1st Year Chemistry MCQS with Answers Chapter 9

Google Ads1

1st Year Chemistry MCQS with Answers


An aqueous solution of ethanol in water has vapour pressure
Equal to that of ethanol
More than that of H2O
less than that of water
Equal to that water

The liquid pair which is not completely miscible is
Phenol and water
Benzene and toluene
CH3OH and water
Alcohol and water

The relative lowering of vapour pressure is equal to the mole fraction of the solute. This law is known as
Henry’s law
Vant hoff’s law
Raoult’s law
Ostwald dilution law

Depression in the F.P is directly proportional to
Molality of solvent
Molality of solution
Molarity of solvent
Molarity of solution

Azeotropic mixture can be separated into pure components by
Distillation
None
Fractional distillation
Vacuum distillation

18 g of glucose is dissolved in 90 g of water. The relative lowering of vapour pressure is equal to
5-Jan
5.1
6
Jan-51

Azeotrpic mixture of two liquids boils at a lower temperature than either of them, when
It shows negative deviation from Raoult’s law
Is is metastable
It is saturated
Is shows positive deviation from Raoult’s law
Google Ads