Pick out the wrong statement. (A) Kraft method of pulp manufacture can process all types of fibrous raw materials (B) Digestion time for bagasse is less than that for wood base materials (C) Both temperature and pressure in the digestor is less in case of the sulphite method as compared to that in the sulphate method (D) None of these

Pick out the wrong statement.
(A) Kraft method of pulp manufacture can process all types of fibrous raw
materials
(B) Digestion time for bagasse is less than that for wood base materials
(C) Both temperature and pressure in the digestor is less in case of the
sulphite method as compared to that in the sulphate method
(D) None of these
by

1 Answer

Answer :

(D) None of these
by

Related questions

Out of the following processes of paper pulp manufacture, the maximum corrosion problem in digestion & handling equipments is encountered in the __________ process. (A) Mechanical (B) Sulphate/Kraft (C) Sulphite (D) Neutral sulphite semi-chemical

Description : Out of the following processes of paper pulp manufacture, the maximum corrosion problem in digestion & handling equipments is encountered in the __________ process. (A) Mechanical (B) Sulphate/Kraft (C) Sulphite (D) Neutral sulphite semi-chemical

Last Answer : (D) Neutral sulphite semi-chemical

Pick out the wrong statement. (A) Fibrillation of fibre during paper manufacture is done to develop the strength in paper (B) Alkali consumption in digestion/cooking of bamboo is measured in terms of permanganate number (C) Bagasse fibre contains both lignin & cellulose (D) Presence of sodium sulphate in pulp makes the pulp bleachability poor

Description : Pick out the wrong statement. (A) Fibrillation of fibre during paper manufacture is done to develop the strength in paper (B) Alkali consumption in digestion/cooking of bamboo is measured in terms ... both lignin & cellulose (D) Presence of sodium sulphate in pulp makes the pulp bleachability poor

Last Answer : (D) Presence of sodium sulphate in pulp makes the pulp bleachability poor

In the Kraft (sulphate) process for the paper manufacture, the digestor is made of (A) Cast iron (B) Stainless steel (C) Karbate carbon (D) Wrought iron

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Last Answer : (B) Stainless steel

In the Kraft process of sulphate paper pulp manufacture, the black liquor and the white liquor storage tank is made of (A) Concrete (B) Wood (C) Steel (D) Porcelain

Description : In the Kraft process of sulphate paper pulp manufacture, the black liquor and the white liquor storage tank is made of (A) Concrete (B) Wood (C) Steel (D) Porcelain

Last Answer : (C) Steel

In sulphate pulp manufacture, the pressure and temperature in the digestor is (A) 10 atm., 800 °C (B) 10 atm., 170-180°C (C) 1 atm., 170 - 180°C (D) 1 atm., 800°C

Description : In sulphate pulp manufacture, the pressure and temperature in the digestor is (A) 10 atm., 800 °C (B) 10 atm., 170-180°C (C) 1 atm., 170 - 180°C (D) 1 atm., 800°C

Last Answer : (B) 10 atm., 170-180°C

Paper pulp produced by Kraft/sulphate process is (A) Bleached easily (B) Dull white in color (C) Strong fibrous (D) Dark colored

Description : Paper pulp produced by Kraft/sulphate process is (A) Bleached easily (B) Dull white in color (C) Strong fibrous (D) Dark colored

Last Answer : (C) Strong fibrous

Digestion of wood-base materials (for manufacture of pulp) is done to (A) Remove lignin (B) Produce long fibres (C) Prevent deterioration on storage (D) None of these

Description : Digestion of wood-base materials (for manufacture of pulp) is done to (A) Remove lignin (B) Produce long fibres (C) Prevent deterioration on storage (D) None of these

Last Answer : (A) Remove lignin

The most economical pulp for the production of newsprint would be the __________ pulp. (A) Ground-wood (B) Sulphate (C) Sulphite (D) Semi-chemical

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Last Answer : (A) Ground-wood

. Most easily and cheaply available fibrous raw material for paper manufacture available in India is bamboo. The yield of pulp produced from fibrous raw material by mechanical process is about __________ percent. (A) 75 (B) < 10 (C) > 30 (D) 50

