Pick out the wrong statement?
Pick out the wrong statement?
1 ata is equivalent to__________?
In case of a solution (not of a solid in a liquid), whose total volume is less than the sum of the volumes of its components in their pure states, solubility is__________?
At 100°C, water and methylcyclohexane both have vapour pressures of 1 atm. Also at 100°C, the latent heats of vaporisation of these compounds are 40.63 kJ/mole for water and 31.55 kJ/mole for methylcyclohexane. The vapour pressure of water at 150°C is 4.69 atm. At 150°C, the vapour pressure of methylcyclohexane would be expected to be__________?
The boiling points for pure water and pure toluene are 100°C and 110.6°C respectively. Toluene and water are completely immiscible in each other. A well agitated equimolar mixture of toluene and water are prepared. The temperature at which the above mixture will exert a pressure of one standard atm. is__________?
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__________?
For an ideal gas, the compressibility factor__________?
An Azeotropic solution of two liquids has boiling point lower than either of them, when it__________?
A vapor whose partial pressure is less than its equilibrium vapor pressure is called the __________ vapor?
Specific gravity on API scale is given by the relation (where, G = specific gravity at 15.5°C) ?
Internal energy of a substance comprises of the __________ energy?
Isotonic solutions must have the same__________?
Osmotic pressure of a dilute solution of a non volatile solute in a solvent obeying Raoult’s law is proportional to the__________?
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__________?
For a given mass of a gas at constant temperature, if the volume ‘V’ becomes three times, then the pressure ‘P’ will become__________?
One Newton is equal to __________ dynes?
In a binary liquid solution of components „A‟ and „B‟, if component „A‟ exhibits positive deviation from Raoult’s law, then component „B‟ ?
__________ kg of CaC03 on heating will give 56 kg of CaO?
In case of a ternary system involving two liquid components and a solute, the ratio of the concentration of the solute in the two phases at equilibrium is called the distribution co-efficient. The distribution co-efficient depends upon the__________?
The elevation in boiling point of a solution is proportional to the __________ of the solution?
What is the total pressure exerted by a mixture of 0.45 kg mole of benzene, 0.44 kg mole of toluene and 0.23 kg mole of o-xylene at 100°C, if their vapor pressures at 100°C are 1340, 560 and 210 mmHg respectively ?
The evaporation of aqueous solution of sugar causes its molarity to__________?
Under conditions of equal reduced pressure and equal reduced temperature, substances are said to be in the ‘corresponding states’. At equal reduced conditions i.e., at the corresponding state, the __________ of different gases are nearly the same?
Which of the following is an exothermic reaction ?
Number of gram equivalent of solute dissolved in one litre of solution is called its__________?
Kopp’s rule is helpful in finding the__________?
Solution made by dissolving equimolar amounts of different solutes in the same amount of a given solvent will have the__________?
Mass number of an atom is the sum of the numbers of__________?
Which of the following is not a unit of pressure ?
The heat of adsorption of a gas caused by Van der Waals forces of attraction and capillarity is equal to the heat of__________?
1 BTU/ft3 is approximately equal to __________ kcal/m3?
A solution is made by dissolving 1 kilo mole of solute in 2000 kg of solvent. The molality of the solution is__________?
Avogadro number is the number of molecules in one __________ of a gas?
Which equation is not an equation of state ?
A sample of well water contains 140 gm/m3 Ca2+ ions and 345 gm/m3 Na+ ions. The hardness of the sample of water, expressed in terms of equivalent CaCO3 in gm/m3 is (assuming atomic masses of Ca :40, Na : 23, C : 12, O : 16) ?
For a reaction, X → Y, if the concentration of ‘X’ is tripled; the rate becomes nine times. The order of reaction is__________?
1 kg/cm2 is equal to__________?
One kg of saturated steam at 100°C and 1.01325 bar is contained in a rigid walled vessel. It lias a volume of 1.673 m3. It cools to 98°C; the saturation pressure is 0.943 bar ; one kg of water vapour under these conditions has a volume of 1.789 m3. The latent heat of condensation (kJ/kg-1 ) under these conditions is__________?
The hydroxyl ion (OH-) concentration in a solution having pH value 3 will be__________?
For estimation of heat capacity of a solid compound, one can use__________?
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__________?
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) ?
The heat change for the reaction, C(s) + 2S(s) → CS2(l), is 104.2 kJ. It represents the heat of__________?
Raoult’s law is obeyed by a __________ solution?
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__________?
Cp equals Cv at__________?
Which of the following ratios defines the recycle ratio in a chemical process ?
N2 content in a urea sample was found to be only 42%. What is the actual urea content of the sample? (Molecular weight of urea = 60) ?
The number of atoms of oxygen present in 11.2 litres of ozone (O3) at N.T.P. are__________?
Diffusion is that property by virtue of which a perfume bottle when opened up in a room, makes the whole room fragrant with its smell. If a perfume ‘X’ diffuses twice as fast as another perfume ‘Y’; what is the molecular weight of ‘Y’, if the vapor density of gas ‘X’ is 2? Molecular weight of gas ‘X’ is to be assumed to be 2 ?

Pick out the wrong statement ?

A. ‘Reduced temperature’ of a substance is the ratio of its existing temperature to its critical temperature, both expressed on Celsius scale
B. ‘Reduced pressure’ is the ratio of the existing pressure of a substance to its critical pressure
C. ‘Reduced volume’ is the ratio of the existing molal volume of a substance to its critical molal volume
D. None of these

Correct Answer: A. ‘Reduced temperature’ of a substance is the ratio of its existing temperature to its critical temperature, both expressed on Celsius scale ✔

Last Updated: March 07, 2019