Biuret formation in urea is kept at minimum (< 1 %), because it is (A) Corrosive in nature (B) Toxic and harmful to some crops (C) Helpful in decomposition of urea (D) Explosive in nature

Biuret formation in urea is kept at minimum (< 1 %), because it is
(A) Corrosive in nature
(B) Toxic and harmful to some crops
(C) Helpful in decomposition of urea
(D) Explosive in nature
by

1 Answer

Answer :

(B) Toxic and harmful to some crops
by

Related questions

Prilling of urea should be accomplished (in a sprayer) just above the melting point of urea with minimum of retention time, otherwise it will result in (A) Low bulk density product (B) Biuret formation (C) Non-spherical prills (D) Substantially wet non-flowing and sticky product

Description : Prilling of urea should be accomplished (in a sprayer) just above the melting point of urea with minimum of retention time, otherwise it will result in (A) Low bulk density product (B) Biuret formation (C) Non-spherical prills (D) Substantially wet non-flowing and sticky product

Last Answer : (B) Biuret formation

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

Yield of urea can be increased with excess ammonia and higher pressure & temperature, but because of __________ this is normally not done. (A) Increased biuret formation (B) High corrosion rate (C) Increased cost of equipment (D) All (A), (B) & (C)

Description : Yield of urea can be increased with excess ammonia and higher pressure & temperature, but because of __________ this is normally not done. (A) Increased biuret formation (B) High corrosion rate (C) Increased cost of equipment (D) All (A), (B) & (C)

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

Lower temperature and large excess of ammonia in urea melt (A) Increases biuret formation (B) Decreases biuret formation (C) Is undesirable (D) Does not effect biuret formation

Description : Lower temperature and large excess of ammonia in urea melt (A) Increases biuret formation (B) Decreases biuret formation (C) Is undesirable (D) Does not effect biuret formation

Last Answer : (B) Decreases biuret formation

mmonium nitrate is (A) Having about 40% N2 (B) Not hygroscopic (C) Not prone to explosive thermal decomposition (D) Mixed with limestone powder to reduce its explosive nature before using it as a fertilizer

Description : mmonium nitrate is (A) Having about 40% N2 (B) Not hygroscopic (C) Not prone to explosive thermal decomposition (D) Mixed with limestone powder to reduce its explosive nature before using it as a fertilizer

Last Answer : (D) Mixed with limestone powder to reduce its explosive nature before using it as a fertilizer

Describe the following points with respect to manufacturing of Urea. (i) Temperature (ii) Pressure (iii) Formation of Biuret

Description : Describe the following points with respect to manufacturing of Urea. (i) Temperature (ii) Pressure (iii) Formation of Biuret

Last Answer : Manufacturing of Urea w.r.t following points 1. Temperature: Urea production rate increases as temperature increases up to 180oC and then fall sharply. 2. Pressure: Urea production rate increases as pressure ... before sending to prilling tower. 2NH2 .CO.NH2 = NH2.CO.NH.CO.NH2 + NH

Battery charging rooms should be well ventilated because the charging process produces_____________. A. highly poisonous gas B. highly combustible oxygen C. explosive gases D. corrosive gases

Description : Battery charging rooms should be well ventilated because the charging process produces_____________. A. highly poisonous gas B. highly combustible oxygen C. explosive gases D. corrosive gases

Last Answer : Answer: C

Though liquid ammonia itself is a fertiliser (with 82% nitrogen content) yet it is commonly not used as such in a tropical country like India, because it (A) Has a pungent smell (B) Vaporises at normal temperature (C) Is toxic and highly corrosive (D) Is in short supply

Description : Though liquid ammonia itself is a fertiliser (with 82% nitrogen content) yet it is commonly not used as such in a tropical country like India, because it (A) Has a pungent smell (B) Vaporises at normal temperature (C) Is toxic and highly corrosive (D) Is in short supply

