Which of the following expressions defines the Baume gravity scale for liquids lighter than water ?

Which of the following is not a unit of pressure?

The atomic heat capacities of all solid elements __________ with decrease in temperature.

The OH^- concentration in a solution having pH value 3 is

Sometimes, in chemical processes, a part of the outlet stream is rejected as waste in order to keep the impurity level in the system within limits. This phenomenon is termed as the

2 litres of nitrogen at N.T.P. weighs __________ gms.

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

A solution having a pH value of 5 is less acidic than the one having a pH value of 2 by a factor of

Which of the following is followed by an ideal solution ?

°API gravity of water at N.T.P. is about

The vapor pressure of the solvent decreased bymm Hg, when a non-volatile solute was added to the solvent. The mole fraction of the solute in the solution is 0.What should be the mole fraction of the solvent, if the decrease in vapor pressure of the solvent is required to bemm Hg. ?

A gas occupies a volume ofc.c at 10°C. If it is heated to 20°C at constant pressure, the new volume of the gas will be __________ c.c.

C_p/C_v for monoatomic gases is

One of the specific gravity scales is "Brix" (used speicifically for sugar solution). It is defined as

Acidity or alkanity of a solution is expressed by its pH value, which is defined as (where, [H⁺] = hydrogen ion concentration in the solution).

Acidity or alkanity of a solution is expressed by its pH value, which is defined as (where, [H⁺] = hydrogen ion concentration in the solution).

A gas occupies a volume ofc.c at 10°C. If it is heated to 20°C at constant pressure, the new volume of the gas will be __________ c.c.

Pick out the wrong statement.

In the reaction, represented by Na₂CO₃ + HC1 → NaHO₃ + NaCl, the equivalent weight of Na₂CO₃ is

Pick out the wrong statement.

The heats of vaporisation of CS₂, C₂H₅OH &H₂O are 26.38.6 & 40.6 KJ/kg mole respectively. The order of decreasing inter-molecular forces in these liquids is

The number of water molecules present in a drop of water weighing 0.gm is 6.x __________

Kopp's rule is helpful in finding the

The reverse process of fractional crystallisation is called

Ideal solution is formed, when its components have zero

Pick out the correct conversion.

The temperature of a gas in a closed container isC. If the temperature of the gas is incresed toC, then the pressure exerted is

A liquid is in equilibrium with its vapor at its boiling point. On an average, the molecules in the liquid and gaseous phases have equal

The density of a liquid iskg/m³. Its value in gin/litre will be equal to

In case of a solution (not of a solid in a liquid), whose total volume is more than the sum of volumes of its components in their pure states, solubility is

1 gm mole of methane (CH₄) contains

1 BTU/ft³ is approximately equal to __________ kcal/m³.

Addition of a non-volatile solute to a solvent produces a __________ in its solvent.

Total energy at a point comprises of __________ energy.

The unit of specific heat at constant pressure, C_p, in SI unit is

Pick out the wrong statement:

'Giga' stands for

For estimation of heat capacity of a solid compound, one can use

The maximum adiabatic flame temperature of fuels in air is __________ the maximum flame temperature in pure oxygen.

Isotonic solutions must have the same

Pure aniline is evaporating through a stagnant air film of 1 mm thickness atK and a total pressure ofKPa. The vapor pressure of aniline atK is 0.1 KPa. The total molar concentration under these conditions is 40.1 mole/m³ . The diffusivity of aniline in air is 0.74xl0^-5m²/s.The numerical value of mass transfer co-efficient is 7.4 x 10^-3. Its units are

The heat of vaporisation __________ with increase in pressure.

What is the total pressure exerted by a mixture of 0.kg mole of benzene, 0.kg mole of toluene and 0.kg mole of o-xylene at 100°C, if their vapor pressures at 100°C areandmmHg respectively ?

Weight oflitres of ammonia at N.T.P. is __________ gm.

The latent heat of vaporisation

Molality is defined as the number of gm moles of solute per __________ of solvent.

Number of gm moles of solute dissolved in one litre of a solution is called its

A chemical process is said to occur under unsteady state, if the

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.kJ/mole for water and 31.kJ/mole for methylcyclohexane. The vapour pressure of water at 150°C is 4.atm. At 150°C, the vapour pressure of methylcyclohexane would be expected to be

Recycling in a chemical process facilitates