The pH value of a solution is 5.If the hydrogen ion concentration is decreased hundred times, the solution will be
The combustion equations of carbon and carbon monoxide are as follows:C + O2 = CO2, ΔH = -kJ/kg . mole CO + 1/2 O2 = CO2, ΔH = - 284.5 kJ/kg. mole. The heat of formation of CO is __________ kJ/kg. mole.
Pick out the wrong unit conversion of mass transfer co-efficient.
Pick out the wrong unit conversion of heat transfer rate.
One kg of saturated steam at 100°C and 1.bar is contained in a rigid walled vessel. It lias a volume of 1.m3. It cools to 98°C ; the saturation pressure is 0.bar ; one kg of water vapour under these conditions has a volume of 1.m3. The amount of water vapour condensed (in kg) is
Two solutions A1 and A2 have pH value of 2 and 6 respectively. It implies that the solution
The equilibria relations in a multicom-ponent and multiphase system can not be calculated with the help of the
With increase in the temperature of pure (distilled) water, its
Which of the following is not used for computing latent heat of vaporisation ?
The vapor pressures of benzene and toluene are 3 and 4/3 atmospheres respectively. A liquid feed of 0.4 moles of benzene and 0.6 moles of toluene is vapourised. Assuming that the products are in equilibrium, the vapor phase mole fraction of benzene is
__________ kg of CaC03 on heating will givekg of CaO.
If 1.5 moles of oxygen combines with aluminium to form Al2O3, then the weight of aluminium (atomic weight =) used in this reaction is __________ gm.
Osmotic pressure of the solution can be increased by
1 kg/cm2 is equal to
An azeotropic solution of two liquids has boiling point lower than either of them, when it
Concentration of a solution expressed in terms of __________ is independent of temperature.
Assume that benzene is insoluble in water. The normal boiling points of benzene and water are 80.1 and 100°C respectively. At a pressure of 1 atm, the boiling point of a mixture of benzene and water is
Saturated molal absolute humidity of the vapor-gas mixture depends upon the
1 centipoise is equivalent to
Pick out the wrong statement.
Kinetic theory of gases stipulates that, the
Hess's law of constant heat summation is based on conservation of mass. It deals with
Dissolving a solute in a solvent does not change its
"The heat capacity of a solid compound is approximately equal to the sum of the heat capacities of the constituent elements." This is the statement of
A bypass stream in a chemical process is useful, because it
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
Which of the following holds good for a solution obeying Raoult's law (i.e., an ideal solution) (where, ΔH = heat of mixing, and ΔV = volume change on mixing ) ?
For water evaporating into usaturated air under adiabatic conditions and at constant pressure, the __________ remains constant throughout the period of vaporisation.
The effect of pressure on the heat capacity of the gases __________ is negligible.
Validity of the relationship, inputs = outputs, holds good for the system at steady state
1 BTU/lb.←°F is equivalent to __________ kcal/kg.°C.
The crystallisation of a solute from a solution may be done by
Colligative properties of a dilute solution are those which depend entirely upon the
Enthalpy of formation of NH3 is -kJ/kg mole. The enthalpy change for the gaseous reaction, 2NH3 → N2 + 3H2, is equal to __________ kJ/kg. mole.
The unit of dynamic viscosity is
Heat of neutralisation of a strong acid and strong base is always a constant value, i.e.,KJ/Kg mole. This is because
For a given mass of a gas at constant temperature, if the volume 'V' becomes three times, then the pressure 'P' will become
The average translational kinetic energy with which a gas molecule is endowed is dependent on its
Pick out the wrong unit conversion of heat transfer co-efficient.
At a constant volume, for a fixed number of moles of a gas, the pressure of the gas increases with rise of temperature due to
Which of the following ratios defines the recycle ratio in a chemical process ?
Solutions having the same osmotic pressure are called __________ solutions.
Percentage saturation of a vapor bearing gas is always __________ the relative saturation.
Cp is expressed in S.I. unit as
A reduction process is accompanied with increase in the
1 ata is equivalent to
Number of gm moles of solute dissolved in 1 kg of solvent is called its
The heat of vaporisation __________ with increase in pressure.
The molecular velocity of a real gas is proportional to (where, T = absolute temperature of the gas).
Which of the following is not a unit of kinematic viscosity ?
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