Last Answer : (B) Vaporises at normal temperature

__________ is the undesirable by-product produced in the manufacture of urea. (A) Ammonium carbonate (B) Biuret (C) Carbon dioxide (D) Ammonium carbamate

Description : __________ is the undesirable by-product produced in the manufacture of urea. (A) Ammonium carbonate (B) Biuret (C) Carbon dioxide (D) Ammonium carbamate

Last Answer : (B) Biuret

Dehydration of ammonium carbamate produces (A) Urea (B) Biuret (C) Ammonia water (D) None of these

Description : Dehydration of ammonium carbamate produces (A) Urea (B) Biuret (C) Ammonia water (D) None of these

Last Answer : (A) Urea

In the manufacture of urea, the intermediate chemical formed is (A) Biuret (B) Ammonium carbamate (C) Ammonium carbonate (D) None of these

Description : In the manufacture of urea, the intermediate chemical formed is (A) Biuret (B) Ammonium carbamate (C) Ammonium carbonate (D) None of these

Last Answer : (B) Ammonium carbamat

With increases in pressure, the conversion of Ammonium carbamate into urea (A) Increases (B) Decreases (C) Remains unaltered (D) Can either increase or decrease depends on biuret content

Description : With increases in pressure, the conversion of Ammonium carbamate into urea (A) Increases (B) Decreases (C) Remains unaltered (D) Can either increase or decrease depends on biuret content

Last Answer : (A) Increases

Bile pigments are (a) Helpful in digestion (b) Toxic in nature (c) Brings emulsification (d) None

Description : Bile pigments are (a) Helpful in digestion (b) Toxic in nature (c) Brings emulsification (d) None

Last Answer : (b) Toxic in nature

What happens when urea is treated with hydrazine? (a) Biuret is formed (b) Semicarbazide is formed(c) Carbon dioxide and nitrogen is formed(d) Acetamide is formed

Description : What happens when urea is treated with hydrazine? (a) Biuret is formed (b) Semicarbazide is formed (c) Carbon dioxide and nitrogen is formed (d) Acetamide is formed

Last Answer : Semicarbazide is formed

In a gas-liquid shell and tube heat exchanger, the(A) Presence of a non-condensable gas decreases the condensing film co￾efficient (B) Gases under high pressure are routed through the tube side, because high pressure gases are corrosive in nature (C) Gases to be heated/cooled is normally routed through the shell side, because the corrosion caused by the cooling water or steam condensate remain localised to the tubes (D) All 'a', 'b' & 'c'

Description : In a gas-liquid shell and tube heat exchanger, the (A) Presence of a non-condensable gas decreases the condensing film co￾efficient (B) Gases under high pressure are routed through the tube side, because high pressure ... water or steam condensate remain localised to the tubes (D) All 'a', 'b' & 'c'

Last Answer : (D) All 'a', 'b' & 'c'

RDX (an explosive), which is more sensitive but less toxic than TNT, is chemically (A) Cyclo trimethylene trinitramine (B) Trinitro resorcinol (C) Cyclo tetramethylene tetranitramine (D) Trinitrobenzene

Description : RDX (an explosive), which is more sensitive but less toxic than TNT, is chemically (A) Cyclo trimethylene trinitramine (B) Trinitro resorcinol (C) Cyclo tetramethylene tetranitramine (D) Trinitrobenzene

Last Answer : (A) Cyclo trimethylene trinitramine

Pick out the wrong statement. (A) Low intensity explosives are also called propellants, whereas high intensity explosive are called detonators (B) Gun powder comprises of 75% salt petre, 15% charcoal and 10% sulphur (C) Lead azide is a popular military explosive (D) TNT is a hygroscopic explosive having very high melting point and is non-toxic to human being

Description : Pick out the wrong statement. (A) Low intensity explosives are also called propellants, whereas high intensity explosive are called detonators (B) Gun powder comprises of 75% salt petre, 15% charcoal ... TNT is a hygroscopic explosive having very high melting point and is non-toxic to human being

