and solute respectively).
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Pick out the wrong unit conversion of heat transfer rate.
A. 1 kcal/hr = 1.163 Watt
B. 1 Watt = 1.163 kcal/hr
C. 1 BTU/ft2 .hr = 2.712 kcal/m2 .hr
D. 1 kcal/m2 .hr = 0.3687 BTU/ft2 .hr = 1.163 Watt/m2
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A fluid gas produced on burning furnace oil contains 0.15 gm mole of CO2 , 0.05 gm mole of oxygen and 0.80 gm mole of N2 . What is its molecular weight?
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Colligative properties of a dilute solution are those, which depend entirely upon the
A. Chemical composition of the solute
B. Constitution of the solute
C. Number of solute molecules contained in a given volume of the solvent
D. None of these
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Colligative properties of a dilute solution are those which depend entirely upon the
A. Constitution of the solute
B. Chemical composition of the solute
C. Number of solute molecules contained in a given volume of the solvent
D. None of these
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Osmotic pressure exerted by a solution prepared by dissolving one gram mole of a solute in 22.4 litres of a solvent at 0°C will be __________ atmosphere.
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Heat of neutralisation of HCl and NaOH is - 57.46 kJ/Kg mole. The heat of ionisation of water will be __________ kJ/Kg mole.
A. 57.46
B. -57.46
C. 114.92
D. -28.73
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The increase in the temperature of the aqueous solution will result in decrease of its
A. Weight % of the solute
B. Mole fraction of the solute
C. Molarity
D. Molality
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Which of the following is not a unit of length?
A. Parsec
B. Angstrom
C. Barn
D. Fermi
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1 BTU/ft3 is approximately equal to __________ kcal/m3 .
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1 gm mole of an alcohol whose molecular weight is 74 contains 48 gms of carbon, 10 gms of hydrogen and 16 gms of oxygen. Its molecular formula is
A. C4 H9 OH
B. C3 H21 OH
C. (C2 H4 )2 H2 .OH
D. C2 H33 OH
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The value of (Cp - Cv ) for a real gas obeying Vander Wall's equation is
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For an endothermic reaction, the minimum value of energy of activation will be (where, ΔH = enthalpy of the reaction)
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