Description : The dispersed phase in colloidal iron (III) hydroxide and collodial gold is positively and negtively charged respectively with of the following statem
Last Answer : The dispersed phase in colloidal iron (III) hydroxide and collodial gold is positively and negtively ... readily than the iron (III) hydroxide sol.
Description : Colloidal solution of gold prepared by different methods of different colours because of :
Last Answer : Colloidal solution of gold prepared by different methods of different colours because of : A ... particles D. impurities produced by different methods
Description : The colloidal solution of gold prepared by different methods have different colours. Why ?
Last Answer : Ans. Due to difference in the size of colloidal particles.
Description : The protecting power of lyophilic colloidal sol is expressed in terms of (1) Oxidation number (2) Coagulation value (3) Gold number (4) Critical miscelle concentration
Last Answer : Gold number
Description : Assertion Colloidal sols scatter light while true solutions do not. Reason The particles in the colloidal sol move slower than that of the true solutions. -Chemistry
Last Answer : Both assertion and reason are true but the reason is not the correct explanation of assertion. The size of colloidal particles is large enough to scatter light while particles of a true solution are too small to scatter light.
Description : Explain why particles of a colloidal solution do not settle down when left undisturbed, while in the case of a suspension they do? -Maths 9th
Last Answer : The colloidal particles are smaller and not heavy. They always remain in a state of zig-zag motion, called Brownian movement, which counters the force of gravity acting on colloidal particles and ... particles of suspension are larger, heavy and have less movement, thus settle down due to gravity.
Description : Which colloidal solution is used in photography? -Do You Know?
Last Answer : Photographic emulsion is a light-sensitive colloid used in film-based photography. Most commonly, in silver-gelatin photography, it consists of silver halide crystals dispersed in gelatin.
Description : Which colloidal solution is commonly used as germ killer? -Do You Know?
Last Answer : colloidal solution is commonly used as germ killer soo therefore the option a is correct
Description : Blood colloidal osmotic pressure mainly maintained by which plasma protein `:-`
Last Answer : Blood colloidal osmotic pressure mainly maintained by which plasma protein `:-` A. Globulin B. Albumin C. Fibrinogen D. Prothombin
Description : In domestic sewage, suspended solids, colloidal and dissolved materials constitute
Last Answer : In domestic sewage, suspended solids, colloidal and dissolved materials constitute A. 0.1 B. 0.056 C. 0.027 D. 0.001
Description : Who called larger colloidal particles of primitives sea as coacervates :
Last Answer : Who called larger colloidal particles of primitives sea as coacervates : A. Fox B. Oparin C. Empedcles D. Haldane
Description : Aerosol is a system of colloidal particles having a size of
Last Answer : Aerosol is a system of colloidal particles having a size of A. `5mum` B. `1-2 mum` C. less than `100 mum` D. more than `10 mum`
Description : Assertion :- A gas mixed with another gas forms a colloidal solution. Reason :- Mixture of gases is homogenous system.
Last Answer : Assertion :- A gas mixed with another gas forms a colloidal solution. Reason :- Mixture of gases is ... . D. If both Assertion & Reason are False.
Description : Assertion :- Filtration of colloidal particles is not possible by filter paper. Reason :- Size of colloidal particle is less than filter paper pores.
Last Answer : Assertion :- Filtration of colloidal particles is not possible by filter paper. Reason :- Size of ... D. If both Assertion & Reason are False.
Description : Fog is a colloidal system of :-
Last Answer : Fog is a colloidal system of :- A. gas in liquid B. liquid in gas C. gas in gas D. gas in solid
Description : Colloidal solution show in `H_(2)O` :-
Last Answer : Colloidal solution show in `H_(2)O` :- A. Paramagnetism B. Scttering of light (tyndall effect) C. Refraction D. All of these
Description : The protcting power of lyophilic colloidal solution is expressed in terms of
Last Answer : The protcting power of lyophilic colloidal solution is expressed in terms of A. Critical number B. ... number C. Coagulation value D. Gold number
Description : Soaps essentially form a colloidal solution in water and remove the greasy matters by :
Last Answer : Soaps essentially form a colloidal solution in water and remove the greasy matters by : A. adsorption B. emulsification C. coagulation D. absorption
Description : The colloidal system in which the disperse phase and dispersion medium are both liquids is known as :
Last Answer : The colloidal system in which the disperse phase and dispersion medium are both liquids is known as : A. an emulsion B. an areosol C. gel D. a foam
Description : Smoke is a colloidal sol of
Last Answer : Smoke is a colloidal sol of A. Gas dispersed in a solid B. solid dispersed in a gas C. solid dispersed in a liquid D. gas dispersed in a liquid
Description : The volume of a colloidal particle `V_C` as compared to the volume of a solute particle in a true solution `V_S` could be
Last Answer : The volume of a colloidal particle `V_C` as compared to the volume of a solute particle in a true solution `V_S` could ... `~ 10^(-3)` D. `~ 10^(3)`
Description : Choose the correct reason(s) for the stability of the lyophobic colloidal particles.
Last Answer : Choose the correct reason(s) for the stability of the lyophobic colloidal particles. A. ... layer of opposite charges around the colloidal particles.
Description : The diameter of colloidal particle is of the order :
Last Answer : The diameter of colloidal particle is of the order : A. `10^(-3)m` B. `10^(-6)m` C. `10^(-15)M` D. `10^(-7)m`
Description : Which of the following represents macromolecular colloidal particles?
Last Answer : Which of the following represents macromolecular colloidal particles? A. Solution of gold B. Cellulose C. Soaps D. Synthetic detergents
Description : which of the following represents a multimolecular colloidal paricles?