Last Answer : (D) TNT is a hygroscopic explosive having very high melting point and is non-toxic to human being

Ethers are kept in brown bottles because (a) Brown bottles are cheaper than colorless clear bottles (b) Ethers absorb moisture(c) Ethers evaporate readily(d) Ethers are oxidized to explosive peroxides

Description : Ethers are kept in brown bottles because (a) Brown bottles are cheaper than colorless clear bottles (b) Ethers absorb moisture (c) Ethers evaporate readily (d) Ethers are oxidized to explosive peroxides

Last Answer : Ethers are oxidized to explosive peroxides

Ammonium nitrate (is mixed with limestone) is not used as fertiliser as such, because (A) It is hygroscopic and explosive in nature (B) It is highly acidic in nature (C) It is a liquid at room temperature (D) Its nitrogen content is very less

Description : Ammonium nitrate (is mixed with limestone) is not used as fertiliser as such, because (A) It is hygroscopic and explosive in nature (B) It is highly acidic in nature (C) It is a liquid at room temperature (D) Its nitrogen content is very less

Last Answer : (A) It is hygroscopic and explosive in nature

When lead-acid batteries are charging, they always give off hydrogen gas that is _____________. A. considered inert B. highly explosive C. extremely toxic D. heavier than air

Description : When lead-acid batteries are charging, they always give off hydrogen gas that is _____________. A. considered inert B. highly explosive C. extremely toxic D. heavier than air

Last Answer : Answer: B

The minimum cross fall of shoulders is kept (A) 0.5 % (B) 1.0 % (C) 1.5 % (D) 3 %

Description : The minimum cross fall of shoulders is kept (A) 0.5 % (B) 1.0 % (C) 1.5 % (D) 3 %

Last Answer : Answer: Option D

(4) less soluble in blood than nitrogen at high pressure Explanation: Deep-sea divers have their oxygen supply mixed with helium in order to avoid the toxic nature of oxygen under extreme pressures. The Helium atom is much smaller than the Nitrogen molecule, has a smaller electron cloud and is less polarizable. It, therefore is less soluble in blood than nitrogen and prevents the formation of nitrogen bubbles in blood which blocks blood flow as the diver comes to the surface of the sea from underwater.

Description : (4) less soluble in blood than nitrogen at high pressure Explanation: Deep-sea divers have their oxygen supply mixed with helium in order to avoid the toxic nature of oxygen under extreme pressures. The ... blood which blocks blood flow as the diver comes to the surface of the sea from underwater.

Last Answer : The chemical bahaviour of an atom depends upon - (1) the number of protons in its nucleus (2) the number of neutrons in the nucleus (3) the number of electrons orbiting around the nucleus (4) the number of nucleons in the nucleus

Condensing film co-efficient for steam on horizontal tubes ranges from 5000 to 15000 Kcal/hr.m2 .°C. Condensation of vapor is carried out inside the tube in a shell and tube heat exchanger, when the (A) Higher condensing film co-efficient is desired (B) Condensate is corrosive in nature (C) Lower pressure drop through the exchanger is desired (D) Temperature of the incoming vapor is very high Answer: Option B

Description : Condensing film co-efficient for steam on horizontal tubes ranges from 5000 to 15000 Kcal/hr.m2 .°C. Condensation of vapor is carried out inside the tube in a shell and tube heat ... drop through the exchanger is desired (D) Temperature of the incoming vapor is very high

Last Answer : (B) Supersaturated

The type of liquor circulation system to be ' employed in evaporators (viz. natural or forced circulation) is determined mainly by the __________ of the liquid. (A) Viscosity (B) Density (C) Thermal conductivity (D) Corrosive nature

Description : The type of liquor circulation system to be ' employed in evaporators (viz. natural or forced circulation) is determined mainly by the __________ of the liquid. (A) Viscosity (B) Density (C) Thermal conductivity (D) Corrosive nature

