Aerosol is a system of colloidal particles having a size of

Aerosol is a system of colloidal particles having a size of
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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`
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An aerosol is a colloidal system of a?

Description : An aerosol is a colloidal system of a?

Last Answer : solid dispersed in gas

Assertion :- Filtration of colloidal particles is not possible by filter paper. Reason :- Size of colloidal particle is less than filter paper pores.

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.

size of colloidal particles may range from:

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

The size of colloidal particles lies between :

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

‘Aerosol’ is - (1) Suspended solid particles in air (2) Pollutant gas, present in air (3) (8) Microbes, present in air (4) Green house gas present in air

Description : ‘Aerosol’ is - (1) Suspended solid particles in air (2) Pollutant gas, present in air (3) (8) Microbes, present in air (4) Green house gas present in air

Last Answer : (1) Suspended solid particles in air

Fine organic or inorganic particles suspended in air is called --------? A. particulate pollutant B. gaseous pollutant C. aerosol (Answer) D. none of these

Description : Fine organic or inorganic particles suspended in air is called --------? A. particulate pollutant B. gaseous pollutant C. aerosol (Answer) D. none of these

Last Answer : C. aerosol (Answer)

‘Aerosol’ is (1) Suspended solid particles in air (2) Pollutant gas, present in air (3) Microbes, present in air (4) Green house gas present in air

Description : ‘Aerosol’ is (1) Suspended solid particles in air (2) Pollutant gas, present in air (3) Microbes, present in air (4) Green house gas present in air

Last Answer : Suspended solid particles in air

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

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.

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

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.

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

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.

Who called larger colloidal particles of primitives sea as coacervates :

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

Choose the correct reason(s) for the stability of the lyophobic colloidal particles.

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.

Which of the following represents macromolecular colloidal particles?

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

Ultra centrifuges are used for the separation of __________ solid particles. (A) Coarse (B) Fine (C) Colloidal (D) Dissolved

Description : Ultra centrifuges are used for the separation of __________ solid particles. (A) Coarse (B) Fine (C) Colloidal (D) Dissolved

Last Answer : (C) Colloidal

A sol is prepared by addition to excess AgNO3 solution in KI solution. What charge is likely to develop on the colloidal particles ?

Description : A sol is prepared by addition to excess AgNO3 solution in KI solution. What charge is likely to develop on the colloidal particles ?

Last Answer : Ans. Positive. 

If an electric field is applied to a colloidal sol, the dispersed phase particles are found to move towards the electrode of opposite charge. If however, the dispersed phase is made stationary, the dispersion medium is found to move in the opposite direction. What is the term used for such movement of dispersion medium ?

Description : If an electric field is applied to a colloidal sol, the dispersed phase particles are found to move towards the electrode of opposite charge. If however, the dispersed phase is made stationary, the ... move in the opposite direction. What is the term used for such movement of dispersion medium ?

Last Answer : Ans. Electro osmosis. 

Proteins can exist in the cell in the forms of a. Colloidal particles b. crystalloid c. Both d. none

Description : Proteins can exist in the cell in the forms of a. Colloidal particles b. crystalloid c. Both d. none

Last Answer : Colloidal particles

Suspended colloidal particles in water can be removed by the process of

Description : Suspended colloidal particles in water can be removed by the process of

Last Answer : Coagulation

What is the separation of colloidal particles from those of molecular dimensions called?

Description : What is the separation of colloidal particles from those of molecular dimensions called?

Last Answer : Dialysis

Suspended colloidal particles in the water can be removed by the process of?

Description : Suspended colloidal particles in the water can be removed by the process of?

Last Answer : Coagulation

The colloidal particles of organic materials formed in the primitive oceans are called a. Coacervates b. Protoplasm c. Cytoplasm d. Nucleic acid

Description : The colloidal particles of organic materials formed in the primitive oceans are called a. Coacervates b. Protoplasm c. Cytoplasm d. Nucleic acid

Last Answer : a. Coacervates

Which of the following refers to the scattering of light by colloidal particles? w) Rutherford effect x) Tyndall effect (pron: tin-dahl) y) Thompson effect z) none of these

Description : Which of the following refers to the scattering of light by colloidal particles? w) Rutherford effect x) Tyndall effect (pron: tin-dahl) y) Thompson effect z) none of these

Last Answer : ANSWER: X -- TYNDALL EFFECT

I live in an old house -- can I squirt aerosol insulation into area behind faceplate before I attach new faceplates?

