Name the process to separate the particles of colloid. -Science

Name the process to separate the particles of colloid. -Science
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Answer :

Particles of a colloidal solution can be separated by centrifugation. The process employs the principle that particles that are dense settle at the bottom whereas the lighter particles stay at the top when spun rapidly.
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(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 phase (or internal phase) and a continuous phase (or dispersion medium) in which the colloid is dispersed. A colloidal system may be solid, liquid, or gas. Cloud is a colloidal dispersion of Water drops in a dispersion medium of air.

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

(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 phase (or internal phase) and a continuous phase (or dispersion medium) in which the colloid is dispersed. A colloidal system may be solid, liquid, or gas. Milk is an emulsified colloid of liquid butterfat globules dispersed within a water-based solution.

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

(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 phase (or internal phase) and a continuous phase (or dispersion medium) in which the colloid is dispersed. A colloidal system may be solid, liquid, or gas. Milk is an emulsified colloid of liquid butterfat globules dispersed within a water-based solution.

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

Colloid which contains particles of liquid or solid dispersed in gas?

Description : Colloid which contains particles of liquid or solid dispersed in gas?

Last Answer : Aerosol

A colloid formed between gas particles and liquid or solid particles?

Description : A colloid formed between gas particles and liquid or solid particles?

Last Answer : Foam

What is A mixture that is a solution but does not separate because the particles in he mixture are so small is a what?

Description : What is A mixture that is a solution but does not separate because the particles in he mixture are so small is a what?

Last Answer : Feel Free to Answer

What are Two ways to separate particles in a suspension?

Description : What are Two ways to separate particles in a suspension?

Last Answer : Feel Free to Answer

Trommels separate a mixture of particles depending on their (A) Size (B) Density (C) Wettability (D) Electrical & magnetic properties

Description : Trommels separate a mixture of particles depending on their (A) Size (B) Density (C) Wettability (D) Electrical & magnetic properties

Last Answer : (A) Size

When is a HEPA filter used? a. To Filter Bacteria Out Of A Vaccine b. To Trap Particles In The Air c. To Protect Burn Victims d. To Separate Bacteria And Viruses

Description : When is a HEPA filter used? a. To Filter Bacteria Out Of A Vaccine b. To Trap Particles In The Air c. To Protect Burn Victims d. To Separate Bacteria And Viruses

Last Answer : b. To Trap Particles In The Air

Is suspension and colloid mixture the same ?

Description : Is suspension and colloid mixture the same ?

Last Answer : The particle size in a suspension mixture is such that over time the particles in the mixture (if fixed) fall into a sediment called sedimentation . But in colloidal mixtures , colloidal particles ... / gas state of the mixture . So suspension and colloid are actually two different combinations.

Osmotic pressure is maintained by blood colloid

Description : Osmotic pressure is maintained by blood colloid

Last Answer : Osmotic pressure is maintained by blood colloid A. Albumin B. Globulin C. Fibrinogen D. Thrombin

Surfacetant molecules can cluster together as micelles, which are colloid sized cluster of molecules. Micelles from only above critical micelle concen

Description : Surfacetant molecules can cluster together as micelles, which are colloid sized cluster of molecules. Micelles from only above critical micelle concen

Last Answer : Surfacetant molecules can cluster together as micelles, which are colloid sized cluster of molecules. ... . `DeltaS` of micelle formation is negative

Effective electrolyte to cause the flocculation of a negatively charged arsenium sulphide colloid is :

Description : Effective electrolyte to cause the flocculation of a negatively charged arsenium sulphide colloid is :

Last Answer : Effective electrolyte to cause the flocculation of a negatively charged arsenium sulphide colloid is : A. `NaCl` B. ` ... 3)Fe(CN)_(6)` D. `AlCl_(3)`

Tyndal effect in a colloid is due to

Description : Tyndal effect in a colloid is due to

Last Answer : Tyndal effect in a colloid is due to A. interference of light B. defraction of light C. reflection of light D. scattering of light.

Which of the following is/are not true for lyophilic colloid ?

Description : Which of the following is/are not true for lyophilic colloid ?