Last Answer : (A) Viscosity

Design of waste heat boiler for recovery of waste heat from furnace gases depends upon the(A) Quantity & temperature of waste gas(B) Dust concentration & nature of dust in waste gas(C) Corrosive nature of the waste gas(D) All (A), (B) and (C)

Description : Design of waste heat boiler for recovery of waste heat from furnace gases depends upon the (A) Quantity & temperature of waste gas (B) Dust concentration & nature of dust in waste gas (C) Corrosive nature of the waste gas (D) All (A), (B) and (C)

Last Answer : (B) Dust concentration & nature of dust in waste gas

Which of the following is an undesirable property of a manometricliquid? (A) Non-sticky & non-corrosive nature (B) High vapour pressure (C) Low viscosity & surface tension (D) Low co-efficient of thermal expansion

Description : Which of the following is an undesirable property of a manometricliquid? (A) Non-sticky & non-corrosive nature (B) High vapour pressure (C) Low viscosity & surface tension (D) Low co-efficient of thermal expansion

Last Answer : (B) High vapour pressure

Use of water as a manometric liquid suffers from the disadvantage of its (A) Low vapour pressure (B) Corrosive nature (C) High vapour pressure (D) High boiling point

Description : Use of water as a manometric liquid suffers from the disadvantage of its (A) Low vapour pressure (B) Corrosive nature (C) High vapour pressure (D) High boiling point

Last Answer : (C) High vapour pressure

Which of the following statement is not correct with respect to alcohols as alternate fuel in IC engines a) anti-knock characteristics of alcohol is poor b) alcohol contains about half the heat energy of gasoline/litre c) alcohol does not vaporize as easily as gasoline d) alcohols are corrosive in nature

Description : Which of the following statement is not correct with respect to alcohols as alternate fuel in IC engines a) anti-knock characteristics of alcohol is poor b) alcohol contains about half the heat ... /litre c) alcohol does not vaporize as easily as gasoline d) alcohols are corrosive in nature

Last Answer : Answer: a Explanation: Anti-knock characteristics of alcohol is good.

An Afro-Carribean male aged 48 years presents with gradual onset of exertional dyspnoea, non productive cough, malaise, weight loss and polyarthralgia. Schirmers test indicates a dry eye. X-ray of the hand shows punched out osteopenic lesions. Which of the following investigation is unlikely to be helpful in establishing the diagnosis of this condition: 1) Serum calcium 2) Serum phosphorus 3) Urea and electrolytes 4) Thallium Scan 5) Quantitative Immunoglobulins.

Description : An Afro-Carribean male aged 48 years presents with gradual onset of exertional dyspnoea, non productive cough, malaise, weight loss and polyarthralgia. Schirmers test indicates a dry eye. X-ray ... 2) Serum phosphorus 3) Urea and electrolytes 4) Thallium Scan 5) Quantitative Immunoglobulins.

Last Answer : Answers-4 This condition is sarcoidosis. Serum calcium, Serum phosphorus, Chem7 and Chem 20 and Quantitative Immunoglobulins are all used in establishing the diagnosis. Gallium scan is helpful in ... areas of poor perfusion. It is particularly used in cardiology to detect areas of ischaemia.

Which of the following is NOT a function of the kidney? a) excretion of urea b) regulation of fluids and electrolytes c) elimination of toxic substances d) defecation

Description : Which of the following is NOT a function of the kidney? a) excretion of urea b) regulation of fluids and electrolytes c) elimination of toxic substances d) defecation

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Do you think the things this man did before he died will be helpful or harmful?

Description : Do you think the things this man did before he died will be helpful or harmful?

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Are insulin shots Really helpful in diabetes or harmful? Anything better?

Description : Are insulin shots Really helpful in diabetes or harmful? Anything better?

Last Answer : They’re helpful if you don’t want to die of hyperglycemia. I’ve had people who don’t take their insulin and come in to the emergency department in comas with blood sugar values in the 800–900 range. Definitely a bad thing.