Description : I live in an old house -- can I squirt aerosol insulation into area behind faceplate before I attach new faceplates?

Last Answer : You are better off installing pre-cut foam. The reason is that aerosol insulation tends to contract and pull away from the studs over time, allowing infiltration again.

Why does an aerosol can get really cold when it's used excessively?

Description : Why does an aerosol can get really cold when it's used excessively?

Last Answer : Expending the energy in the can (from spraying out the contents) reduces the temperature in the can. That is only temporary as the can reabsorbs heat from the air.

Define aerosol. -Chemistry 9th

Description : Define aerosol. -Chemistry 9th

Last Answer : An aerosol is a collection of solid particles or liquid droplets dispersed in air. Examples include smoke, fog, sea spray and pollution particles from vehicles.

What is aerosol used for ?

Description : What is aerosol used for ?

Last Answer : Aerosol is used to repel mosquitoes.

What is aerosol ?

Last Answer : Plants that take the help of air for their pollination i.e. the main medium wind (may be other means but less) are called wind pollinated plants.

Major aerosol pollutant present in jet plane emission is :

Description : Major aerosol pollutant present in jet plane emission is :

Last Answer : Major aerosol pollutant present in jet plane emission is : A. sulphur dioxide B. carbon monooxide C. methane D. fluorocabon.

Aerosol is suspension of

Description : Aerosol is suspension of

Last Answer : Aerosol is suspension of A. Liquid drops in air B. Solid particles in air C. Liquid or solid particles ... or solid particles of more than `1.0 mu`m

Major aerosol pollutant in jet plane emission is

Description : Major aerosol pollutant in jet plane emission is

Last Answer : Major aerosol pollutant in jet plane emission is A. `SO_(2)` B. CFC C. CO D. `C"C"l_(4)`

Aerosol is suspension of

Description : Aerosol is suspension of

Last Answer : Aerosol is suspension of A. Liquid or solid particles of more than 1 mm B. Liquid drops in air C. ... of less than 1 mm D. Solid particles in air

Why are CFCs banned as refrigerator coolants but are still allowed in aerosol cans?

Description : Why are CFCs banned as refrigerator coolants but are still allowed in aerosol cans?

Last Answer : Chlorofluorocarbons (CFCs) were once used as propellants inaerosol cans, but since the Montreal Protocol was agreed to in1989, they have been replaced in nearly every country. This isbecause ... hydrocarbons,typically propane, n-butane and isobutane.Food sprays use nitrous oxide and carbon dioxide.

Which aerosol deplete ozone layer ?

Description : Which aerosol deplete ozone layer ?

Last Answer : Ans C.F.C  

What is common to aquasol and aerosol ? In what respect do they differ ?

Description : What is common to aquasol and aerosol ? In what respect do they differ ?

Last Answer : Both are colloids. In aquasol, water acts as dispersion medium. In aerosol, air acts as dispersion medium.

Major aerosol pollutant in jet plane emission is (a) sulphur dioxide (b) carbon monoxide (c) methane (d) fluorocarbon.

Description : Major aerosol pollutant in jet plane emission is (a) sulphur dioxide (b) carbon monoxide (c) methane (d) fluorocarbon. 

Last Answer : (d) fluorocarbon.

Fowl cholera is spread by A. aerosol meansB. vertical spreadC. Carrier birdsD. None of the these

Description : Fowl cholera is spread by A. aerosol means B. vertical spread C. Carrier birds D. None of the these

Last Answer : vertical spread

Major aerosol pollutant in jet plane emission is (a) sulphur dioxide (b) carbon monoxide (c) methane (d) fluorocarbon

Description : Major aerosol pollutant in jet plane emission is (a) sulphur dioxide (b) carbon monoxide (c) methane (d) fluorocarbon

Last Answer : (d) fluorocarbon.

Which of the following is a secondary pollutant? (a) PAN (b) Aerosol (c) CO (d) CO2

Description : Which of the following is a secondary pollutant? (a) PAN (b) Aerosol (c) CO (d) CO2

Last Answer : (a) PAN

What is aerosol?

Description : What is aerosol?

Last Answer : “Sol” is a mixture of suspended solid or liquid particles in a gas or air. The product using “sol” systems are called aerosols.

