The protective colloid is a type of lyophilic(water loving) colloid which is used to protect thelyophobic colloids from precipitating in an electrolyticsolution. The common example of protective colloidsare : gelatin, casein, hemoglobin, egg albumin etc.
Also to know is, what do you mean by protective colloids?
Medical Definition of protectivecolloid : a lyophilic colloid (as gelatin, a naturalgum, or a cellulose derivative) that when present in smallquantities keeps lyophobic colloids from precipitating underthe coagulating action of electrolytes.
Also, what are colloids used for? Commercial Applications of Colloid A colloid is used as thickening agents inindustrial products such as lubricants, lotions, toothpaste,coatings, etc. In the manufacture of paints and inks,colloids are useful.
In this regard, which is an example of a colloid?
Colloids are common in everyday life. Someexamples include whipped cream, mayonnaise, milk, butter,gelatin, jelly, muddy water, plaster, colored glass, and paper.Every colloid consists of two parts: colloidalparticles and the dispersing medium. Any colloid consistingof a solid dispersed in a gas is called a smoke.
Which is best protective colloid?
Answer: The correct answer is (4) Gelatin. It is thebest protective colloid out of all the given options.Explanation: Gelatin is the best protective colloid since ithas the lowest gold number.
14 Related Question Answers Found
Which one of the following is a Lyophilic colloid?
The examples of lyophilic colloids are: Gelatin,gum, starch and protein..
What are the properties of colloids?
Physical Properties of ColloidalSolutions Stability: Colloids are relatively stable innature. The particles of the dispersed phase are in a state ofcontinuous motion and remain suspended in the solution.Filterability: Colloids require specialized filters known asultrafilters for filtration.
What is meant by Tyndall effect?
The Tyndall effect is the scattering of light asa light beam passes through a colloid. The individual suspensionparticles scatter and reflect light, making the beam visible. Theamount of scattering depends on the frequency of the light anddensity of the particles.
What is hardy Schulze rule?
This observation of Hardy and Schulze areknown as Hardy Schulze law. It can be defined as: Greater isthe valency of the oppositely charged ion of the electrolyte beingadded, the faster is the coagulation. The idea behind this is theattractive electrostatic forces between ions of oppositecharges.
How are colloids stabilized?
Polymeric stabilization ofcolloids Steric stabilization of colloids isachieved by polymer molecules attached to the particle surface andforming a coating, which creates a repulsive force and separatesthe particle from another particle.
What is the definition of colloids in science?
A colloid may be a mixture of one substance thatmay spread out evenly inside another substance. Definition:A colloid is a substance microscopically dispersed evenlythroughout another substance. The dispersed-phase particles have adiameter between about 5 and 200 nanometers.
What is gold number chemistry?
Gold Number is a term used in colloidalchemistry. It is defined as the minimum amount of protectivecolloid in milligrams which prevents a color change from red toviolet of 10ml gold sol by the addition of 1 ml of 10%NaClsolution.
What do you mean by protection of Lyophobic colloidal?
This phenomenon of preventing the coagulation of alyophobic sol due to the addition of some lyophiliccolloid is called sol protection, or protectionof colloids. The lyophilic colloid which prevents thecoagulation of a lyophobic sol is called a protectivecolloid.
Is sugar water a colloid?
Substances such as sugar, salt when put inwater get dissolved completely and form a homogenoussolutions. This means that the molecules of sugar aredispersed uniformly in water. These colloidalparticles when placed in water form colloidalsolutions.
Is fog a colloid?
colloid: fog – Students. Britannica Kids.Homework Help. Fog is an aerosol, a type of colloidconsisting of a liquid (water) dispersed in a gas(air).
Is milk a solution?
Milk is not a solution because it has morethan one phase suspended in it — it has a liquid phase and a solidphase. Unhomogenized milk is not a solution, it’s asuspension because the fat (aka cream) will separate from the restof the milk and rise to the top, since fat is less densethan water.
Is mayonnaise a colloid?
In mayonnaise, the emulsifier is egg yolk, whichcontains lecithin, a fat emulsifier. Chemically, emulsions arecolloids, heterogeneous mixtures composed of tiny particlessuspended in another immiscible (unmixable) material. The particlesin a colloid can be solid, liquid or bubbles ofgas.
Is paint a colloid?
Paints are a type of mixture called acolloid. In a colloid, particles of one substance aremixed and dispersed with particlues of another substance- but theyare not dissolved in it. In an paint the pigmanet isdispersed in the liquid from the binding medium and solventsolution.
Is muddy water a colloid?
Suspensions are heterogeneous mixtures from which someof the particles settle with time. Muddy water is a classicsuspension, with relatively large solid particles suspended inwater. Colloids are heterogeneous mixtures which donot settle out like suspensions, but are not true solutionseither.