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Last Answer : (B) < 10

Which woody raw material is used for the manufacture of paper pulp? A. Cotton B. Poplar (Answer) C. Bagasse D. Rice straw

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Last Answer : B. Poplar (Answer)

In Kraft process of paper manufacture, white cooking liquor consists of caustic soda (A) Sodium sulphide & sodium carbonate (B) Sodium sulphite & sodium carbonate (C) Sodium sulphite & sodium sulphide (D) None of these

Description : In Kraft process of paper manufacture, white cooking liquor consists of caustic soda (A) Sodium sulphide & sodium carbonate (B) Sodium sulphite & sodium carbonate (C) Sodium sulphite & sodium sulphide (D) None of these

Last Answer : (A) Sodium sulphide & sodium carbonate

Which of the following is an additional step in the manufacture of paper from bagasse as compared to that from bamboo? (A) Depithing (B) Digestion (C) Bleaching (D) None of these

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Last Answer : (A) Depithing

In the manufacture of viscose rayon, the raw material used industrially is (A) Eucalyptus wood (B) Bamboo (C) Bagasse (D) Fine teak wood

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Last Answer : (D) Fine teak wood

Comparing sulphate process with sulphite process, we find that __________ in the later. (A) Both temperature & pressure in the former is less than that (B) Both temperature & pressure in the former is more than that (C) Temperature is more in the former whereas pressure is more(D) Pressure is more in the former whereas temperature is less

Description : Comparing sulphate process with sulphite process, we find that __________ in the later. (A) Both temperature & pressure in the former is less than that (B) Both temperature & pressure in the former ... the former whereas pressure is more (D) Pressure is more in the former whereas temperature is less

Last Answer : (B) Both temperature & pressure in the former is more than that

Pick out the wrong statement. (A) For the manufacture of styrene, the major raw materials are benzene and ethylene (B) One important copolymer of styrene is SBR, which is widely used in the manufacture of automobile tyres (C) Manufacture of phenol by chloroben-zene-eaustic process involves. The chlorination of benzene, causticisation and hydrolysis (D) Phenol manufacture by chlorobenzene-caustic process is competitive even when low cost chlorine is not available

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Last Answer : (D) Phenol manufacture by chlorobenzene-caustic process is competitive even when low cost chlorine is not available

The manufacture of Kraft pulp is done by a/an __________ process.(A) Alkaline (B) Acidic (C) Neutral (D) None of these

Description : The manufacture of Kraft pulp is done by a/an __________ process. (A) Alkaline (B) Acidic (C) Neutral (D) None of these

Last Answer : (A) Alkaline

Which is a high grade pulp? (A) Rag pulp(B) Mechanical pulp(C) Sulphate pulp(D) Sulphite pulp

Description : Which is a high grade pulp? (A) Rag pulp (B) Mechanical pulp (C) Sulphate pulp (D) Sulphite pulp

Last Answer : (C) Sulphate pulp

Viscose rayon (A) Cannot be made from sulphite pulp (B) Utilises H2SO4 , NaOH and CS2 during its manufacture (C) Cannot yield textile grade fibre (D) None of these

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Last Answer : (B) Utilises H2SO4 , NaOH and CS2 during its manufacture

Pick out the wrong statement. (A) Catalytic hydrogenation of carbon monoxide produces methyl alcohol (B) In nylon-6, the number 6 represents the total number of carbon atoms in the ring (C) Raw materials for DDT manufacture are benzene and chlorine (D) Ethanolamines are produced by using ammonia and ethylene oxide as raw material

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Last Answer : (C) Raw materials for DDT manufacture are benzene and chlorine

Cooking liquor in case of sulphite process is (A) Sodium sulphite and sodium bisulphite (B) Magnesium sulphite and free SO2 in acid medium (C) Magnesium sulphate and magnesium bicarbonate (D) None of these

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Last Answer : (A) Sodium sulphite and sodium bisulphite

Pick out the wrong statement. (A) Dry process is used for the manufacture of cement, when the raw material is blast furnace slag (B) Portland cement is made employing wet process (C) Gypsum is added to Portland cement to lengthen its setting time (D) None of these