Mixture of liquid and steam of the same substance in which both are at saturation temperature.  a. dry steam  b. current steam  c. wet steam  d. aerosol

Description : Mixture of liquid and steam of the same substance in which both are at saturation temperature.  a. dry steam  b. current steam  c. wet steam  d. aerosol

Last Answer : wet steam

If Earth had no greenhouse gases, the planet would be ? (a) Too hot to support life. (b) Cooler but still able to support life. (c) Too cold to support life. EDIT: COMPLEX LIFE (d) It depends on the species of aerosol in the GHG-free atmosphere

Description : If Earth had no greenhouse gases, the planet would be ? (a) Too hot to support life. (b) Cooler but still able to support life. (c) Too cold to support life. EDIT: COMPLEX LIFE (d) It depends on the species of aerosol in the GHG-free atmosphere

Last Answer : Too cold to support life. EDIT: COMPLEX LIFE

Draw a well labelled diagram of aerosol container and give its advantages and disadvantages.

Description : Draw a well labelled diagram of aerosol container and give its advantages and disadvantages.

Last Answer : Diagram of aerosol container Advantages:   1. Medicament can be delivered directly to affected areas. 2. Absence of air prevents oxidation. 3. Hydrolysis of medicament prevented ... on injured skin. 4. Difficulties occurred during formulation when drug not soluble in propellants.

Draw a well labelled diagram of aerosol container and state method of aerosol packaging.

Description : Draw a well labelled diagram of aerosol container and state method of aerosol packaging. 

Last Answer : Diagram of aerosol container : Depending on the nature of the product concentrate the aerosol can be filed by cold filling or pressure filling process  1) Cold-filling fill process:- ... air present in the container must be expelled before filing the contents in to the aerosol container.

Define aerosol. Classify aerosol. Give formula of aerosol with example.

Description : Define aerosol. Classify aerosol. Give formula of aerosol with example. 

Last Answer : Definition: Aerosol   Aerosols may be defined as disperse phase system in which very fine solid particles or liquid droplet get dispersed in the gases which act as continuous phase. These are ... in the formulation. 7) The propellant, medicament, additives are filled into an aerosol container.

Define container and closure. Draw a well labelled diagram of Aerosol container.

Description : Define container and closure. Draw a well labelled diagram of Aerosol container. 

Last Answer : Definition: Container is a device that holds the drug and it may or may not be in direct contact with the pharmaceutical preparations. Closure is the device by means of which container can be opened and closed. Diagram of aerosol container:

Describe aerosol container with labelled diagram

Description : Describe aerosol container with labelled diagram

Last Answer : PARTS OF AEROSOL PACKAGING: 1. Container: In pharmaceutical aerosol packaging, the containers are made from metal (tin-plated steel, aluminium and stainless steel), glass and plastic. These containers ... the propellant to come out without dispensing content of package. Aerosol container:

Major aerosol pollutant in Jet Plane emission is a) SO2 b) CO c) CH4 d) CFC.

Description : Major aerosol pollutant in Jet Plane emission is a) SO2 b) CO c) CH4 d) CFC.

Last Answer : d) CFC.

Two particles are called to be equal settling, if they are having the same. (A) Size (B) Specific gravity (C) Terminal velocities in the same fluid & in the same field of force (D) None of these

Description : Two particles are called to be equal settling, if they are having the same. (A) Size (B) Specific gravity (C) Terminal velocities in the same fluid & in the same field of force (D) None of these

Last Answer : (C) Terminal velocities in the same fluid & in the same field of force

Carbonaceous particles having size less than 1 μm are called (A) Grit (B) Aggregates (C) Aerosols (D) Smoke

Description : Carbonaceous particles having size less than 1 μm are called (A) Grit (B) Aggregates (C) Aerosols (D) Smoke

Last Answer : (D) Smoke

Pick up the correct statement from the following: (A) The maximum size of a coarse aggregate, is 75 mm and minimum 4.75 mm (B) The maximum size of the fine aggregate, is 4.75 mm and minimum 0.075 mm (C) The material having particles of size varying from 0.06 mm to 0.002 mm, is known as silt (D) All the ab

Description : Pick up the correct statement from the following: (A) The maximum size of a coarse aggregate, is 75 mm and minimum 4.75 mm (B) The maximum size of the fine aggregate, is 4.75 mm and minimum 0.075 mm ( ... having particles of size varying from 0.06 mm to 0.002 mm, is known as silt (D) All the ab

Last Answer : Answer: Option D