Colloids (a) Are true solutions (b) Are suspensions of one phase in another (c) Are two-phase systems (d) Contain only water soluble substances

Colloids (a) Are true solutions (b) Are suspensions of one phase in another (c) Are two-phase systems (d) Contain only water soluble substances
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Gels and Foams are classified as: w) solutions x) emulsions y) colloids z) suspensions

Description : Gels and Foams are classified as: w) solutions x) emulsions y) colloids z) suspensions

Last Answer : ANSWER: C -- COLLOIDS

Name the effect that is caused by scattering of light in colloids or suspensions.

Description : Name the effect that is caused by scattering of light in colloids or suspensions.

Last Answer : ANSWER: TYNDALL EFFECT

Ionic substances dissolve in water to form: w) highly acid solutions x) electrolytic solutions y) colloids z) emulsions

Description : Ionic substances dissolve in water to form: w) highly acid solutions x) electrolytic solutions y) colloids z) emulsions

Last Answer : ANSWER: X -- ELECTROLYTIC SOLUTIONS

Water soluble molecular aggregates of lipids are known as (A) Micelle (B) Colloids (C) Sphingol (D) Mucin

Description : Water soluble molecular aggregates of lipids are known as (A) Micelle (B) Colloids (C) Sphingol (D) Mucin

Last Answer : Answer : A

Multi leaf springs are not recommended for automobile and rail road suspensions. a) True b) False

Description : Multi leaf springs are not recommended for automobile and rail road suspensions. a) True b) False

Last Answer : b) False

Which of the following is not true of the blood-brain barrier: A. It is constituted by tight junctions between the endothelial cells of brain capillaries and the glial tissue B. It allows passage of lipid soluble drugs into the brain C. It limits entry of highly ionized drugs into the brain D. It regulates passage of substances from brain into blood

Description : Which of the following is not true of the blood-brain barrier: A. It is constituted by tight junctions between the endothelial cells of brain capillaries and the glial tissue B. It allows passage ... of highly ionized drugs into the brain D. It regulates passage of substances from brain into blood

Last Answer : D. It regulates passage of substances from brain into blood

Which of the following is not true of the blood-brain barrier: A. It is constituted by tight junctions between the endothelial cells of brain capillaries and the glial tissue B. It allows passage of lipid soluble drugs into the brain C. It limits entry of highly ionized drugs into the brain D. It regulates passage of substances from brain into blood

Description : Which of the following is not true of the blood-brain barrier: A. It is constituted by tight junctions between the endothelial cells of brain capillaries and the glial tissue B. It allows passage ... of highly ionized drugs into the brain D. It regulates passage of substances from brain into blood

Last Answer : D. It regulates passage of substances from brain into blood

Which of the following is not true of the blood-brain barrier: A. It is constituted by tight junctions between the endothelial cells of brain capillaries and the glial tissue B. It allows passage of lipid soluble drugs into the brain C. It limits entry of highly ionized drugs into the brain D. It regulates passage of substances from brain into blood

Description : Which of the following is not true of the blood-brain barrier: A. It is constituted by tight junctions between the endothelial cells of brain capillaries and the glial tissue B. It allows passage ... of highly ionized drugs into the brain D. It regulates passage of substances from brain into blood

Last Answer : D. It regulates passage of substances from brain into blood

Among the colloids cheese (C), milk (M) and smoke (S), the correct combination of the dispered phase and dispersion medium, respectively is :

Description : Among the colloids cheese (C), milk (M) and smoke (S), the correct combination of the dispered phase and dispersion medium, respectively is :

Last Answer : Among the colloids cheese (C), milk (M) and smoke (S), the correct combination of the dispered phase and ... , M : liquid in solid, S : solid in gas

The true statement about solutions of amino acids at physiological pH is (A) All amino acids contain both positive and negative charges (B) All amino acids contain positively charged side chains (C) Some amino acids contain only positive charge (D) All amino acids contain negatively charged side chains

Description : The true statement about solutions of amino acids at physiological pH is (A) All amino acids contain both positive and negative charges (B) All amino acids contain positively charged side chains ... amino acids contain only positive charge (D) All amino acids contain negatively charged side chains

Last Answer : Answer : A

The true statement about solutions of amino acids at physiological pH is (A) All amino acids contain both positive and negative charges (B) All amino acids contain positively charged side chains (C) Some amino acids contain only positive Charge (D) All amino acids contain negatively charged side chains

