Q.1
For a neutral solution (pH = 7), the value of[H⁺] [OH⁻] is equal to
Q.2
Kinematic viscosity of 1 m² /second is equivalent to __________ stokes.
Q.3
The forces causing the vaporisation of liquid are derived from the Kinetic energy of translation of its molecules. The heat of vaporisation
Q.4
Osmotic pressure of a dilute solution of a non volatile solute in a solvent obeying Raoult's law is proportional to the
Q.5
500 c.c. each of hydrogen at 700 mm Hg pressure and oxygen at 600 mm Hg pressure are put together in a vessel of 1 litre capacity. The final pressure of the gas mixture will be __________ mm Hg.
Q.6
°API gravity of water at N.T.P. is about
Q.7
A gaseous mixture contains 14 kg of N₂, 16 kg of O₂ and 17 kg of NH₃. The mole fraction of oxygen is
Q.8
On addition of 1 c.c. of dilute hydrochloric acid (1% concentration) to 80 c.c. of a buffer solution of pH = 4, the pH of the solution becomes
Q.9
Molar heat capacity of water in equilibrium with ice at constant pressure is
Q.10
The weight fraction of methanol in an aqueous solution is 0.64. The mole fraction of methanol XM satisfies
Q.11
The osmotic pressure of a solution is directly proportional to the
Q.12
At a temperature of 0°K, the molecules of a gas have only __________ energy.
Q.13
Heat capacity of air can be approximately expressed as, Cp = 26.693 + 7.365 x10⁻³ T, where, Cp is in J/mole.K and T is in K. The heat given off by 1 mole of air when cooled at atmospheric pressure from 500°C to - 100°C is
Q.14
A sugar solution containing __________ percent sugar is equivalent to 1 Brix.
Q.15
The total volume occupied by a gaseous mixture is equal to the sum of the pure component volumes. This is the __________ law.
Q.16
S.T.P. corresponds to
Q.17
Vapor pressure of a solution is proportional to(where, Sv and St are mole fraction of solvent and solute respectively).
Q.18
Unit of mass velocity is
Q.19
At room temperature, the product [H⁺] [OH⁻] in a solution is 10⁻¹⁴ moles/litre. If, [OH⁻] = 10⁻⁶ moles/litre, then the pH of the solution will be
Q.20
An aqueous solution of 2.45% by weight H₂SO₄ has a specific gravity of 1.011. The composition expressed in normality is
Q.21
The pressure under which liquid and vapor can co-exit at equilibrium is called the __________ vapor pressure.
Q.22
A compound was found having nitrogen and oxygen in the ratio 28 gm and 80 gm respectively. The formula of the compound is
Q.23
The molar composition of a gas is 10% H₂, 10% O₂, 30% CO₂ and balance H₂O. If 50% H₂O condenses, the final mole percent of H₂ in the gas on a dry basis will be be
Q.24
Raoult's law is not applicable to the
Q.25
Which of the following is not a colligative property?
Q.26
Methane is mixed with stoichiometric proportion of oxygen and completely combusted. The number of additional specifications required to determine the product flow rate and composition is
Q.27
The heat of solution depends upon the
Q.28
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
Q.29
Raoult's law states that 'the equilibrium vapor pressure that is exerted by a component in a solution is proportional to the mole fraction of that component'. This generalisation is based on the assumption that the
Q.30
The value of Trouton's ratio (λb/Tb) for a number of substances is 21 (where, λb = molal that of vaporisation of a substance at its normal boiling point, KCal/kg. mole and Tb = normal boiling point, °K). The Kis-tyakowsky equation is used for calculation of Trouton's ratio of __________ liquids.
Q.31
Hess's law of constant heat summation is based on conservation of mass. It deals with
Q.32
Saturated molal absolute humidity of the vapor-gas mixture depends upon the
Q.33
A butane isomerisation process produces 70 kmole/hr of pure isobutane. A purge stream removed continuously, contains 85% n-butane and 15% impurity (mole%). The feed stream is n-butane containing 1% impurity (mole%). The flow rate of the purge stream will be
Q.34
The pressure of 'V' litres of a dry gas is increased from 1 to 2 kgf/cm² at a constant temperature. The new volume will become
Q.35
Kopp's rule is useful for the determination of
Q.36
Except for monoatomic gases, the molal heat capacity at constant volume for all gases is __________ Kcal/Kg mole.° K.
Q.37
Addition of a non-volatile solute to a solvent produces a __________ in its solvent.
Q.38
The temperature at which a real gas obeys Boyle's law is termed as the
Q.39
6 gms of magnesium (atomic weight = 24), reacts with excess of an acid, the amount of H₂ produced will be __________ gm. gm.
Q.40
One micron is equal to __________ cm.
Q.41
Pick out the wrong unit conversion of thermal conductivity.
Q.42
The temperature at which the second Virial co-efficient of a real gas is zero is called the
Q.43
The vapor pressure of liquids of similar chemical nature at any particular temperature __________ with increase in the molecular weight.
Q.44
The depression in freezing point of a solution is
Q.45
A chemical process is said to occur under unsteady state, if the
Q.46
In a binary liquid solution of components A and B, if component A exhibits positive deviation from Raoult's law, then component B
Q.47
1 bar is almost equal to __________ atmosphere.
Q.48
Which of the following expressions defines the Baume gravity scale for liquids heavier than water?
Q.49
Pick out the wrong statement:
Q.50
Which of the following ideal gas laws are not applicable to mixture of gases ?
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