Description : Pick out the wrong statement. (A) Dry process is used for the manufacture of cement, when the raw material is blast furnace slag (B) Portland cement is made employing wet process (C) Gypsum is added to Portland cement to lengthen its setting time (D) None of these

Last Answer : (D) None of these

Pick out the wrong statement pertaining to the soap manufacture. (A) Transparent soaps are made by cold process (B) Organic pigments are used as colouring materials in the soap manufacture (C) Both laundry as well as toilet soaps are manufactured by hot process (D) Colourless rosin is used in the manufacture of laundry soaps

Description : Pick out the wrong statement pertaining to the soap manufacture. (A) Transparent soaps are made by cold process (B) Organic pigments are used as colouring materials in the soap manufacture (C) ... soaps are manufactured by hot process (D) Colourless rosin is used in the manufacture of laundry soaps

Last Answer : (A) Transparent soaps are made by cold process

Pick out the wrong statement pertaining to nitric acid. (A) About 90% of nitric acid is manufactured by Ostwald's process (B) It is a strong mono basic acid which reacts with almost all the metals except noble metals (C) Yellow color of impure nitric acid is because of dissolved oxides of nitrogen (mainly NO2 ) (D) Arc process of nitric acid manufacture is economical as compared to Ostwald's process

Description : Pick out the wrong statement pertaining to nitric acid. (A) About 90% of nitric acid is manufactured by Ostwald's process (B) It is a strong mono basic acid which reacts with almost all the ... (mainly NO2 ) (D) Arc process of nitric acid manufacture is economical as compared to Ostwald's process

Last Answer : (D) Arc process of nitric acid manufacture is economical as compared to Ostwald's process

Cellulose content of bamboo and ideal fibrous raw material for the manufacture of paper is __________ percent. (A) 10 (B) 50 (C) 80 (D) 95

Description : Cellulose content of bamboo and ideal fibrous raw material for the manufacture of paper is __________ percent. (A) 10 (B) 50 (C) 80 (D) 95

Last Answer : (B) 50

Pick out the wrong statement. (A) Longer tubes are less expensive per unit heat transfer area as compared to shorter tubes (B) A cost index is merely a number for a given year showing the cost at that time relative to a certain base year (C) Turnover ratio of a chemical plant is the ratio of gross annual sales to the fixed capital investment (D) Plates with butt welded joints are less expensive compared to lap welded joints, because squaring of plates is not necessary

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Last Answer : (D) Plates with butt welded joints are less expensive compared to lap welded joints, because squaring of plates is not necessary

Bleaching of paper pulp is done with (A) Activated clay (B) Bromine (C) Chlorine or chlorine dioxide (D) Magnesium sulphite

Description : Bleaching of paper pulp is done with (A) Activated clay (B) Bromine (C) Chlorine or chlorine dioxide (D) Magnesium sulphite

Last Answer : (C) Chlorine or chlorine dioxide

The product used for manufacturing of Industrial alcohol is- (1) Khandasari (2) Bagasse (3) Molasses (4) Paper-pulp

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Last Answer : (3) Molasses Explanation: Molasses is a viscous by-product of the beating of sugarcane, grapes or sugar beets into sugar. Blackstrap molasses is a source of calcium, magnesium, potassium, and iron; ... It is used in the manufacture of ethyl alcohol for industry and as an ingredient in cattle feed.

Pick out the wrong statement. (A) Weldability of high carbon steel is poorer compared to low carbon steel (B) Invar is a magnetic alloy (C) Magnetic permeability of the diamagnetic material is less than one (D) Martenistic transformation never goes to completion (i.e., 100%) at room temperature

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Last Answer : Option B

Size reduction of fibrous materials like wood, asbestos, mica etc. is done by a disintegrator exemplified by the(A) Blake jaw crusher(B) Cage mill(C) Stamp mill(D) Bradford's breaker

Description : Size reduction of fibrous materials like wood, asbestos, mica etc. is done by a disintegrator exemplified by the (A) Blake jaw crusher (B) Cage mill (C) Stamp mill (D) Bradford's breaker