Description : The true statement about solutions of amino acids at physiological pH is (A) All amino acids contain both positive and negative charges (B) All amino acids contain positively charged side chains ... amino acids contain only positive Charge (D) All amino acids contain negatively charged side chains

Last Answer : (A) All amino acids contain both positive and negative charges

Cocentric springs are used in (A) Heavy duty diesel engines (B) aircraft engines (C) railroad suspensions (D) all of the above

Description : Cocentric springs are used in (A) Heavy duty diesel engines (B) aircraft engines (C) railroad suspensions (D) all of the above

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Drugs in suspensions and semi-solid formulations always degrade by (A) first order kinetics (B)second order kinetics (C) zero order kinetics (D) non-linear kinetics

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What is natural frequency of driver sheet suspensions a)0.5-1.5 Hz b)1.5-4.0 Hz c)4.0-6.0 Hz d)4.0-10 Hz

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Last Answer : a)0.5-1.5 Hz

The vacuole of a plant is composed of ____ with soluble substances dissolved within it. a. water c. oil b. juice d. minerals

Description : The vacuole of a plant is composed of ____ with soluble substances dissolved within it. a. water c. oil b. juice d. minerals

Last Answer : a. water

(a) Show on a diagram the transfer of electrons between the atoms in the formation of MgO. Write symbols of cation and anion present in MgO. (b) Name the solvent in which ionic compounds are generally soluble. (c) Why are aqueous solutions of ionic compounds able to conduct electricity? -Chemistry

Description : (a) Show on a diagram the transfer of electrons between the atoms in the formation of MgO. Write symbols of cation and anion present in MgO. (b) Name the solvent in which ionic compounds are generally soluble. (c) Why are aqueous solutions of ionic compounds able to conduct electricity? -Chemistry

Last Answer : (b) Ionic compounds are soluble in water. (c) It is because aqueous solutions consist of ions which can move freely in them and carry current.

Most covalent compounds (a) Behave like electrolytes in the molten state (b) Have high melting and boiling points (c) Are hard substances because of strong covalent bonds (d) Are more soluble in non-polar solvents than in polar solvents

Description : Most covalent compounds (a) Behave like electrolytes in the molten state (b) Have high melting and boiling points (c) Are hard substances because of strong covalent bonds (d) Are more soluble in non-polar solvents than in polar solvents

Last Answer : Ans:(d)

Cell membranes a. consist almost entirely of protein molecules b. are impermeable to fat-soluble substances c. in some tissues permit the transport of glucose at a greater rate in the presence of insulin d. are freely permeable to electrolytes but not to proteins e. have a stable composition throughout the life of the cell

Description : Cell membranes a. consist almost entirely of protein molecules b. are impermeable to fat-soluble substances c. in some tissues permit the transport of glucose at a greater rate in the presence of ... to electrolytes but not to proteins e. have a stable composition throughout the life of the cell

Last Answer : in some tissues permit the transport of glucose at a greater rate in the presence of insulin

05. What kind of substances can’t permeate membranes by passive diffusion? a) Lipid-soluble b) Non-ionized substances c) Hydrophobic substances d) Hydrophilic substances 06. A hydrophilic medicinal agent

Description : 05. What kind of substances can’t permeate membranes by passive diffusion? a) Lipid-soluble b) Non-ionized substances c) Hydrophobic substances d) Hydrophilic substances 06. A hydrophilic medicinal agent

Last Answer : d) Hydrophilic substances

(1) a homogeneous mixture of two or more substances Explanation: A homogeneous mixture of two or more substances uniformly dispersed throughout a single phase is called solution. In such a mixture, a solute is a substance dissolved in another substance, known as a solvent. The solution more or less takes on the characteristics of the solvent including its phase, and the solvent is commonly the major fraction of the mixture.

Description : (1) a homogeneous mixture of two or more substances Explanation: A homogeneous mixture of two or more substances uniformly dispersed throughout a single phase is called solution. In such a mixture, a ... the solvent including its phase, and the solvent is commonly the major fraction of the mixture.

