Solutions And Surface Chemistry — Part 1 MCQs with Explanations

The correct answer is Option B: Gas in liquid . Here's why: * A colloidal system is a mixture where one substance is dispersed evenly throughout another. * Soda water is essentially carbon dioxide gas (CO₂) dissolved in water (a liquid). * Therefore, soda water represents a gas (CO₂) dispersed in a liquid (water) . Let's look at why the other options are incorrect: * Option A: Liquid in gas This would be something like fog or mist, where tiny liquid droplets are suspended in air (a gas). * Option C: Solid in gas This would be something like smoke, where tiny solid particles are suspended in air. * Option D: Liquid in liquid This would be an emulsion, like milk, where tiny droplets of one liquid are dispersed in another liquid. So, to remember: Soda water = Gas (Carbon Dioxide) in Liquid (Water) .

saturated solution is the correct answer to “A solution which contains the maximum amount of the solute that can be dissolved in a given amount of solvent at a particular temperature is called”. This question is standard in competitive examination syllabi for Solutions And Surface Chemistry.

the constant boiling mixture is the correct answer to “Azeotropic mixtures are”. This question is standard in competitive examination syllabi for Solutions And Surface Chemistry.

difference in their densities is the correct answer to “The process of diffusion in gases take place due to the”. This question is standard in competitive examination syllabi for Solutions And Surface Chemistry.

demulsification is the correct answer to “The process of separating of cream from milk is called”. This question is standard in competitive examination syllabi for Solutions And Surface Chemistry.

Silica gel is the correct answer to “Which one of the following is the best example of desiccant”. This question is standard in competitive examination syllabi for Solutions And Surface Chemistry.

Vapour formation above the liquid surface is the correct answer to “Which one of the following is not the result of surface tension”. This question is standard in competitive examination syllabi for Solutions And Surface Chemistry.

remains unaffected is the correct answer to “When oil floats on water, the surface tension of water”. This question is standard in competitive examination syllabi for Solutions And Surface Chemistry.

coagulation is the correct answer to “Muddy water is purified by adding alum due to”. This question is standard in competitive examination syllabi for Solutions And Surface Chemistry.

the normal sodium chloride solution is the correct answer to “Blood has been found isotonic with”. This question is standard in competitive examination syllabi for Solutions And Surface Chemistry.

Chromatography is the correct answer to “. . . . . . . . is one of the most important technique for the separation of a mixture by passing it in solution or suspension through a medium in which the components move at different rates.”. This question is standard in competitive examination syllabi for Solutions And Surface Chemistry.

Volume is the correct answer to “If an unsaturated sugar solution is prepared by mixing 100 grams of sugar with half litre of water, which of the following physical quantities will not change”. This question is standard in competitive examination syllabi for Solutions And Surface Chemistry.

Centrifugation is the correct answer to “Which of the following methods helps in separating cream from milk”. This question is standard in competitive examination syllabi for Solutions And Surface Chemistry.

Neither 1 nor 2 is the correct answer to “Consider the following statements. 1. During the pressure of osmosis, the solvent travels from the concentrated solution to the dilute solution. 2. In the reverse osmosis, external pressure is applied to the dilute solution. Which of the statement(s) given above is/are correct”. This question is standard in competitive examination syllabi for Solutions And Surface Chemistry.

they are easily assimilated and absorbed is the correct answer to “Colloidal medicines are more effective because”. This question is standard in competitive examination syllabi for Solutions And Surface Chemistry.

a-4, b-2, c-1, d-5 is the correct answer to “Match List-I (Colloidal Dispersion) with List-II (Nature of the Dispersion) and select the correct answer: List-I List-II a. Milk 1. Solid in liquid b. Clouds 2. Liquid in gas c. Paints 3. Solids in solids d. Jellies 4. Liquids in liquids 5. Liquid in Solid”. This question is standard in competitive examination syllabi for Solutions And Surface Chemistry.

