The vapour pressure of a solution (made by dissolving a solute in a solvent) is __________ that of the pure solvent.

What is the simplest formula of a compound containingof element A (atomic weight =andof element B (atomic weight =?

At standard conditions,
N₂ + 2O₂ 2NO₂; ΔG° =kJ/mole
NO + O₂ 2NO₂; ΔG° = -kJ/mole
The standard free energy of formation of NO in kJ/mole is

At higher temperature, molal heat capacities of most of the gases (at constant pressure) __________ with increase in temperature.

In the reaction, Ca + 2H₂O = Ca(OH)₂ + H₂ ; what volume (c.c.) of hydrogen at STP would be liberated, when 8 gm of calcium reacts with excess water ? (atomic weight of calcium = 40)

Viscosity of 1 centipoise is equal to 1 centis-toke in case of

Heat of neutralisation of HCl and NaOH is - 57.kJ/Kg mole. The heat of ionisation of water will be __________ kJ/Kg mole.

pH value of H₂SO₄ (concentration) is

How many phases are present at eutectic point ?

The increase in the temperature of the aqueous solution will result in decrease of its

The amount of Zn (atomic weight =required to formc.c. of H₂ at N.T.P. on treatment with dilute H₂SO₄ will be __________ gm.

Which of the following gases is the most soluble in water ?

At higher temperature, molal heat capacities of most of the gases (at constant pressure) __________ with increase in temperature.

pH value of a solution containing 1 gm of hydrogen ion per litre will be

Claussius Clapeyron equation applies to the __________ process.

In a chemical process, the recycle stream is purged for

Unrestrained expansion of an ideal gas does not result in its cooling due to the reason that the gas molecules

The density of a gas 'X' is twice that of another gas 'Y'. If the molecular weight of gas 'Y' is 'M'; then the molecular weight of the gas 'X' will be

If 1 Nm³ of O₂ contains 'N' number of molecules, then number of molecules in 2Nm³ of SO₂ will be

__________ chart is a graph related to Antonie equation.

The viscosity of water at room temperature may be around one

Assuming applicability of ideal gas law, the pure component volume of the vapor in a saturated gas can be calculated from theoretical relationship. The volumetric composition of a vapor saturated gas is independent of the

The most convenient way of expressing solution concentration is in terms of

Degrees of freedom will be equal to the number of components for a system comprising of

Air at a temperature of 20°C andmm Hg pressure has a relative humidity of 80%. What is its percentage humidity ? Vapour pressure of water at 20°C is 17.5 mm Hg.

Saturated solution of benzene in water is in equilibrium with a mixture of air and vapours of benzene and water at room temperature and pressure. Mole fraction of benzene in liquid is x_B and the vapour pressures of benzene and water at these conditions are p_v^B and p_v^w respectively. The partial pressure of benzene in air-vapour mixture is

Unit of mass velocity is

The percentage ratio of the partial pressure of the vapor to the vapor pressure of the liquid at the existing temperature is

A perfectly insulated container of volume V is divided into two equal halves by a partition. One side is under vacuum, while the other side has one mole of an ideal gas (with constant heat capacity) atK. If the partition is broken, the final temperature of the gas in the container

The heat capacity of most substances is greater for the __________ state.

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 = -kJ/mole of methane. If the average specific heat of all the gases/vapour isJ/mole.K, the maximum temperature rise of the exhaust gases in °C would be approximately equal to

pH value of a solution containing equal concentration of hydroxyl and hydrogen ions will be

With increase in temperature, the surface tension of water

The temperature at which real gases obey the ideal gas law over a wide range of pressure is called the __________ temperature.

As per Kirchoff s equation, the heat of reaction is affected by the

The percentage ratio of the partial pressure of the vapor to the vapor pressure of the liquid at the existing temperature is

Enthalpy change resulting, when unit mass of solid is wetted with sufficient liquid, so that further addition of liquid produces no additional thermal effect, is called the heat of

The temperature at which real gases obey the ideal gas law over a wide range of pressure is called the __________ temperature.

The total number of atoms in 8.5 gm of NH₃ is __________ x 10²³.

Na₂SO₄. 10H₂O crystals are formed by coolingKg ofby weight aqueous solution of Na₂SO₄. The final concentration of the solute in the solution is 10%. The weight of crystals is

The atomic weight of helium is 4 times that of hydrogen. Its diffusion rate as compared to hydrogen will be __________ times.

Elements in a periodic table are arranged in order of their

Which of the following gases will have the- highest kinetic energy per mole at the same pressure & temperature ?

kg of Na₂SO₄ (molecular weight =is present inkg of an aqueous solution. The solution is cooled such that.kg of Na₂SO₄ .10H₂O crystals separate out. The weight fraction of Na₂SO₄ in the remaining solution is

No cooling occurs, when an ideal gas undergoes unrestrained expansion, because the molecules

Osmotic pressure exerted by a solution prepared by dissolving one gram mole of a solute in 22.4 litres of a solvent at 0°C will be __________ atmosphere.

For most salts, the solubility increases with rise in temperature, but the solubility of __________ is nearly independent of temperature rise.

Atmospheric pressure corresponds to a hydrostatic head of

With increase in the solute concentration, the specific heat of aqueous solutions

In general, the specific heats of aqueous solutions __________ with increase in the concentration of the solute.