Last Answer : Choose the incorrect statement pertaining to organic compounds - (1) They have low melting and boiling points (2) They do not dissolve in water (3) They are not easily combustible (4) They contain mainly carbon and hydrogen

The amount of different substances produced, when the same quantity of electricity is passed through different solutions are proportional to their (A) Equivalent weight (B) (Equivalent weight)2 (C) Molecular weight (D) (Molecular weight)2

Description : The amount of different substances produced, when the same quantity of electricity is passed through different solutions are proportional to their (A) Equivalent weight (B) (Equivalent weight)2 (C) Molecular weight (D) (Molecular weight)2

Last Answer : (A) Equivalent weight

Amphoteric substances: w) act as either bases or acids x) precipatate from aqueous solutions y) salt out of basic solutions z) form emulsions in oils

Description : Amphoteric substances: w) act as either bases or acids x) precipatate from aqueous solutions y) salt out of basic solutions z) form emulsions in oils

Last Answer : ANSWER: W -- ACT AS EITHER BASES OR ACIDS

Is it broadly true that the right looks to individuals and cultural factors when explaining social ills and seeking solutions to them while the left looks to systems and societal structures?

Description : Is it broadly true that the right looks to individuals and cultural factors when explaining social ills and seeking solutions to them while the left looks to systems and societal structures?

Last Answer : I agree with C. They’re both on to something.

for dental caries to progress in dentine, A. the dentine must contain soluble collagen B. enamel must contain glycoproteins C. diet must contain simple carbohydrate D. diet must contain polysaccharides E. pulp must contain complement

Description : for dental caries to progress in dentine, A. the dentine must contain soluble collagen B. enamel must contain glycoproteins C. diet must contain simple carbohydrate D. diet must contain polysaccharides E. pulp must contain complement

Last Answer : C. diet must contain simple carbohydrate

For dental caries to progress in dentine, A. The dentine must contain soluble collagen B. Enamel must contain glycoproteins C. Diet must contain simple carbohydrate D. Diet must contain polysaccharides E. Pulp must contain complement

Description : For dental caries to progress in dentine, A. The dentine must contain soluble collagen B. Enamel must contain glycoproteins C. Diet must contain simple carbohydrate D. Diet must contain polysaccharides E. Pulp must contain complement

Last Answer : C. Diet must contain simple carbohydrate

involves incorporating water soluble fertilizer into the irrigation systems of greenhouse and nursery crops. a. Broadcasting b. Fertilization c. Fertigation d. Perforation

Description : involves incorporating water soluble fertilizer into the irrigation systems of greenhouse and nursery crops. a. Broadcasting b. Fertilization c. Fertigation d. Perforation

Last Answer : Fertigation

Waste/polluted water discharged from electroplating, blast furnace and coal mining industries contain mainly __________ substances. (A) Radioactive (B) Organic (C) Inorganic (D) None of these

Description : Waste/polluted water discharged from electroplating, blast furnace and coal mining industries contain mainly __________ substances. (A) Radioactive (B) Organic (C) Inorganic (D) None of these

Last Answer : (C) Inorganic

The component of water potential which determine by the attraction between water and hydrating colloids.

Description : The component of water potential which determine by the attraction between water and hydrating colloids.

Last Answer : Ans. Matric potential

Bacterial aerobic oxidation of polluted water in biological oxidation ponds is done to purify it. Presence of bacteria helps in (A) Coagulation and flocculation of colloids (B) Oxidation of carbonaceous matter to CO2 (C) Nitrification or oxidation of ammonia derived from breakdown of nitrogenous organic matter to the nitrite and eventually to the nitrate (D) All (A), (B) and (C)

Description : Bacterial aerobic oxidation of polluted water in biological oxidation ponds is done to purify it. Presence of bacteria helps in (A) Coagulation and flocculation of colloids (B) Oxidation of carbonaceous matter to CO2 (C) ... to the nitrite and eventually to the nitrate (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

Fat dispersed in water is exemplified by (A) Colloids (B) Gel (C) Butter (D) Emulsion

Description : Fat dispersed in water is exemplified by (A) Colloids (B) Gel (C) Butter (D) Emulsion

Last Answer : (C) Butter

Does formalin contain harmful substances ?

Last Answer : We know that 40% of the aqueous solution of formaldehyde gas is called formalin. So the main component of formalin is formaldehyde gas.

What are colloids? What are its various properties -Science

Description : What are colloids? What are its various properties -Science

Last Answer : Colloid: A colloid is a heterogeneous mixture whose particles are not as small as solution but they are so small that cannot be seen by naked eye. When a beam of light is passed through a colloid then the path of the light becomes visible. For example milk, smoke etc.

