Natural rubber is obtained from latex, which is a colloidal dispersion of rubber in water. Which of the following is used as a coagulant in latex? (A) Ammonium alum (B) Potassium alum(C) Both ‘a’ & ‘b’(D) Neither ‘a’ nor ‘b

Natural rubber is obtained from latex, which is a colloidal dispersion of
rubber in water. Which of the following is used as a coagulant in latex?
(A) Ammonium alum
(B) Potassium alum
(C) Both ‘a’ & ‘b’
(D) Neither ‘a’ nor ‘b
by

1 Answer

Answer :

(C) Both ‘a’ & ‘b
by

Related questions

Which of the following is a Newtonian fluid? (A) Rubber latex (B) Sewage sludge (C) Quicksand (D) Non-colloidal solution

Description : Which of the following is a Newtonian fluid? (A) Rubber latex (B) Sewage sludge (C) Quicksand (D) Non-colloidal solution

Last Answer : (D) Non-colloidal solution

The single parameter model proposed for describing non-ideal flow is the __________ model. (A) Tank in series (B) Dispersion (C) Both (A) & (B) (D) Neither (A) nor (B)

Description : The single parameter model proposed for describing non-ideal flow is the __________ model. (A) Tank in series (B) Dispersion (C) Both (A) & (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) & (B)

The most commonly used chemical coagulant in water treatment is (A) Ferrous sulphate (B) Alum (C) Lime (D) Hydrazine

Description : The most commonly used chemical coagulant in water treatment is (A) Ferrous sulphate (B) Alum (C) Lime (D) Hydrazine

Last Answer : (B) Alum

Which is the most widely used coagulant for the treatment of turbid water? (A) Alum (aluminium sulphate) (B) Lime (C) Ferric chloride (D) Sodium aluminate

Description : Which is the most widely used coagulant for the treatment of turbid water? (A) Alum (aluminium sulphate) (B) Lime (C) Ferric chloride (D) Sodium aluminate

Last Answer : (A) Alum (aluminium sulphate)

Most widely and commonly used coagulant for the removal of suspended impurities in water is (A) Bleaching powder (B) Slaked lime (C) Alum (D) Copper sulphate

Description : Most widely and commonly used coagulant for the removal of suspended impurities in water is (A) Bleaching powder (B) Slaked lime (C) Alum (D) Copper sulphate

Last Answer : (C) Alum

The purpose of adding Na2CO3 to water of low alkalinity is to (A) Permit the use of alum as a coagulant (B) Increase the softening capacity of zeolite (C) Facilitate easy regeneration of zeolite (D) All (A), (B) and (C)

Description : The purpose of adding Na2CO3 to water of low alkalinity is to (A) Permit the use of alum as a coagulant (B) Increase the softening capacity of zeolite (C) Facilitate easy regeneration of zeolite (D) All (A), (B) and (C)

Last Answer : (A) Permit the use of alum as a coagulant

Alum [Al2 (SO4 )3 ] is used as a coagulant in water treatment to remove (A) Colour (B) Turbidity (C) Bacteria (D) All (A), (B) and (C)

Description : Alum [Al2 (SO4 )3 ] is used as a coagulant in water treatment to remove (A) Colour (B) Turbidity (C) Bacteria (D) All (A), (B) and (C)

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

Temporary hardness of water can be removed by (A) Addition of alum (a coagulant) (B) Boiling (C) Filtration (through gravity sand filter) (D) Addition of lime

Description : Temporary hardness of water can be removed by (A) Addition of alum (a coagulant) (B) Boiling (C) Filtration (through gravity sand filter) (D) Addition of lime

Last Answer : (B) Boiling

The most widely used coagulant for removing suspended impurities from water is (A) Bleaching powder (B) Chlorine (C) Calcium sulphate (D) Alum

Description : The most widely used coagulant for removing suspended impurities from water is (A) Bleaching powder (B) Chlorine (C) Calcium sulphate (D) Alum

Last Answer : (D) Alum

Gutta percha rubber is (A) Soft & tacky at room temperature (B) An isomer of natural rubber (C) A thermosetting resin (D) Recovered by coagulation of rubber latex

