Description : Charcoal is used in water treatment as a/an (1) absorbent (2) coagulant (3) solvent (4) adsorbent
Last Answer : adsorbent
Description : Ferrous sulphate is used in water treatment as a/an - (1) Oxidizing agent (2) Reducing agent (3) Coagulant aid (4) Adsorbent
Last Answer : (3) Coagulant aid
Description : Ferrous sulphate is used in water treatment as a/an (1) Oxidizing agent (2) Reducing agent (3) Coagulant aid (4) Adsorbent
Last Answer : Coagulant aid
Description : Which of the following acts as best adsorbent? (1) Charcoal (2) Activated Charcoal (3) Activated Coconut Charcoal (4) Carbon black
Last Answer : (3) Activated Coconut Charcoal Explanation: Activated coconut charcoal is a highly absorbent material with millions of tiny pores that can capture, bind, and remove unwanted materials. The porous surface has a ... out of the body. It is used medicinally as well as in air and water purifiers.
Last Answer : Activated Coconut Charcoal
Description : Which of the following adsorbent is used in the refining of sugar? (A) Bone charcoal (B) Wood charcoal (C) Silica gel (D) Activated clay
Last Answer : (A) Bone charcoal
Description : The amount of chemical coagulant added for treatment of polluted water __________ with increase in temperature of the polluted water to be treated. (A) Decreases (B) Increases (C) Remain constant (D) May increase or decrease; depends on the chemical characteristics of polluted water
Last Answer : (A) Decreases
Description : The most commonly used chemical coagulant in water treatment is (A) Ferrous sulphate (B) Alum (C) Lime (D) Hydrazine
Last Answer : (B) Alum
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)
Description : Which of the following is used as a coagulant in water treatment? (A) Chloramine (B) Chlorine (C) Ferrous sulphate (D) Hydrogen peroxide
Last Answer : (C) Ferrous sulphate
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)
Description : Pick out the true statement pertaining to water treatment. (A) Slow sand filters can remove colour completely (B) Activated carbon can be used for taste & odour control without subsequent filtration ... of water (D) Normally, the turbidity is removed by adding a coagulant prior to sedimentation
Last Answer : (D) Normally, the turbidity is removed by adding a coagulant prior to sedimentation
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
Description : This natural fiber obtained from the stems of a plant of the nettle family has found popularity in modern fibers with a high wet strength, absorbent but dries quickly, it can be spun or woven, has a high rot ... a source of heat or power? w) Plutonium-238 x) Strontium-90 y) Cesium-137 z) Uranium-235
Last Answer : ANSWER: W -- PLUTONIUM-238
Description : Bleaching powder is used in drinking water as a/an – (1) disinfectant (2) antibiotic (3) antiseptic (4) coagulant
Last Answer : (1) disinfectant Explanation: Bleach refers to a number of chemicals which remove colour, whiten or disinfect, often via oxidation. Bleaches are used as household chemicals to whiten clothes and ... to control bacteria, viruses and algae and in any institution where sterile conditions are needed.
Description : Bleaching powder is used in drinking water as a/an (1) disinfectant (2) antibiotic (3) antiseptic (4) coagulant
Last Answer : disinfectant
Description : Which of the following is a suitable absorbent for removal of H2S from natural gas? (A) Vetrocoke solution (B) Monoethanolamine (MEA) (C) Dilute (D) Hot water
Last Answer : (B) Monoethanolamine (MEA)
Description : What is the name of the absorbent material used in printers for excess ink?
Last Answer : Need answer
Description : Is plywood absorbent?
Last Answer : Feel Free to Answer
Description : If you have an oily or saturated absorbent pad after refueling at a marina fuel dock what is the best thing to do it?
Last Answer : Ask the fuel dock staff what to do with it in order to disposeproperly
Description : If you have a oily or saturated absorbent pad after after at a marina dock what is the best thing to do with it?
Description : If you have a oily or saturated absorbent pad after refueling at a marina fuel dock what is the best thing to do with it?
Last Answer : Ask the fuel dock staff what to do with it in order to dispose properly
Description : Which of the following is an absorbent? A.silica gel B. activated alumina C. both of the mentioned D. none of the mentioned
Last Answer : ANSWER : C
Description : Low viscosity absorbent is preferred for reasons of (A) Rapid absorption rates and good heat transfer characteristics (B) Improved flooding characteristics (C) Low pressure drop on pumping (D) All (A), (B) and (C)
Description : . Ethanolamine is an absorbent used for the removal of __________ from air/gas. (A) HF (B) SO2 (C) H2S (D) Both (B) & (C)
Last Answer : (D) Both (B) & (C)
Description : High noise levels produced during operation of fans and compressors can be reduced by using (A) Mufflers (silencers) (B) Acoustic absorbent (C) Lagging of noisy duct (D) None of these
Last Answer : (A) Mufflers (silencers)
Description : Which is the most efficient absorbent for SO3 out of the following? (A) 20% oleum (B) 65% oleum (C) 78% H2SO4 (D) 98% H2SO4
Last Answer : (D) 98% H2SO4
Description : Which of the following is commonly used as liquid absorbent? a. Silica gel b. Activated alumina c. Ethylene glycol d. None of these
Last Answer : Ethylene glycol
Description : What is the purpose of the absorbent material in a directional coupler?