Elements that show the properties of both metals and non-metals are called (a) Allotropes (b) Metalloids (c) Alloys (d) Colloids

Description : Elements that show the properties of both metals and non-metals are called (a) Allotropes (b) Metalloids (c) Alloys (d) Colloids

Last Answer : Ans:(b)

Colloids are purified by (a) Peptisation (b) Coagulation (c) Condensation (d) Dialysis

Description : Colloids are purified by (a) Peptisation (b) Coagulation (c) Condensation (d) Dialysis

Last Answer : Ans:(d)

Which colloids are solvent loving colloids? -General Knowledge

Description : Which colloids are solvent loving colloids? -General Knowledge

Last Answer : The answer is 'Lyophilic'

Which colloids are solvent loving colloids? -General Knowledge

Description : Which colloids are solvent loving colloids? -General Knowledge

Last Answer : answer:

Which of the following statements about colloids is False ?

Description : Which of the following statements about colloids is False ?

Last Answer : Which of the following statements about colloids is False ? A. When silver nitrate ... colloidal solution, colloidal particle will be precipitated.

Gold numbers of some colloids are : Gelatin : 0.005 - 0.01 , Gum Arabic : 0.15 - 0.25, Oleate : 0.04 - 1.0, Starch : 15 - 25. Which among these is a b

Description : Gold numbers of some colloids are : Gelatin : 0.005 - 0.01 , Gum Arabic : 0.15 - 0.25, Oleate : 0.04 - 1.0, Starch : 15 - 25. Which among these is a b

Last Answer : Gold numbers of some colloids are : Gelatin : 0.005 - 0.01 , Gum Arabic : 0.15 - 0.25, Oleate ... ? A. Gelatin B. Starch C. Gum Arabic D. Oleate

Gold numbers of protective colloids A, B, C and D are `0.50, 0.01, 0.10` and `0.005` respectively. The correct order of their protective powers is

Description : Gold numbers of protective colloids A, B, C and D are `0.50, 0.01, 0.10` and `0.005` respectively. The correct order of their protective powers is

Last Answer : Gold numbers of protective colloids A, B, C and D are `0.50, 0.01, 0.10` and `0.005` respectively. The correct ... lt A lt C` D. `D lt A lt C lt B`

When negatively charged colloids like `As_(2)S_(3)` sol is added to positively charged `Fe(OH)_(3)` sol in suitable amounts

Description : When negatively charged colloids like `As_(2)S_(3)` sol is added to positively charged `Fe(OH)_(3)` sol in suitable amounts

Last Answer : When negatively charged colloids like `As_(2)S_(3)` sol is added to positively charged `Fe ... colloids. D. They become negatively charged colloids.

Which of the following are multimolecular colloids ?

Description : Which of the following are multimolecular colloids ?

Last Answer : Which of the following are multimolecular colloids ? A. Sulphur B. Egg albumin in water C. Gold sol D. Soap solution

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.

Is yogurt a solution suspension or colloids?

Description : Is yogurt a solution suspension or colloids?

Last Answer : Colloid

The organic matter present in soil is known collectively as – (1) Hydrocarbons (2) Podsols (3) Humus (4) Colloids

Description : The organic matter present in soil is known collectively as – (1) Hydrocarbons (2) Podsols (3) Humus (4) Colloids

Last Answer : (3) Humus Explanation: The organic matter present in soil is known collectively as humus. Humus is fully decomposed and finely divided organic matter. Dune is a hill or ridge of sand accumulated and sorted by wind action.

Which colloids are solvent loving colloids?

Description : Which colloids are solvent loving colloids?

Last Answer : Lyophilic

Associated Colloids

Description : Associated Colloids

Last Answer : Associated Colloids :Those colloids which behave as strong electrolyte at low concentration but at high concentration behave like colloids due to formation of aggregated particle of colloidal dimensions. For eg. Micelles are associated colloids.

Macromolecular colloids

Description : Macromolecular colloids

Last Answer : Macromolecular colloids : A colloid in which the size of dispersed particles are in a colloidal range. Such dispersed phase in dispersion medium is called Macromolecular colloids. For Eg. Proteins, Starch and Cellulose form macromolecular colloids.

Multimolecular Colloids

Description : Multimolecular Colloids

Last Answer : Multimolecular Colloids: A colloid in which large no. of atoms or smaller molecules aggregate together to form species having size in colloidal range for eg. A sulphur sol consists of particles containing about a thousand of S8 molecule.

Lyophobic Colloids

Description : Lyophobic Colloids

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

Lyophilic Colloids

Description : Lyophilic Colloids

Last Answer : Lyophilic Colloids : Those colloids which are solvents loving or attracting they are reversible Sols.