Description : Gutta percha rubber is (A) Soft & tacky at room temperature (B) An isomer of natural rubber (C) A thermosetting resin (D) Recovered by coagulation of rubber latex

Last Answer : (B) An isomer of natural rubber

Q No: 291 The coagulant widely used for sewage treatment, is A. Alum B. Ferric chloride C. Ferric sulphate D. Chlorinated copperas

Description : Q No: 291 The coagulant widely used for sewage treatment, is A. Alum B. Ferric chloride C. Ferric sulphate D. Chlorinated copperas

Last Answer : ANS: B

The coagulant which is generally not used for treating the sewage, is A. Alum B. Ferric chloride C. Ferric sulphate D. Chlorinated copperas

Description : The coagulant which is generally not used for treating the sewage, is A. Alum B. Ferric chloride C. Ferric sulphate D. Chlorinated copperas

Last Answer : ANS: A

Alum is a (A) Coagulant (B) Flocculent (C) Catalyst (D) Disinfectant

Description : Alum is a (A) Coagulant (B) Flocculent (C) Catalyst (D) Disinfectant

Last Answer : (A) Coagulant

Mostly used coagulant, is (A) Chlorine (B) Alum (C) Lime (D) Bleaching powder

Description : Mostly used coagulant, is  (A) Chlorine  (B) Alum  (C) Lime  (D) Bleaching powder

Last Answer : (B) Alum

Starting material for the production of styrene butadiene rubber (SBR) is (A) Ethyl alcohol (B) Ethylene (C) Both (A) & (B) (D) Neither (A) nor (B)

Description : Starting material for the production of styrene butadiene rubber (SBR) is (A) Ethyl alcohol (B) Ethylene (C) Both (A) & (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) & (B)

rting raw material for the manufacture of alum is(A) Alumina(B) Gypsum(C) Bauxite(D) Ammonium bicarbonate

Description : rting raw material for the manufacture of alum is (A) Alumina (B) Gypsum (C) Bauxite (D) Ammonium bicarbonate

Last Answer : (C) Bauxite

Replenishment of dissolved oxygen in water stream polluted with industrial waste occurs by (A) Natural aeration of water stream (B) Photosynthetic action of algae (C) Both (A) & (B) (D) Neither (A) nor (B)

Description : Replenishment of dissolved oxygen in water stream polluted with industrial waste occurs by (A) Natural aeration of water stream (B) Photosynthetic action of algae (C) Both (A) & (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) & (B)

The colloidal system in which the disperse phase and dispersion medium are both liquids is known as :

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

Use of natural draft cooling tower is practised, when the air has low (A) Humidity (B) Temperature (C) Both 'a' & 'b' (D) Neither 'a' nor 'b'

Description : Use of natural draft cooling tower is practised, when the air has low (A) Humidity (B) Temperature (C) Both 'a' & 'b' (D) Neither 'a' nor 'b'

Last Answer : (C) Both 'a' & 'b

Natural draft created by the chimney depends upon (A) Temperature of the flue gas (B) Its height (C) Both (A) & (B) (D) Neither (A) nor (B)

Description : Natural draft created by the chimney depends upon (A) Temperature of the flue gas (B) Its height (C) Both (A) & (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) & (B)

The most suitable equipment used to devulcanise rubber scrap and to make water dispersion & rubber solution is a (A) Boundary mixer (B) Propeller agitator (C) Sharpies centrifuge

Description : The most suitable equipment used to devulcanise rubber scrap and to make water dispersion & rubber solution is a (A) Boundary mixer (B) Propeller agitator (C) Sharpies centrifuge

Last Answer : (A) Boundary mixer

__________ mixer is used for devulcanisation of rubber scrap & making water dispersion & rubber solution.(A) Tumbler (B) Banbury (C) Muller (D) Ribbon blender

Description : __________ mixer is used for devulcanisation of rubber scrap & making water dispersion & rubber solution. (A) Tumbler (B) Banbury (C) Muller (D) Ribbon blender

Last Answer : (B) Banbury

Nicotine is(A) A volatile alkaloid (B) Obtained by treating by-products of the tobacco processing industry (C) Both (A) and (B) (D) Neither (A) nor (B)