Last Answer : Which of the following is/are not true for lyophilic colloid ? A. These are prepared ... electrolyte is sufficient to cause precipitation of these.

Is soup colloid or solution?

Description : Is soup colloid or solution?

Last Answer : Need answer

Is pond water colloid or suspension?

Description : Is pond water colloid or suspension?

Last Answer : Colloid

Is yogurt colloid?

Description : Is yogurt colloid?

Last Answer : It is very debatable. I mean, if you take like, say, a chunk ofhard like yogurt, then it is for sure a colloid. But if you justhave plain old yogurt, It's kinda in between, but leans a littlemore towards the liquid side.

Is vegetable soup a suspension colloid or solution?

Description : Is vegetable soup a suspension colloid or solution?

Last Answer : Feel Free to Answer

Is apple juice a colloid suspension or a solution?

Description : Is apple juice a colloid suspension or a solution?

Last Answer : Filtered apple juice is a solution.

Is apple juice a colloid compound or mixture?

Description : Is apple juice a colloid compound or mixture?

Last Answer : Need answer

Is yogurt colloid?

Description : Is yogurt colloid?

Last Answer : It is very debatable. I mean, if you take like, say, a chunk ofhard like yogurt, then it is for sure a colloid. But if you justhave plain old yogurt, It's kinda in between, but leans a littlemore towards the liquid side.

What Mixture can be classified as a solution suspension or colloid based on?

Description : What Mixture can be classified as a solution suspension or colloid based on?

Last Answer : Colloids are classified frequently as solutions because theparticles have very small dimensions.

Is homogenized milk a suspension or a colloid?

Description : Is homogenized milk a suspension or a colloid?

Last Answer : Milk is a type of colloid called emulsion.

Colloid osmotic pressure of intracellular fluid is (A) Equal to that of plasma (B) More than that of plasma (C) More than that of plasma (D) Nearly zero WATER AND ELECTROLYTE BALANCE 285

Description : Colloid osmotic pressure of intracellular fluid is (A) Equal to that of plasma (B) More than that of plasma (C) More than that of plasma (D) Nearly zero WATER AND ELECTROLYTE BALANCE 285

Last Answer : Answer : B

Contribution of albumin to colloid osmotic pressure of plasma is about (A) 10% (B) 50% (C) 80% (D) 90%

Description : Contribution of albumin to colloid osmotic pressure of plasma is about (A) 10% (B) 50% (C) 80% (D) 90%

Last Answer : Answer : C

All of the following statements about hemorrhagic shock are true except: A. Following hemorrhagic shock, there is an initial interstitial fluid volume contraction. B. Dopamine, or a similar inotropic agent, should be given immediately for resuscitation from hemorrhagic shock, to increase cardiac output and improve oxygen delivery to hypoperfused tissues. C. The use of colloid solutions or hypertonic saline solutions is contraindicated for treatment of hemorrhagic shock. D. In hemorrhagic shock, a narrowed pulse pressure is commonly seen before a fall in systolic blood pressure.

Description : All of the following statements about hemorrhagic shock are true except: A. Following hemorrhagic shock, there is an initial interstitial fluid volume contraction. B. Dopamine, or a similar inotropic ... shock, a narrowed pulse pressure is commonly seen before a fall in systolic blood pressure.

Last Answer : Answer: BC DISCUSSION: Hemorrhagic shock is associated with a contraction of the interstitial fluid compartment because of precapillary vasoconstriction and reabsorption of interstitial fluid ... definitive evidence that such solutions are better than standard crystalloid solutions is lacking

(2) stabilise the colloid and prevent crystallisation Explanation: Gelatine, being a colloid, has the property of preventing crystallization. In ice lollies and icecream this is demonstrated by the formation of a very fine crystal structure on freezing. This goes much further in that gelatine stabilized icecream does not become grainy or sandy due to the slow crystallisation of lactose with time.

Description : (2) stabilise the colloid and prevent crystallisation Explanation: Gelatine, being a colloid, has the property of preventing crystallization. In ice lollies and icecream this is demonstrated by the formation ... does not become grainy or sandy due to the slow crystallisation of lactose with time.

