Stoichiometry MCQs

How many phases are present at eutectic point?

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.

A car tyre of volume 0.057 m³ is inflated to 300 kPa at 300 K. After the car is driven for 10 hours, the pressure in the tyre increases to 330 kPa. Assume air is an ideal gas and C_v for air is 21 J/mole.K. The change in the internal energy of air in the tyre in J/mole is

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.

Which of the following is not used for computing latent heat of vaporisation?

The heat of solution depends upon the

__________ fuels require the maximum percentage of 'excess air' for complete combustion.

80 kg of Na₂SO₄ (molecular weight = 142) is present in 330 kg of an aqueous solution. The solution is cooled such that. 80 kg of Na₂SO₄.10H₂O crystals separate out. The weight fraction of Na₂SO₄ in the remaining solution is

pH value of an alkaline solution is