Last Answer : (B) Cage mill

Pick out the wrong statement. (A) Pulverised fuel can be completely burnt with less percentage of excess air compared to lump coal (B) Low grade coal can be used, but generally high volatile matter coals are more suitable for making pulverised fuel (C) Regulation of furnace temperature and atmosphere (oxidising or reducing) is easily possible with pulverised fuel firing (D) None of these

Description : Pick out the wrong statement. (A) Pulverised fuel can be completely burnt with less percentage of excess air compared to lump coal (B) Low grade coal can be used, but generally high volatile ... and atmosphere (oxidising or reducing) is easily possible with pulverised fuel firing (D) None of these

Last Answer : (D) None of these

Doctor's solution used for sweetening of petroleum products is (A) Sodium plumbite (B) Sodium sulphite (C) Sodium thiosulphate (D) Lead sulphate

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Last Answer : (A) Sodium plumbite

Raw materials for 'Solvay Process' for manufacture of the soda ash are (A) Salt, limestone and coke or gas(B) Ammonia, salt and limestone(C) Ammonia limestone and coke(D) None of these

Description : Raw materials for 'Solvay Process' for manufacture of the soda ash are (A) Salt, limestone and coke or gas (B) Ammonia, salt and limestone (C) Ammonia limestone and coke (D) None of these

Last Answer : (A) Salt, limestone and coke or gas

Pick out the wrong statement. (A) Cold SBR is superior as compared to hot SBR (B) Polymerisation temperature can modify the properties of SBR (C) Production of cold SBR employs lower pressure as compared to that of hot SBR (D) None of these

Description : Pick out the wrong statement. (A) Cold SBR is superior as compared to hot SBR (B) Polymerisation temperature can modify the properties of SBR (C) Production of cold SBR employs lower pressure as compared to that of hot SBR (D) None of these

Last Answer : (D) None of these

Pick out the wrong statement(A) Cold rubber (SBR) is superior as compared to hot rubber (SBR)(B) Polymerisation temperature can modify the properties of SBR(C) Production of cold SBR employs lower pressure as compared to that ofhot SBR(D) None of these

Description : Pick out the wrong statement (A) Cold rubber (SBR) is superior as compared to hot rubber (SBR) (B) Polymerisation temperature can modify the properties of SBR (C) Production of cold SBR employs lower pressure as compared to that of hot SBR (D) None of these

Last Answer : (D) None of these

Pick out the wrong statement about coating/electroplating of metals. (A) Phosphate coating is used as an excellent base for paints & enamels (B) Phosphate coating is less corrosion resistant than chromate coating (C) The base metal to be electroplated is normally made the cathode of the electrolytic cell and coating metal is made the anode (D) Calorising is the process of coating steel with chromium

Description : Pick out the wrong statement about coating/electroplating of metals. (A) Phosphate coating is used as an excellent base for paints & enamels (B) Phosphate coating is less corrosion resistant than ... coating metal is made the anode (D) Calorising is the process of coating steel with chromium

Last Answer : (D) Calorising is the process of coating steel with chromium

Pick up the correct statement from the following: (A) Catalysts are added to assist and accelerate the hardening of resin (B) The fillers are inert materials and they impart strength and hardness (C) Fibrous fillers increase thermal resistance (D) All the above

Description : Pick up the correct statement from the following: (A) Catalysts are added to assist and accelerate the hardening of resin (B) The fillers are inert materials and they impart strength and hardness (C) Fibrous fillers increase thermal resistance (D) All the above

Last Answer : Answer: Option D

Pick out the wrong statement. (A) Indian coals on an average contain 25-30% ash as against 10-12% ash in imported coking coal (B) Ammonia is recovered in the form of ammonium sulphate in direct process of by-product recovery (C) A high swelling index number of coking coal indicates poor caking properties of coal (D) Wash oil is used for scrubbing Benzol from coke oven gas

Description : Pick out the wrong statement. (A) Indian coals on an average contain 25-30% ash as against 10-12% ash in imported coking coal (B) Ammonia is recovered in the form of ammonium sulphate in direct ... indicates poor caking properties of coal (D) Wash oil is used for scrubbing Benzol from coke oven gas

