MCQs: During a phase change process like sublimation, vaporisation, melting etc., the specific ____________ does not change?
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MCQs: The maximum adiabatic flame temperature of fuels in air is ____________ the maximum flame temperature in pure oxygen?
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MCQs: A vessel of volume 1000 m3 contains air which is saturated with water vapour. The total pressure and temperature are 100 kPa and 20°C respectively. Assuming that the vapour pressure of water at 20°C is 2.34 kPa, the amount of water vapour (in kg) in the vessel is approximately ?
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MCQs: Kinematic viscosity of 1 m2 /second is equivalent to _____________ stokes?
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MCQs: For water evaporating into unsaturated air under adiabatic conditions and at constant pressure, the ____________ remains constant throughout the period of vaporisation ?
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MCQs: At higher temperature, molal heat capacities of most of the gases (at constant pressure) ____________ with increase in temperature?
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MCQs: One mole of methane undergoes complete combustion in a stoichiometric amount of air. The reaction proceeds as CH4 + 2O2 → CO2 + 2H2O. Both the reactants and products are in gas phase. ΔH°298 = – 730 kJ/mole of methane. Mole fraction of water vapour in the product gases is about_____________________?
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MCQs: The vapor pressure of the solvent decreased by 10 mm Hg, when a non-volatile solute was added to the solvent. The mole fraction of the solute in the solution is 0.2. What should be the mole fraction of the solvent, if the decrease in vapor pressure of the solvent is required to be 20 mm Hg ?
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MCQs: Cp – Cv for an ideal gas is equal to________________?
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MCQs: Real gases approach ideal behaviour at___________________?
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MCQs: In the reaction, represented by Na2CO3 + HC1 → NaHO3 + NaCl, the equivalent weight of Na2CO3 is________________?
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MCQs: The unit of Cp in S.I. units is___________________?
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MCQs: Simultaneous doubling of the absolute temperature of a gas and reduction of its pressure to half will result in _____________ in the volume of the gas?
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MCQs: If the absolute temperature of an ideal gas is tripled and simultaneously the pressure is reduced to one third; then the volume of gas will _______________?
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MCQs: Refluxing of part of the distillate in a fractionating column is a ‘recycling operation’, aimed primarily at_______________?
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MCQs: The rate of material _____________ is zero in case of a steady state system?
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MCQs: Pick out the wrong unit conversion of heat transfer co-efficient?
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MCQs: Viscosity of atmospheric air may be about _____________ centipoise?
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MCQs: Kopp’s rule is concerned with the calculation of__________________?
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MCQs: Validity of the relationship, inputs = outputs, holds good for the system at steady state________________?
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