Last Answer : Glycol is added to aviation gasoline because it - (1) reduces evaporation of petrol (2) increases efficiency of petrol (3) prevents freezing of petrol (4) reduces consumption of petrol

Which is a natural colloid? (1) Sodium chloride (2) Urea (3) Cane-sugar (4) Blood

Description : Which is a natural colloid? (1) Sodium chloride (2) Urea (3) Cane-sugar (4) Blood

Last Answer : (4) Blood Explanation: Examples of natural colloids can be found in our body itself: blood consists of colloidal sized red blood corpuscles (RBC) which provide the vital oxygen to all the body tissues.

An emulsion is a colloid of a – (1) gas in a liquid (2) liquid in a liquid (3) liquid in a gas (4) gas in a solid

Description : An emulsion is a colloid of a – (1) gas in a liquid (2) liquid in a liquid (3) liquid in a gas (4) gas in a solid

Last Answer : (2) liquid in a liquid 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 ... ). Examples of emulsions include vinaigrettes, milk, mayonnaise, and some cutting fluids for metal working.

Which of the following is not an ultrafine grinder (colloid mill)?(A) Micronizers (B) Agitated mills and fluid energy mills (C) Toothed roll crusher (D) Hammer mills with internal classification

Description : Which of the following is not an ultrafine grinder (colloid mill)? (A) Micronizers (B) Agitated mills and fluid energy mills (C) Toothed roll crusher (D) Hammer mills with internal classification

Last Answer : (C) Toothed roll crusher

Colloid mills achieve size reduction mainly by (A) Impact (B) Attrition (C) Cutting (D) Compression

Description : Colloid mills achieve size reduction mainly by (A) Impact (B) Attrition (C) Cutting (D) Compression

Last Answer : (B) Attrition

Comment on the statement that “ colloid is not a substance but state of a substance” .

Description : Comment on the statement that “ colloid is not a substance but state of a substance” .

Last Answer : Ans. A substance shows different physical properties in different medium. It may exist as colloid or crystalloids under certain conditions. Eg. NaCl in water behaves like crystalloid while in benzene behaves like colloid ... the particles lies in the range 1 to 1000 no., it is in colloidal state. 

Which of the following colloids is expensive but rapidly expands plasma volume? a) Albumin Albumin is a colloid that requires human donors, is limited in supply, and can cause congestive heart failure. b) Dextran Dextran is a colloid, synthetic plasma expander that interferes with platelet aggregation and is not recommended for hemorrhagic shock. c) Lactated Ringers Lactated ringers is a crystalloid, not a colloid. d) Hypertonic Saline Hypertonic saline is a crystalloid, not a colloid.

Description : Which of the following colloids is expensive but rapidly expands plasma volume? a) Albumin Albumin is a colloid that requires human donors, is limited in supply, and can cause congestive heart failure ... , not a colloid. d) Hypertonic Saline Hypertonic saline is a crystalloid, not a colloid.

Last Answer : a) Albumin Albumin is a colloid that requires human donors, is limited in supply, and can cause congestive heart failure.

Which of the following terms has as its definition: a mixture having continuous and dispersed phases? w) colloid x) solute y) suspension z) solvent

Description : Which of the following terms has as its definition: a mixture having continuous and dispersed phases? w) colloid x) solute y) suspension z) solvent

Last Answer : ANSWER: W -- COLLOID

Which is a natural colloid ? (1) Sodium chloride (2) Urea (3) Cane-sugar (4) Blood

Description : Which is a natural colloid ? (1) Sodium chloride (2) Urea (3) Cane-sugar (4) Blood 

Last Answer : Blood

Gelatin is mostly used in making ice–creams in order to (1) prevent making a colloid (2) stabilise the colloid and prevent crystallisation (3) stabilise mixture (4) enrich the aroma

Description : Gelatin is mostly used in making ice–creams in order to (1) prevent making a colloid (2) stabilise the colloid and prevent crystallisation (3) stabilise mixture (4) enrich the aroma