Last Answer : which of the following represents a multimolecular colloidal paricles? A. Starch B. A sol of gold C. Proteins D. Soaps
Description : size of colloidal particles may range from:
Last Answer : size of colloidal particles may range from: A. 1 to 1000 nm B. 10 to 100 pm C. 1 to 100 `mum` D. 1 to 10 mm
Description : The colloidal system consisting of a liquid dispersed in a solid dispersion medium is termed as :
Last Answer : The colloidal system consisting of a liquid dispersed in a solid dispersion medium is termed as : A. aerosol B. foam C. emulsion D. gel
Description : Liquid-liquid colloidal system is known as
Last Answer : Liquid-liquid colloidal system is known as A. aerosol B. foam C. emulsion D. gel
Description : A colloidal solution can be purified by the following method :
Last Answer : A colloidal solution can be purified by the following method : A. dialysis B. peptization C. filtration D. oxidation
Description : What happens when a beam of light is passed through a colloidal sol?
Last Answer : What happens when a beam of light is passed through a colloidal sol?
Description : Identify dispersed phase and dispersion medium in the following colloidal dispersions : a. milk b. blood c. printing ink
Last Answer : Identify dispersed phase and dispersion medium in the following colloidal dispersions : a. milk b. blood c. printing ink d. fog
Description : The size of colloidal particles lies between :
Last Answer : The size of colloidal particles lies between : a. 10-10m and 10-9m b. 10-9m and 10-6m c. 10-6m and 10-4m d. 10-5m and 10-2m
Description : Do you have colloidal Silver?
Last Answer : colloidal silver Do you have Colloidal Silver
Description : What is one property of skim milk indicating that it is a colloidal dispersion?
Last Answer : its dairy
Description : Is it true that colloidal copper will not only kill the COVID-19 Coronavirus but all the mutations of it?
Last Answer : Colloidal copper is very effective against most bacteria and viruses.Plus- studies show it has other health benefits.It is logical to ... :researchgate.net/publication/341600132_As_Penicillin_is_a_cure_for_bacterial_infection_so_Copper_is_a_cure_for_viral_infectionsDOI: 10.13140/RG.2.2.21924.22400
Description : Coenzymes are (A) Heat stable, dialyzable, non protein organic molecules (B) Soluble, colloidal, protein molecules (C) Structural analogue of enzymes (D) Different forms of enzymes
Last Answer : Answer : A
Description : Most of calcium is present in bone, but 2% present in soft tissue and the blood is called (A) Calcinated blood (B) Solidified blood (C) Physiological blood(D) Colloidal blood
Last Answer : Answer : C
Description : Fog is a colloidal solution of (a) liquid in gas (b) solid in gas (c) gas in solid (d) gas in liquid
Last Answer : Ans:(a)
Description : The medicines are most effective, if they are administered in the (a) colloidal state (b) solid state (c) solution state (d) gaseous state
Description : (4) Water drops in a dispersion medium of air Explanation: A colloid is a substance microscopically dispersed evenly throughout another substance. A colloidal system consists of two separate phases: a dispersed ... or gas. Cloud is a colloidal dispersion of Water drops in a dispersion medium of air.
Last Answer : Conduction band electrons have more mobility than holes because they – (1) are lighter (2) experience collision less frequently (3) have negative charge (4) need less energy to move them
Description : (2) Fat is dispersed in water Explanation: A colloid is a substance microscopically dispersed evenly throughout another substance. A colloidal system consists of two separate phases: a dispersed ... Milk is an emulsified colloid of liquid butterfat globules dispersed within a water-based solution.
Last Answer : The presence of ozone in the stratosphere is responsible for – (1) increasing the average global temperature in recent years (2) higher rate of photosynthesis (3) checking the penetration of ultra-violet rays to the earth (4) supplying oxygen for people travelling in jets
Description : A colloidal system in which a liquid is dispersed in a liquid is called – (1) gel (2) emulsion (3) sol (4) precipitate
Last Answer : (2) emulsion Explanation: An emulsion is a mixture of two or more liquids that are normally immiscible (nonmixable or unblendable). Emulsions are part of a more general class of two-phase ... ). Examples of emulsions include vinaigrettes, milk, mayonnaise, and some cutting fluids for metal working.
Description : An emulsion is a colloidal solution of - (1) Liquid in liquid (2) Solid in liquid (3) Gas in solid (4) Solid in Solid
Last Answer : (1) Liquid in liquid Explanation: An emulsion is a mixture of two or more liquids that are normally immiscible (unmixable or unblendable). Emulsions are part of a more general class ... of emulsions include vinaigrettes, homogenized milk, mayonnaise, and some cutting fluids for metal working.
Description : Light scattering takes place in – (1) Colloidal solutions (2) Acidic solutions (3) Electrolyte solutions (4) Basic solutions
Last Answer : (1) Colloidal solutions Explanation: Light scattering in colloidal solutions or particles in suspension is known as Tyndall Effect. It is similar to Rayleigh scattering, in that the intensity of the ... fourth power of the frequency, so blue light is scattered much more strongly than red light.
Description : An alloy is an example of : (1) Colloidal solution (2) Emulsion (3) Solid solution (4) Heterogeneous mixture
Last Answer : (3) Solid solution Explanation: A Solid solution is a uniform mixture of substances in solid form.
Description : When a strong beam of light is passed through a colloidal solution, the light will – (1) be scattered (2) pass unchanged (3) be absorbed (4) be reflected
Last Answer : (1) be scattered Explanation: When a strong beam of light is passed through a colloidal solution, the light will be scattered.
Description : Which colloidal solution is commonly used as germ killer?
Last Answer : Colloidal sulphur
Description : Which colloidal solution is used in photography?
Last Answer : Colloidal silver bromite