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

Choose the correct reason(s) for the stability of the lyophobic colloidal particles.
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Choose the correct reason(s) for the stability of the lyophobic colloidal particles. A. ... layer of opposite charges around the colloidal particles.
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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.

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.

Assertion :- Lyophilic sol is more stable than lyophobic sol. Reason :- Lyophilic sol have greater solvation energy then lyophobic sol.

Description : Assertion :- Lyophilic sol is more stable than lyophobic sol. Reason :- Lyophilic sol have greater solvation energy then lyophobic sol.

Last Answer : Assertion :- Lyophilic sol is more stable than lyophobic sol. Reason :- Lyophilic sol have greater ... D. If both Assertion & Reason are False.

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

Aerosol is a system of colloidal particles having a size of

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`

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

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

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

Choose the correct statement about colloidal bismuth subcitrate: A. It causes prolonged neutralization of gastric acid B. It has anti-H.pylori activity C. It relieves peptic ulcer pain promptly D. All of the above are correct

Description : Choose the correct statement about colloidal bismuth subcitrate: A. It causes prolonged neutralization of gastric acid B. It has anti-H.pylori activity C. It relieves peptic ulcer pain promptly D. All of the above are correct

Last Answer : B. It has anti-H.pylori activity

Choose the correct statement about osmotic diuretics: A. They are large molecular weight substances which form colloidal solution B. Their primary site of action is collecting ducts in the kidney C. They increase water excretion without increasing salt excretion D. They can lower intraocular pressure

Description : Choose the correct statement about osmotic diuretics: A. They are large molecular weight substances which form colloidal solution B. Their primary site of action is collecting ducts in the ... C. They increase water excretion without increasing salt excretion D. They can lower intraocular pressure

Last Answer : D. They can lower intraocular pressure

Give the conect order of initials T(true) or F(false) for following statements [3] I : Lyophobic sols are irreversible sols. II : Micelles fonnation t

Description : Give the conect order of initials T(true) or F(false) for following statements [3] I : Lyophobic sols are irreversible sols. II : Micelles fonnation t

Last Answer : Give the conect order of initials T(true) or F(false) for following statements [3] I : Lyophobic sols are irreversible ... F C. T T T T D. T T F T

Comprehension # 1 Many lyophilic sols and few lyophobic sols when coagulated under some special conditions changes into semi rigid mass, enclosing who

Description : Comprehension # 1 Many lyophilic sols and few lyophobic sols when coagulated under some special conditions changes into semi rigid mass, enclosing who

Last Answer : Comprehension # 1 Many lyophilic sols and few lyophobic sols when coagulated under some special ... . thixotropy C. double decompostion D. peptization

Comprehension # 1 Many lyophilic sols and few lyophobic sols when coagulated under some special conditions changes into semi rigid mass, enclosing who

Description : Comprehension # 1 Many lyophilic sols and few lyophobic sols when coagulated under some special conditions changes into semi rigid mass, enclosing who

Last Answer : Comprehension # 1 Many lyophilic sols and few lyophobic sols when coagulated under some special ... B. synersis C. coagulation D. thixotropy

Comprehension # 1 Many lyophilic sols and few lyophobic sols when coagulated under some special conditions changes into semi rigid mass, enclosing who

Description : Comprehension # 1 Many lyophilic sols and few lyophobic sols when coagulated under some special conditions changes into semi rigid mass, enclosing who

Last Answer : Comprehension # 1 Many lyophilic sols and few lyophobic sols when coagulated under some special conditions ... Calcium acetate C. Hair gel D. Cheese

Distinguish between Lyophobic and Lyophilic sols.

Description : Distinguish between Lyophobic and Lyophilic sols.

Last Answer : Distinguish between Lyophobic and Lyophilic sols.

Lyophobic Colloids

Description : Lyophobic Colloids

Last Answer : Lyophobic Colloids :- Those colloids which are solvent hating. It is irreversible Sols.

Carbon particles accumulated on the catalyst used in the gas oil cracking lies in the category of __________ poison. (A) Deposited (B) Chemisorbed (C) Selectivity (D) Stability

Description : Carbon particles accumulated on the catalyst used in the gas oil cracking lies in the category of __________ poison. (A) Deposited (B) Chemisorbed (C) Selectivity (D) Stability

Last Answer : (A) Deposited

Choose the antiulcer drug that inhibits gastric acid secretion, stimulates gastric mucus and bicarbonate secretion and has cytoprotective action on gastric mucosa: A. Misoprostol B. Sucralfate C. Carbenoxolone sodium D. Colloidal bismuth subcitrate

Description : Choose the antiulcer drug that inhibits gastric acid secretion, stimulates gastric mucus and bicarbonate secretion and has cytoprotective action on gastric mucosa: A. Misoprostol B. Sucralfate C. Carbenoxolone sodium D. Colloidal bismuth subcitrate

Last Answer : A. Misoprostol

Assertion :- A gas mixed with another gas forms a colloidal solution. Reason :- Mixture of gases is homogenous system.