Last Answer : (C) A high swelling index number of coking coal indicates poor caking properties of coal

Pick out the wrong statement. (A) The mole fraction of solute is directly proportional to the molality of a 'dilute' solution (B) For a non-reacting binary mixture of ideal gases, the partial pressure distribution of both components is nonlinear in the case of steady state unimolal unidirectional diffusion (C) Azeotropes obey Raoult's law at all temperature (D) The relative volatility of a binary mixture at the Azeotropic composition is 1

Description : Pick out the wrong statement. (A) The mole fraction of solute is directly proportional to the molality of a 'dilute' solution (B) For a non-reacting binary mixture of ideal gases, the partial ... at all temperature (D) The relative volatility of a binary mixture at the Azeotropic composition is 1

Last Answer : (C) Azeotropes obey Raoult's law at all temperature

Pick out the wrong statement. (A) Dehydration of ammonium carbamate to produce urea is endothermic (B) Direct use of liquid ammonia as a fertiliser for a tropical country like India is suitable (C) Gypsum (CaSO4 . 2H2O) is obtained as a by-product in the wet process for manufacture of ortho-phosphoric acid (D) Phosphate rock when reacted with dilute H2SO4 produces superphosphate

Description : Pick out the wrong statement. (A) Dehydration of ammonium carbamate to produce urea is endothermic (B) Direct use of liquid ammonia as a fertiliser for a tropical country like India ... manufacture of ortho-phosphoric acid (D) Phosphate rock when reacted with dilute H2SO4 produces superphosphate

Last Answer : (B) Direct use of liquid ammonia as a fertiliser for a tropical country like India is suitable

Pick out the wrong statement. (A) Chamber process of sulphuric acid manufacture produces pure acid of concentration < 80% (B) Contact process of sulphuric acid manufacture produces pure acid of concentration ≥ 98% (C) 75% oleum can be produced by distillation of 20% oleum (D) Contact process of sulphuric acid manufacture uses nickel as the catalyst

Description : Pick out the wrong statement. (A) Chamber process of sulphuric acid manufacture produces pure acid of concentration < 80% (B) Contact process of sulphuric acid manufacture produces pure acid of ... of 20% oleum (D) Contact process of sulphuric acid manufacture uses nickel as the catalyst

Last Answer : (D) Contact process of sulphuric acid manufacture uses nickel as the catalyst

Activity of cytochrome oxidase is inhibited by (A) Sulphite (B) Sulphate (C) Arsenite (D) Cyanide

Description : Activity of cytochrome oxidase is inhibited by (A) Sulphite (B) Sulphate (C) Arsenite (D) Cyanide

Last Answer : Answer : D

Nitro-glycerine absorbed in wood flour, sodium nitrate or ammonium nitrate is commercially used as controlled explosive called dynamite. The raw material used for its manufacture are glycerine, nitric acid and (A) Sulphuric acid (B) Phosphoric acid (C) Hydrochloric acid (D) Hydrofluoric acid

Description : Nitro-glycerine absorbed in wood flour, sodium nitrate or ammonium nitrate is commercially used as controlled explosive called dynamite. The raw material used for its manufacture are glycerine, nitric acid and (A) Sulphuric acid (B) Phosphoric acid (C) Hydrochloric acid (D) Hydrofluoric acid

Last Answer : (A) Sulphuric acid

Pick out the false statement pertaining to water treatment(A) Aeration of water is effective in CO2removal(B) The zeolite water softening process reduces the hardness of water by notmore than 50%(C) Sodium sulphate or sodium carbonate do not cause hardness in water(D) Water with pH value less than 7, is acidic.