Description : Nicotine is(A) A volatile alkaloid (B) Obtained by treating by-products of the tobacco processing industry (C) Both (A) and (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) and (B)

(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

Cloud is a colloidal dispersion of (1) Air in a dispersion medium of water (2) Fog in a dispersion medium of water (3) Mist in a dispersion medium of air (4) Water drops in a dispersion medium of air

Description : Cloud is a colloidal dispersion of (1) Air in a dispersion medium of water (2) Fog in a dispersion medium of water (3) Mist in a dispersion medium of air (4) Water drops in a dispersion medium of air

Last Answer : Water drops in a dispersion medium of air

The colloidal system consisting of a liquid dispersed in a solid dispersion medium is termed as :

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

Identify dispersed phase and dispersion medium in the following colloidal dispersions : a. milk  b. blood  c. printing ink

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

What is one property of skim milk indicating that it is a colloidal dispersion?

Description : What is one property of skim milk indicating that it is a colloidal dispersion?

Last Answer : its dairy

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. 

All gases form what type of mixture? w) dispersion x) colloidal y) homogeneous z) heterogeneous

Description : All gases form what type of mixture? w) dispersion x) colloidal y) homogeneous z) heterogeneous

Last Answer : ANSWER: Y -- HOMOGENEOUS 

One property a colloidal dispersion has that a solution does not is: w) homogeneity x) filterability y) the Tyndall effect z) osmotic pressure

Description : One property a colloidal dispersion has that a solution does not is: w) homogeneity x) filterability y) the Tyndall effect z) osmotic pressure

Last Answer : ANSWER: Y -- THE TYNDALL EFFECT 

Ultracentrifuges running at speeds upto 100000 rpm is normally used for the (A) Separation of isotopes based on their density or molecular weights difference (B) Concentration of rubber latex (C) Separation of cream from milk (D) Dewaxing of lubricating oil

Description : Ultracentrifuges running at speeds upto 100000 rpm is normally used for the (A) Separation of isotopes based on their density or molecular weights difference (B) Concentration of rubber latex (C) Separation of cream from milk (D) Dewaxing of lubricating oil

Last Answer : (A) Separation of isotopes based on their density or molecular weights difference (B) Conc

Which of the following is used for the concentration of rubber latex? (A) Agitated film evaporator (B) Long tube vertical evaporator (C) Short tube evaporator (D) Calandria

Description : Which of the following is used for the concentration of rubber latex? (A) Agitated film evaporator (B) Long tube vertical evaporator (C) Short tube evaporator (D) Calandria

Last Answer : (A) Agitated film evaporator

Rubber latex is an example of a __________ fluid. (A) Pseudo plastic (B) Bingham plastic (C) Dilatent (D) Newtonian

Description : Rubber latex is an example of a __________ fluid. (A) Pseudo plastic (B) Bingham plastic (C) Dilatent (D) Newtonian

Last Answer : (A) Pseudo plastic

Rubber latex is an example of __________ fluid. (A) Dilatants (B) Newtonian (C) Pseudo plastic (D) Bingham plastic

Description : Rubber latex is an example of __________ fluid. (A) Dilatants (B) Newtonian (C) Pseudo plastic (D) Bingham plastic

Last Answer : (C) Pseudo plastic

An ideal plastic substance indicates no deformation, when stressed upto yield stress, but behaves like a Newtonian fluid beyond yield stress. Which of the following is an ideal plastic? (A) Sewage sludge (B) Rubber latex (C) Blood (D) Sugar solution

Description : An ideal plastic substance indicates no deformation, when stressed upto yield stress, but behaves like a Newtonian fluid beyond yield stress. Which of the following is an ideal plastic? (A) Sewage sludge (B) Rubber latex (C) Blood (D) Sugar solution

Last Answer : (A) Sewage sludge

Retention of sodium in the body leads to a retention of (A) Potassium (B) Water (C) Potassium and water (D) Neither potassium nor water

Description : Retention of sodium in the body leads to a retention of (A) Potassium (B) Water (C) Potassium and water (D) Neither potassium nor water