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.

Choose the wrong statement (A) The center of buoyancy is located at the center of gravity of the displaced liquid (B) For stability of a submerged body, the center of gravity of body must lie directly below the center of buoyancy (C) If C.G. and center of buoyancy coincide, the submerged body must lie at neutral equilibrium for all positions (D) All floating bodies are stable

Description : Choose the wrong statement (A) The center of buoyancy is located at the center of gravity of the displaced liquid (B) For stability of a submerged body, the center of gravity of body must ... the submerged body must lie at neutral equilibrium for all positions (D) All floating bodies are stable

Last Answer : Answer: Option D

Asseration: The thermal stability of hydrides of oxygen family decrease with molecular weight. Reason: The decomposition of `M-H` bond requires lesser

Description : Asseration: The thermal stability of hydrides of oxygen family decrease with molecular weight. Reason: The decomposition of `M-H` bond requires lesser

Last Answer : Asseration: The thermal stability of hydrides of oxygen family decrease with molecular weight. Reason: The decomposition ... in `O-H` than `S-H`.

Give reason for the following observation (L-III) (a)- The tendency for catenation decreases down the group in group 14 (b)- The decreasing stability of+3 oxidation state with increasing atomic no. in group 13. (c)- Molten aluminum bromide is a poor conductor of electricity.

Description : Give reason for the following observation (L-III) (a)- The tendency for catenation decreases down the group in group 14 (b)- The decreasing stability of+3 oxidation state with increasing atomic no. in group 13. (c)- Molten aluminum bromide is a poor conductor of electricity.

Last Answer : Ans. -(a) it is due to decrease in bond dissociation energy which is due to increase in atomic size C-C > Si-Si >Ge-Ge>Sn-Sn>Pb-Pb. (b)- It is due to inert pair effect. (c)- Molten AlBr3 is poor conductor of electricity because it is covalent compound.

What is the reason for the increasing stability of peroxide & superoxide of alkali metals down the group?

Description : What is the reason for the increasing stability of peroxide & superoxide of alkali metals down the group? 

Last Answer : On combustion in excess of air, lithium forms mainly the oxide, Li2O (plus some peroxide Li2O2), sodium forms the peroxide, Na2O2 (and some superoxide NaO2) whilst potassium, rubidium and ... are also paramagnetic. Sodium peroxide is widely used as an oxidising agent in inorganic chemistry.  

The immunoglobulins are differentiated and also named on the basis of (A) Electrophoretic mobility (B) Heat stability (C) Molecular weight (D) Sedimentaiton coefficient like 7 S, 19 S etc.

Description : The immunoglobulins are differentiated and also named on the basis of (A) Electrophoretic mobility (B) Heat stability (C) Molecular weight (D) Sedimentaiton coefficient like 7 S, 19 S etc.

Last Answer : Answer : D

Electrical insulation is classed by the _____________. A. International Association of Electrical Manufacturers B. approximate operating voltage and current expected C. U.S. Coast Guard D. temperature stability of the manufacturing material(s)

Description : Electrical insulation is classed by the _____________. A. International Association of Electrical Manufacturers B. approximate operating voltage and current expected C. U.S. Coast Guard D. temperature stability of the manufacturing material(s)

Last Answer : Answer: D

Define stability. Sketch the root locations in the s-plane for stable and unstable system.

Description : Define stability. Sketch the root locations in the s-plane for stable and unstable system.

Last Answer : Stability: The system is said to be stable if it produces bounded output for a bounded input. It is used to define usefulness of the system. The stability implies that the system performance should not ... absence of the input, output may not return to zero it shows certain output without input. 