Description : Pick out the false statement pertaining to water treatment. (A) Aeration of water is effective in CO2 removal (B) The zeolite water softening process reduces the hardness of water by not more than 50% (C ... carbonate do not cause hardness in water (D) Water with pH value less than 7, is acidic

Last Answer : (B) The zeolite water softening process reduces the hardness of water by not more than 50%

Pick out the correct statement. (A) Reaction of NH3 with HNO3 to produce (NH4 )2NO3 is endothermic (B) With increase in NH3 /CO2 ratio, urea yield decreases for a given temperature, pressure and total feed rate (C) Biuret (an intermediate during urea manufacture) is toxic to seeds and animals (D) Both (B) and (C)

Description : Pick out the correct statement. (A) Reaction of NH3 with HNO3 to produce (NH4 )2NO3 is endothermic (B) With increase in NH3 /CO2 ratio, urea yield decreases for a given temperature, pressure and total ... (an intermediate during urea manufacture) is toxic to seeds and animals (D) Both (B) and (C)

Last Answer : (B) With increase in NH3 /CO2 ratio, urea yield decreases for a given temperature, pressure and total feed rate

Pick out the wrong statement. (A) The integral method of analysing kinetic data is used when the data is scattered (B) The differential method of analysing kinetic data requires more accurate or larger amounts of data (C) When the reaction rate is independent of temperature, the reaction is said to be of zero order (D) The ratio of volumes of plug flow reactor to that of mixed reactor is always less than one for identical feed composition, flow rate, conversion and for all positive reaction orders

Description : Pick out the wrong statement. (A) The integral method of analysing kinetic data is used when the data is scattered (B) The differential method of analysing kinetic data requires more accurate ... less than one for identical feed composition, flow rate, conversion and for all positive reaction orders

Last Answer : (C) When the reaction rate is independent of temperature, the reaction is said to be of zero order

Raw materials for nitric acid manufacture are (A) Hydrogen peroxide, air and water (B) Anhydrous ammonia and air (C) Anhydrous ammonia, air and water (D) Wet ammonia, air and water

Description : Raw materials for nitric acid manufacture are (A) Hydrogen peroxide, air and water (B) Anhydrous ammonia and air (C) Anhydrous ammonia, air and water (D) Wet ammonia, air and water

Last Answer : (C) Anhydrous ammonia, air and water

Raw materials required for the manufacture of __________ is acetylene and hydrochloric acid. (A) Phthalic anhydride (B) Vinyl chloride (C) Maleic anhydride (D) Dacron

Description : Raw materials required for the manufacture of __________ is acetylene and hydrochloric acid. (A) Phthalic anhydride (B) Vinyl chloride (C) Maleic anhydride (D) Dacron

Last Answer : (B) Vinyl chloride

Pick out the wrong statement. (A) The controlling resistance in case of heating of air by condensing steam is in the air film (B) The log mean temperature difference (LMTD) for counter flow and parallel flow can be theoretically same when any one of the fluids (hot or cold fluid) passes through the heat exchanger at constant temperature (C) In case of a 1 - 2 shell and tube heat exchanger, the LMTD correction factor value increases sharply, when a temperature cross occurs (D) Phase change in case of a pure fluid at a given pressure from liquid to vapor or vice-versa occurs at saturation temperature

Description : Pick out the wrong statement. (A) The controlling resistance in case of heating of air by condensing steam is in the air film (B) The log mean temperature difference (LMTD) for ... a pure fluid at a given pressure from liquid to vapor or vice-versa occurs at saturation temperature

Last Answer : (C) In case of a 1 - 2 shell and tube heat exchanger, the LMTD correction factor value increases sharply, when a temperature cross occurs

Pick out the wrong statement. (A) Nitrogen is normally supplied in fertiliser either in Ammoniacal or the nitrate form, from which the soil takes it up in the form of ammonium ions ornitrate ions and forms amino acids(B) Calcium present in the fertiliser helps in correcting the soil acidity(C) Particle size range of a good granular fertiliser is 10-15 mesh and itcontains less moisture as compared to finely divided powder form of fertiliser(D) Ammonium nitrate fertiliser is obtained as a by-product in an integratedsteel plant having by-product coke ovens

Description : Pick out the wrong statement. (A) Nitrogen is normally supplied in fertiliser either in Ammoniacal or the nitrate form, from which the soil takes it up in the form of ammonium ions ornitrate ... nitrate fertiliser is obtained as a by-product in an integrated steel plant having by-product coke ovens

Last Answer : (D) Ammonium nitrate fertiliser is obtained as a by-product in an integrated steel plant having by-product coke ovens