Last Answer : Absorb the energy not directed at the pick-up probe and a portion of the overall energy
Description : Paper is hygroscopic and absorbent. (A) True (B) False
Last Answer : (A) True
Description : Which of the following psychrometric processes is followed by water vapour laden unsaturated air, when it is passed through solid or liquid adsorbent? (A) Cooling and dehumidification ... (C) Dehumidification with dry bulb temperature remaining constant (D) None of these
Last Answer : (B) Heating and dehumidification at almost constant wet bulb temperature
Description : If `x` is the amount of adsorbate and `m` is the amount of adsorbent, which of the following relation is related to adsorption process?
Last Answer : If `x` is the amount of adsorbate and `m` is the amount of adsorbent, which of the following relation is related to ... (x/m) D. `(x)/(m)= p xx T`
Description : Adsorption of a gas follows Freundlich adsorption isotherm. In the given plot, x is the mass of the gas adsorbed on mass m of the adsorbent at pressur
Last Answer : Adsorption of a gas follows Freundlich adsorption isotherm. In the given plot, x is the mass of the gas adsorbed on mass m ... p^(1//2)` D. `p^(1//4)`
Description : If x gram of gas is adsobed by m gram of adsorbent at pressure P the plot of log `(x)/(m)` versus log P is linear .the slope of the plot is : (n and k
Last Answer : If x gram of gas is adsobed by m gram of adsorbent at pressure P the plot of log `(x)/(m)` versus log P is linear ... 2 k` B. log k C. n D. `(1)/(n)`
Description : Volume of `N_(2)` at 1 atm, 273 K required to form a monolayer on the surface of iron catalyst is `8.15ml//gm` of the adsorbent. What will be the surf
Last Answer : Volume of `N_(2)` at 1 atm, 273 K required to form a monolayer on the surface of iron catalyst is `8.15ml//gm` ... C. `39 m^(2)//g` D. `22400 cm^(2)`
Description : Explain why finely divided substance is more effective as adsorbent?
Last Answer : Explain why finely divided substance is more effective as adsorbent?
Description : The change in enthalpy per unit weight of adsorbed gas when adsorbed on gas free or "outgassed" adsorbent to from a definite concentration of adsorbate is called its (A) Integral heat of adsorption (B) Heat of wetting (C) Differential heat of adsorption (D) Heat of normal condensation
Last Answer : (A) Integral heat of adsorption
Description : As complete saturation of an adsorbent is approached, the differential heat of adsrop-tion approaches (A) That of normal condensation (B) Integral heat of adsorption (C) Zero (D) None of these
Last Answer : (A) That of normal condensation
Description : Which of the following adsorbent is used to decolourise yellow glycerine? (A) Silica gel (B) Alumina (C) Fuller's earth (D) Activated carbon
Last Answer : (D) Activated carbon
Description : At a given equilibrium pressure, with increase in temperature, the concentration of adsorbed gas on solid adsorbent (A) Increases (B) Decreases (C) Remains unchanged (D) Increases exponentially
Last Answer : (B) Decreases
Description : With the lowering of equilibrium pressure, at a given temperature, the amount of adsorbate on the adsorbent (A) Increases (B) Decreases (C) Remain same (D) Either (A) or (B), depends on the system
Description : Defination of Adsorbent
Last Answer : Adsorbent:- The solid or liquid substance on which adsorption takes place known as adsorbent .
Description : The change in enthalpy, when a unit quantity of gas is absorbed by relatively large quantity of adsorbent (on which a definite concentration of the adsorbed gas already exists) is termed as the (A) ... (B) Heat of wetting (C) Integral heat of adsorption (D) None of these
Last Answer : (A) Differential heat of adsorption
Description : Which adsorbent is used for removing sulphur compounds (S Q, H2S, RSH etc.) removal from coke oven gas in by-products recovery plant? (A) Silica gel (B) Diatomaceous earth (C) Basalt (D) Bog iron (i.e., moist ferric hydroxide)
Last Answer : (D) Bog iron (i.e., moist ferric hydroxide)
Description : Which of the following is an adsorbent for removal of nitrogen oxides from gas/air? (A) Active carbon (B) Silica gel (C) Bog iron (iron oxide) (D) Pulverised limestone
Last Answer : (B) Silica gel
Description : Which of the following is an adsorbent used for the removal of SO2 from gas/air? (A) Bog iron (B) Limestone powder or alkalised alumina (C) Silica gel (D) Active carbon
Last Answer : (B) Limestone powder or alkalised alumina
Description : Which of the following is used to reduce toxicity a). Reductant b). Safener c). Adsorbent d). Adjuvant
Last Answer : b). Safener
Description : An ingredient added to a formulation for enhancing the action of toxicant is called a). Adsorbent b). Adjuvant c). Antidote d). Active ingredient
Last Answer : b). Adjuvant
Description : 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
Last Answer : (C) Both ‘a’ & ‘b
Description : Suspended solid present in the waste water generated in blast furnace gas cooling and cleaning plant is removed by (A) Biological oxygen pond (B) Radial settling tank (thickener) using coagulant (lime & ferrous sulphate) (C) Lagoons (D) Filtration
Last Answer : (B) Radial settling tank (thickener) using coagulant (lime & ferrous sulphate)