Surface Chemistry JEE Mains Questions. We covered all the Surface Chemistry JEE Mains Questions in this post for free so that you can practice well for the exam.
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Mock Test on Surface Chemistry for Students
When blood cells are placed in a solution of KCl whose osmotic pressure is greater than that of the cell fluid, this occurs due to the
(a) shrinking in size of the cell.
(b) increase in the size of the cell.
(c) no change in size.
(d) first shrinking and then regaining the original size.
Option b – increase in the size of the cell
Which one of the following statements is not correct?
(a) The boiling point of an aqueous solution is higher than that of pure water.
(b) The addition of solutes to a solution causes an increase in its water potential.
(c) The vapor pressure of the water in a solution is lower than that of pure water.
(d) When a solution is separated from water by semi-permeable membrane water starts a movement.
Option b – The addition of solutes to a solution causes an increase in its water potential
Consider the following statements. I. During the pressure of osmosis, the solvent travels from the concentrated solution to the dilute solution. II. In reverse osmosis, external pressure is applied to the dilute solution. Which of the statement(s) given above is/are correct?
(a) Only I
(b) Only II
(c) Both I and II
(d) Neither I nor II
Option d – Neither I nor II
Assertion (A) In osmosis, solvent molecules pass through a semi-permeable membrane from a more dilute solution to a more concentrated one, when these two are separated by the semi-permeable membrane. Reason (R) The vapor pressure of the solvent over the dilute solution is less than that over the concentrated solution. Codes
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true, but R is not the correct explanation of A
(c) A is true, but R is false
(d) A is false, but R is true
Option c – A is true, but R is false
An emulsion is a colloid of an
(a) gas in a liquid.
(b) the liquid in a liquid.
(c) the liquid in a gas.
(d) gas in a solid.
Option b – the liquid in a liquid
…………. is one of the most important techniques for the separation of a mixture by passing it in solution or suspension through a medium in which the components move at different rates.
(a) Filtration
(b) Distillation
(c) Evaporation
(d) Chromatography
Option d – Chromatography
A hard shell of an egg was dissolved in HCI. The egg was then placed in a concentrated solution of NaCl. What will happen?
(a) The egg will shrink.
(b) The egg will swell.
(c) The egg will become harder.
(d) There will be hardly any visible change.
Option a – The egg will shrink
Soil is an example of which of the following?
(a) Homogeneous mixture
(b) Molecule
(c) Compound
(d) Heterogeneous mixture
Option d – Heterogeneous mixture
If an unsaturated sugar solution is prepared by mixing 100 grams of sugar with half a liter of water, which of the following physical quantities will not change?
(a) Mass
(b) Density
(c) Concentration
(d) Volume
Option d – Volume
Which one of the following substances is not a mixture?
(a) Tin
(b) Seawater
(c) Soil
(d) Air
Option a – Tin
The pH value of the solution obtained by complete neutralization of hydrochloric acid and sodium hydroxide solution will be
(a) exactly 7
(b) zero
(c) more than 7
(d) less than 7
Option a – exactly 7
Azeotropic mixtures are
(a) a mixture of two solids.
(b) those which boil at different temperatures.
(c) those which can be fractionally distilled.
(d) the constant boiling mixture.
Option d – the constant boiling mixture
The solubility of a gas in liquid increases with
(a) an increase in temperature.
(b) reduction in gas pressure.
(c) decrease in temperature and increase in gas pressure.
(d) amount of liquid taken.
Option c – decrease in temperature and increase in gas pressure
A solution is
(a) a homogeneous mixture of two or more substances.
(b) a solid dissolved in a liquid.
(c) a solid dissolved in water.
(d) a mixture of two liquids.
Option a – a homogeneous mixture of two or more substances
A solution that contains the maximum amount of the solute that can be dissolved in a given amount of solvent at a particular temperature is called
(a) saturated solution
(b) unsaturated solution
(c) supersaturated solution
(d) None of the above
Option a – saturated solution
Water is a good solvent. This is due to the high
(a) dielectric constant of water.
(b) the surface tension of water.
(c) specific heat of the water.
(d) heat fusion of water.
Option a – dielectric constant of water
Which one of the following substances is not a mixture?
(a) Ice
(b) Ice cream
(c) Air
(d) Honey
Option a – Ice
Blood has been found isotonic with
(a) the saturated solution of NaCl.
(b) the saturated solution of KCI.
(c) the saturated solution of 1 : 1 mixture of NaCl and KCI.
(d) the normal sodium chloride solution.
Option d – the normal sodium chloride solution
The process by which milk is converted into curd is called
(a) pasteurization
(b) vernalization
(c) fermentation
(d) retting
Option c – fermentation
Muddy water is purified by adding alum due to
(a) osmosis
(b) emulsification
(c) coagulation
(d) dialysis
Option c – coagulation
The process of separating cream from milk is called
(a) electro-osmosis
(b) emulsion
(c) emulsification
(d) demulsification
Option d – demulsification
The heating of rubber with sulfur is known as ………
(a) galvanization
(b) sulphonation
(c) bessemerisation
(d) vulcanization
Option d – vulcanization
Isotonic solutions have the same
(a) normality
(b) molar concentration
(c) strength
(d) density
Option b – molar concentration
The process of diffusion in gases takes place due to
(a) the difference in their densities.
(b) the difference in their composition.
(c) equal in densities.
(d) All of the above
Option a – the difference in their densities
Which of the following methods helps in separating cream from milk?
(a) Distillation
(b) Centrifugation
(c) Chromatography
(d) Sublimation
Option b – Centrifugation
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