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Class 12 Mcq

Class 12 Chemistry के इस tag से जुड़े questions। हर question के साथ chapter, topic, level और difficulty दी गई है।

ChemistryIn an ideal solution, what happens to the solvent’s partial vapour pressure when its mole fraction decreases?Class 12Chapter 01: Solutions4: Vapour PressureLevel 7Easy ChemistryWhich option gives the most useful correct statement related to vapour pressure?Class 12Chapter 01: Solutions4: Vapour PressureLevel 6Easy ChemistryIn an ideal binary solution, the total vapour pressure is 100 kPa and the partial pressure of A is 35 kPa. What is the partial pressure of B?Class 12Chapter 01: Solutions4: Vapour PressureLevel 5Easy ChemistryIf the surface area of a liquid is increased, what will be the final effect on equilibrium vapour pressure?Class 12Chapter 01: Solutions4: Vapour PressureLevel 8Easy ChemistryIf intermolecular attraction in a liquid is strong, how will its vapour pressure generally be affected?Class 12Chapter 01: Solutions4: Vapour PressureLevel 6Easy ChemistryWhy is the heat of mixing nearly zero when an ideal solution forms?Class 12Chapter 01: Solutions4: Vapour PressureLevel 10Medium ChemistryWhich statement is most suitable for identifying an ideal solution?Class 12Chapter 01: Solutions4: Vapour PressureLevel 9Easy ChemistryIn which situation will the equilibrium vapour pressure of a liquid be properly defined?Class 12Chapter 01: Solutions4: Vapour PressureLevel 7Easy ChemistryWhat is the most important difference between vapour pressure and rate of evaporation?Class 12Chapter 01: Solutions4: Vapour PressureLevel 10Medium ChemistryIf the vapour pressure of a liquid is less than external pressure, what can be said about boiling at that temperature?Class 12Chapter 01: Solutions4: Vapour PressureLevel 7Easy ChemistryWhich option is a correct unit of vapour pressure?Class 12Chapter 01: Solutions4: Vapour PressureLevel 3Easy ChemistryIf two identical solutions differ only in temperature, how will the vapour pressure of the solution at higher temperature compare?Class 12Chapter 01: Solutions4: Vapour PressureLevel 6Easy ChemistryA liquid has very low vapour pressure. Which statement about its normal boiling point is more reasonable?Class 12Chapter 01: Solutions4: Vapour PressureLevel 7Easy ChemistryIn an ideal solution, pure vapour pressure of A is greater than that of B. Their liquid-phase mole fractions are equal. Which component will have the higher proportion in the vapour phase?Class 12Chapter 01: Solutions4: Vapour PressureLevel 10Medium ChemistryWhy is it difficult to directly measure vapour pressure of a liquid in an open vessel?Class 12Chapter 01: Solutions4: Vapour PressureLevel 8Easy ChemistryWhy does adding a non-volatile solute increase the boiling point of a solution?Class 12Chapter 01: Solutions4: Vapour PressureLevel 8Easy ChemistryWhy does the boiling point of a liquid decrease when the external pressure is reduced?Class 12Chapter 01: Solutions4: Vapour PressureLevel 8Easy ChemistryIf solute particles associate with each other, what happens to lowering of vapour pressure?Class 12Chapter 01: Solutions4: Vapour PressureLevel 11Medium ChemistryWhy can lowering of vapour pressure due to an electrolyte be greater than the simple expected value?Class 12Chapter 01: Solutions4: Vapour PressureLevel 11Medium ChemistryWhat is the main basis for calling relative lowering of vapour pressure a colligative property?Class 12Chapter 01: Solutions4: Vapour PressureLevel 9Easy