Last Answer : Answer : B

Which of the following reactions involve NEITHER oxidation nor reduction? w) burning antimony in chlorine x) decomposition of potassium chlorate y) reaction of sodium with water z) reaction of potassium hydroxide with nitric acid

Description : Which of the following reactions involve NEITHER oxidation nor reduction? w) burning antimony in chlorine x) decomposition of potassium chlorate y) reaction of sodium with water z) reaction of potassium hydroxide with nitric acid

Last Answer : ANSWER: Z -- REACTION OF POTASSIUM HYDROXIDE WITH NITRIC ACID  

Permanent - hardness of water may be removed by addition of – (1) Alum (2) Sodium carbonate (3) Lime (4) Potassium Permangante

Description : Permanent - hardness of water may be removed by addition of – (1) Alum (2) Sodium carbonate (3) Lime (4) Potassium Permangante

Last Answer : (2) Sodium carbonate Explanation: Sodium carbonate (also known as washing soda or soda ash) is a sodium salt of carbonic acid. In domestic use, it is used as a water softener in laundering. It ... with the detergent being used. Sodium carbonate can be used to remove grease, oil and wine stains.

Permanent – hardness of water may be removed by addition of (1) Alum (2) Sodium carbonate (3) Lime (4) Potassium Permangante

Description : Permanent – hardness of water may be removed by addition of (1) Alum (2) Sodium carbonate (3) Lime (4) Potassium Permangante

Last Answer : Sodium carbonate

A fast breeder reactor (A) Uses natural uranium as fuel (B) Does not require a moderator (C) Both (A) and (B) (D) Neither (A) nor (B)

Description : A fast breeder reactor (A) Uses natural uranium as fuel (B) Does not require a moderator (C) Both (A) and (B) (D) Neither (A) nor (B)

Last Answer : (B) Does not require a moderator

Natural draught produced by a chimney depends upon the (A) Density of the chimney gases (B) Height of the chimney (C) Both (A) and (B) (D) Neither (A) nor (B)

Description : Natural draught produced by a chimney depends upon the (A) Density of the chimney gases (B) Height of the chimney (C) Both (A) and (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) and (B)

The latex of which plant is used commercially? (1) Papaya plant (2) Sial kanta plant (3) Rubber plant (4) Banyan tree

Description : The latex of which plant is used commercially? (1) Papaya plant (2) Sial kanta plant (3) Rubber plant (4) Banyan tree

Last Answer : (3) Rubber plant Explanation: Natural rubber is harvested mainly in the form of the latex from the rubber tree. The latex is a sticky, milky colloid drawn off by making incisions in the bark ... in a process called "tapping". The latex then is refined into rubber ready for commercial processing.

Rubber is a product of a)Fibre b)Latex c) Resin d) Gum

Description : Rubber is a product of a)Fibre b)Latex c) Resin d) Gum

Last Answer : b)Latex

The latex of which plant is used commercially ? (1) Papaya plant (2) Sial kanta plant (3) Rubber plant (4) Banyan tree

Description : The latex of which plant is used commercially ? (1) Papaya plant (2) Sial kanta plant (3) Rubber plant (4) Banyan tree

Last Answer : Rubber plant

Which is the anti coagulant obtained from brown algae?

Description : Which is the anti coagulant obtained from brown algae?

Last Answer : Ans: Sodium laminarin sulphateobtained from Laminaria is an effective blood anti coagulant.  

Heat load in a cooling tower (A) Means the amount of heat thrown away (KCal/hr.) by the cooling tower (B) Is equal to the number of kg, of water circulated times the cooling range (C) Both (A) & (B) (D) Neither (A) nor (B)

Description : Heat load in a cooling tower (A) Means the amount of heat thrown away (KCal/hr.) by the cooling tower (B) Is equal to the number of kg, of water circulated times the cooling range (C) Both (A) & (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) & (B)

In the absorption of ammonia in water, the main resistance to absorption is by the __________ phase. (A) Liquid (B) Gas (C) Both (A) & (B) (D) Neither (A) nor (B)

Description : In the absorption of ammonia in water, the main resistance to absorption is by the __________ phase. (A) Liquid (B) Gas (C) Both (A) & (B) (D) Neither (A) nor (B)

Last Answer : (B) Gas