Last Answer :  stabilise the colloid and prevent crystallisation

An emulsion is a colloid of a (1) gas in a liquid (2) liquid in a liquid (3) liquid in a gas (4) gas in a solid

Description : An emulsion is a colloid of a (1) gas in a liquid (2) liquid in a liquid (3) liquid in a gas (4) gas in a solid

Last Answer : liquid in a liquid

A substance which readily forms colloidal solution in contact with water is called (1) Extrinsic colloid (2) Associated colloid (3) Hydrophobic colloid (4) Hydrophilic colloid

Description : A substance which readily forms colloidal solution in contact with water is called (1) Extrinsic colloid (2) Associated colloid (3) Hydrophobic colloid (4) Hydrophilic colloid 

Last Answer : Hydrophilic colloid

Which method in home is used to separate wheat bran from flour? -Science

Description : Which method in home is used to separate wheat bran from flour? -Science

Last Answer : answer:

How would you separate sugar that has been mixed with wheat flour? -Science

Description : How would you separate sugar that has been mixed with wheat flour? -Science

Last Answer : Sugar can be separated from wheat flour by sieving. Sugar particles being larger in size are retained by the sieve whereas wheat flour will pass through it.

Why do we need to separate the components of a mixture? -Science

Description : Why do we need to separate the components of a mixture? -Science

Last Answer : Solution: We need to separate different components of a mixture to separate the useful components from the non-useful or some harmful components. ... So we need to separate different components of a mixture to separate the useful components from the nonuseful for some harmful components.

A mixture of salt, sand and water is given, which of these sequence can be used to separate salt -Science

Description : A mixture of salt, sand and water is given, which of these sequence can be used to separate salt -Science

Last Answer : Filtration -> Evaporation -> Condensation

Filtration is a method to separate the components of a -Science

Description : Filtration is a method to separate the components of a -Science

Last Answer : mixture of a liquid and an insoluble substance

Which method is used to separate pebbles and stones from sand? -Science

Description : Which method is used to separate pebbles and stones from sand? -Science

Last Answer : Sieving is a process by which fine particles are separated from bigger particles by using a sieve. It is used in flour mill or at construction sites. In flour mill, impurities like husks and stones are removed from wheat. Pebbles and stones are removed from sand by sieving.

Which of the following method is used to separate a mixture of salt and camphor? -Science

Description : Which of the following method is used to separate a mixture of salt and camphor? -Science

Last Answer : Sublimation is a technique used to separate the components of a mixture containing a sublimable volatile solid and a non-sublimable impurity. Therefore, the mixture of camphor and sodium chloride can be separated by the process of sublimation.

In the Gold foil experiment of Geiger and Marsden, that paved the way for Rutherford’s model of an atom, ~ 1.00% of the α-particles were found to deflect at angles > 50º. If one mole of α- -Science

Description : In the Gold foil experiment of Geiger and Marsden, that paved the way for Rutherford’s model of an atom, ~ 1.00% of the α-particles were found to deflect at angles > 50º. If one mole of α- -Science

Last Answer : Total number of α particles used for bombardment = 1 mole 1 mole=6.022×1023 particles number of α particles deflected at angles greater than 50°(>50°)= 1% Number of α particles ... at angles less than 50°= 99/100 × 6.022 × 1023 =5.96 × 1023

Which is not true with respect to cathode rays ? [1] (a) A stream of electrons. (b) Charged particles (c) Move with same speed as that of light. (d) Can be defl ected by magnetic fi eld -Science

Description : Which is not true with respect to cathode rays ? [1] (a) A stream of electrons. (b) Charged particles (c) Move with same speed as that of light. (d) Can be defl ected by magnetic fi eld -Science

Last Answer : Move with speed as that of light is not true with respect to cathode rays.

If the amount of large and fine particles is about the same in soil the the soil is called ___________ -Science

Description : If the amount of large and fine particles is about the same in soil the the soil is called ___________ -Science

Last Answer : If the amount of large and fine particles is about the same in soil the the soil is called loamy

The mixture of rock particles and humus is called _______. -Science

Description : The mixture of rock particles and humus is called _______. -Science

Last Answer : The mixture of rock particles and humus is called Soil.