Molarity (in mol/l) of distilled or pure water is

• 18

• 81

• 55.56

• 49.87

On dissolving sugar in water at room temperature, solution feels cools to touch . Under which of the following dissolution of sugar will be most rapid ?

• Sugar crystal I cold water

• Sugar crystal in hot water

• Powdered sugar in cold water

• Powdered sugar in hot water

Low concentration of oxygen in blood of people living at high altitude is due to

• Low temperature

• Low atmospheric pressure

• High atmospheric pressure

• Both low temperature and high atmospheric pressure

The value of Henry's Constant is

• Greater for gases with higher solubility

• Greater for gases with lower solubility

• Constant for all gases

Raoult's law become a special case of Henry's law , when

• K_H=p^°_i

• K_H>p^°_i

• K_H<p^°_i

Colligative property depends on

• Nature of solute particles dissolved in solution

• Number of solute particles in solution

• Physical property of the solute particles

• Nature of solvent particles

The value of Henry's Constant for He, H₂, and O₂ are 144.97, 69.16, and 34.86 bar. The correct order of their solubility is

• O₂<He<H₂

• He<O₂<H₂

• He<H₂<O₂

• H₂<He<O₂

A ........................is a homogeneous mixture of two or more substances

From the below options, choose the correct example for gaseous solutions

• Oxygen dissolved in water

• Camphor in nitrogen gas

• Carbon dioxide in water

• Hydrogen in palladium

The solubility of a substance in a solvent depends on

• Temperature

• Pressure

• Nature of solute and solvent

• All are correct