Consider the following carbanions : Correct decreasing order of stability is :

Description : Consider the following carbanions : Correct decreasing order of stability is :

Last Answer : Consider the following carbanions : Correct decreasing order of stability is : A. `II gt III gt IV gt I` B. ` ... gt III` D. `I gt II gt III gt IV`

Arrange the following in correct order of their stability ? `(I) CH-=overset(Theta)C " "(II) CH_(2)=overset(Theta)CH " "(III) CH_(3)-overset(Theta)CH_

Description : Arrange the following in correct order of their stability ? `(I) CH-=overset(Theta)C " "(II) CH_(2)=overset(Theta)CH " "(III) CH_(3)-overset(Theta)CH_

Last Answer : Arrange the following in correct order of their stability ? `(I) CH-=overset(Theta)C " "(II) CH_(2)=overset( ... gt III gt I` D. `II gt I gt III`

Among the following number of correct statements are : (i) Stability of lyophilic colloids is mainly due to the strong interaction between dispersed p

Description : Among the following number of correct statements are : (i) Stability of lyophilic colloids is mainly due to the strong interaction between dispersed p

Last Answer : Among the following number of correct statements are : (i) Stability of lyophilic colloids is ... solution is lesser than that of dispersion medium.

Consider the following carbanions: Correct decreasing order of stability is :

Description : Consider the following carbanions: Correct decreasing order of stability is :

Last Answer : Consider the following carbanions: Correct decreasing order of stability is : A. II gt III gt I gt IV B. III ... II gt III D. I gt II gt III gt IV

Consider the following carbanions: Correct decreasing order of stability is :

Description : Consider the following carbanions: Correct decreasing order of stability is :

Last Answer : Consider the following carbanions: Correct decreasing order of stability is : A. II gt III gt I gt IV B. III ... II gt III D. I gt II gt III gt IV

The correct order of the thermal stability of hydrogen halides `(H-X)` is

Description : The correct order of the thermal stability of hydrogen halides `(H-X)` is

Last Answer : The correct order of the thermal stability of hydrogen halides `(H-X)` is A. (1) HI gt HBrgt HCI gt HF B. ... HBr lt HI D. (4)Hl gt HCI lt HF lt HBr

The correct stability order for the following speceis is :

Description : The correct stability order for the following speceis is :

Last Answer : The correct stability order for the following speceis is : A. II gt IV gt I gt III B. I gt II gt III gt ... I gt IV gt III D. I gt III gt II gt IV

What is the correct order of decreasing stability of the following cations ? `overset(oplus)underset(CH_(3)-CH-CH_(3)` II `overset(oplus)underset(CH_(

Description : What is the correct order of decreasing stability of the following cations ? `overset(oplus)underset(CH_(3)-CH-CH_(3)` II `overset(oplus)underset(CH_(

Last Answer : What is the correct order of decreasing stability of the following cations ? `overset(oplus)underset(CH_(3)-CH-CH_( ... gt I gt III D. II gt III gt I

Which of the following orders regarding relative stability of free radicals is correct?

Description : Which of the following orders regarding relative stability of free radicals is correct?

Last Answer : Which of the following orders regarding relative stability of free radicals is correct? A. `3^(@)lt2^(@)lt1^(@)` B. ... (@)` D. `3^(@)gt2^(@)lt1^(@)`

Which of the following is correct for stability of phenoxide ion?

Description : Which of the following is correct for stability of phenoxide ion?

Last Answer : Which of the following is correct for stability of phenoxide ion? A. Resonating structure of benzene ring ... in phenoxide ion D. All of the above

Which one is the correct order of decreasing stability of car banions?

Description : Which one is the correct order of decreasing stability of car banions?

Last Answer : Which one is the correct order of decreasing stability of car banions? A. `PgtSgtTgtC_(6)H_(5)CH_(2)` B. ` ... CH_(2)` D. `C_(6)H_(5)CH_(2)gtTgtSgtP`

The correct order of decreasing stability of hexafluorides of group 16 members is:

Description : The correct order of decreasing stability of hexafluorides of group 16 members is:

Last Answer : The correct order of decreasing stability of hexafluorides of group 16 members is: A. `TeF_(6) gt SeF_(6) gt SF_ ... D. `TeF_(6) gt SF_(6) gt SeF_(6)`

In the context of India, which one of the following is the correct relationship between Rights and Duties? (1) Rights are correlative with Duties. (2) Rights are personal and hence independent of society and Duties. (3) Rights, not Duties, are important for the advancement of the personality of the citizen. (4) Duties, not Rights, are important for the stability of the State.

Description : In the context of India, which one of the following is the correct relationship between Rights and Duties? (1) Rights are correlative with Duties. (2) Rights are personal and hence independent of society ... of the citizen. (4) Duties, not Rights, are important for the stability of the State.

Last Answer : (1) Rights are correlative with Duties. Explanation: Rights and duties are correlative and inseparable, hence A is the answer.