Tin is the correct answer to “Which one of the following substances is not a mixture”. This question is standard in competitive examination syllabi for Solutions And Surface Chemistry.

surface tension is the correct answer to “Soaps clean surface on the principle is based on”. This question is standard in competitive examination syllabi for Solutions And Surface Chemistry.

fermentation is the correct answer to “The process by which milk is converted into curd is called”. This question is standard in competitive examination syllabi for Solutions And Surface Chemistry.

dielectric constant of water is the correct answer to “Water is a good solvent. This is due to high”. This question is standard in competitive examination syllabi for Solutions And Surface Chemistry.

decrease in temperature and increase in gas pressure is the correct answer to “The solubility of a gas in liquid increases with”. This question is standard in competitive examination syllabi for Solutions And Surface Chemistry.

The egg will shrink is the correct answer to “A hard shell of an egg was dissolved in HCl. The egg was then placed in a concentration solution of NaCl. What will happen”. This question is standard in competitive examination syllabi for Solutions And Surface Chemistry.

1 and 2 is the correct answer to “Which of the following is an example of sublimation? 1. Dry ice 2. Camphor 3. Ice”. This question is standard in competitive examination syllabi for Solutions And Surface Chemistry.

Al(OH)3 is the correct answer to “Lake test of Al 3+ ion is based on adsorption of blue litmus on solid surface of”. This question is standard in competitive examination syllabi for Solutions And Surface Chemistry.

exactly 7 is the correct answer to “The pH value of the solution obtained by complete neutralisation of hydrochloric acid and sodium hydroxide solution will be”. This question is standard in competitive examination syllabi for Solutions And Surface Chemistry.

Liquid in a gas is the correct answer to “Which type of colloidal system is expressed in the fog”. This question is standard in competitive examination syllabi for Solutions And Surface Chemistry.

a-2, b-3, c-4, d-1 is the correct answer to “Match the following columns. Column-I Column-II a. Soap suds 1. Emulsion b. Silt in water 2. Foam c. Opal 3. Sol d. Mayonnaise 4. Gel”. This question is standard in competitive examination syllabi for Solutions And Surface Chemistry.

surface tension decreases is the correct answer to “If detergent is added”. This question is standard in competitive examination syllabi for Solutions And Surface Chemistry.

shrinking in size of the cell is the correct answer to “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”. This question is standard in competitive examination syllabi for Solutions And Surface Chemistry.

Δ H > 0 is the correct answer to “Which one of the following is not applicable to the phenomenon of adsorption”. This question is standard in competitive examination syllabi for Solutions And Surface Chemistry.

Colloidal sulphur is the correct answer to “Which of the following colloidal solution is commonly used as germ killer”. This question is standard in competitive examination syllabi for Solutions And Surface Chemistry.

stabilise the colloid and prevent crystallisation is the correct answer to “Gelatin is a lyophilic colloid. It is mostly used in making ice-creams in order to”. This question is standard in competitive examination syllabi for Solutions And Surface Chemistry.

Blood is the correct answer to “Which is a natural colloid”. This question is standard in competitive examination syllabi for Solutions And Surface Chemistry.

Suspension is the correct answer to “Which of the following is a heterogeneous mixture”. This question is standard in competitive examination syllabi for Solutions And Surface Chemistry.

Heterogeneous mixture is the correct answer to “Soil is an example of which of the following”. This question is standard in competitive examination syllabi for Solutions And Surface Chemistry.

Cheese is the correct answer to “Which of the following is an example of colloidal solution of liquid in solid”. This question is standard in competitive examination syllabi for Solutions And Surface Chemistry.

A is true, but R is false is the correct answer to “Assertion (A) In osmosis, solvent molecules pass through a semipermeable membrane from a more dilute solution to a more concentrated one, when these two are separated by the semi-permeable membrane. Reason (R) The vapour pressure of the solvent over the dilute solution is less than that over the concentrated solution.”. This question is standard in competitive examination syllabi for Solutions And Surface Chemistry.

molar concentration is the correct answer to “Isotonic solutions have the same”. This question is standard in competitive examination syllabi for Solutions And Surface Chemistry.

low temperature is the correct answer to “Physical adsorption becomes appreciable at”. This question is standard in competitive examination syllabi for Solutions And Surface Chemistry.

Heterogeneous catalysis is the correct answer to “Which kind of catalysis can be explained on the basis of adsorption theory”. This question is standard in competitive examination syllabi for Solutions And Surface Chemistry.