Studies about G-spot helpful or harmful?

Description : Studies about G-spot helpful or harmful?

Last Answer : Meh. Neither. Find a loving, giving partner who will try to find ways to make you feel good. Who the hell cares about what a researcher says will or won’t feel a certain way in your body?

Are tiny ants helpful or harmful to cucumber plants?

Description : Are tiny ants helpful or harmful to cucumber plants?

Last Answer : They love ground cornmeal put some away from that cucumber plant...they will eat it and not digest it. When the sun goes down & the plant is cooled off, mix up 1 teasp non-alcohol liquid soap & 1 qt of water and ... again if you see them. spray the buds..................and again after a rain.

Halki Diabetes Remedy -Is it Harmful Or Helpful?

Description : Halki Diabetes Remedy -Is it Harmful Or Helpful?

Last Answer : If you want to know exactly about Halki Diabetes Remedy, let go to Diziti dot com to read!Its tittle is: Halki Diabetes Remedy review -Is it Harmful Or Helpful?

Accommodation has both advantages and disadvantages as a conflict resolution strategy. Parties need to carefully consider when accommodation will be helpful, or potentially harmful. Which situation is NOT an appropriate time to practice accommodation?

Description : Accommodation has both advantages and disadvantages as a conflict resolution strategy. Parties need to carefully consider when accommodation will be helpful, or potentially harmful. Which situation is NOT an appropriate time to practice accommodation?

Last Answer : When you feel as though you are being taken advantage of. apex.

Pick out the wrong statement. (A) Packed towers are preferred for vacuum operation, because the pressure drop through the packing is less and they (packings) also lessen the possibility of tower wall collapse (B) Packed towers are preferred over plate towers for handling corrosive and foamy liquids (C) Diameter of randomly packed tower is normally more than 1.2 metres (D) Due to uneven supply and improper distribution of liquid, problem of channelling, loading & flooding is generally encountered in packed towers

Description : Pick out the wrong statement. (A) Packed towers are preferred for vacuum operation, because the pressure drop through the packing is less and they (packings) also lessen the ... of liquid, problem of channelling, loading & flooding is generally encountered in packed towers

Last Answer : (C) Diameter of randomly packed tower is normally more than 1.2 metres

Photochemical smog is formed from automobile exhaust (A) By reaction of hydrocarbon & nitric oxide in presence of sunlight (B) Appears only on sunny days (C) Is harmful for crops and trees also besides causing eye irritation & asthma (D) All (A), (B) & (C)

Description : Photochemical smog is formed from automobile exhaust (A) By reaction of hydrocarbon & nitric oxide in presence of sunlight (B) Appears only on sunny days (C) Is harmful for crops and trees also besides causing eye irritation & asthma (D) All (A), (B) & (C)

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

Presence of high amount of silicon in cast iron (A) Suppresses the decomposition of Fe3C (B) Increases the formation of graphite (C) Increases the contraction of the metal (D) Reduces its fluidity

Description : Presence of high amount of silicon in cast iron (A) Suppresses the decomposition of Fe3C (B) Increases the formation of graphite (C) Increases the contraction of the metal (D) Reduces its fluidity

Last Answer : (B) Increases the formation of graphite

Heat requirement for decomposition of a compound into its elements is __________ that is evolved during the formation of that compound from its elements. (A) The same (B) Less than (C) Greater than (D) Different than

Description : Heat requirement for decomposition of a compound into its elements is __________ that is evolved during the formation of that compound from its elements. (A) The same (B) Less than (C) Greater than (D) Different than

Last Answer : (A) The same

Is thing colored tissue paper toxic and harmful if eaten?

Description : Is thing colored tissue paper toxic and harmful if eaten?

Last Answer : No, this kid should be fine. Is the child vomiting a lot?

The following statement is true in relation to ‘drug toxicity’ and ‘poisoning’: A. The two terms are synonymous B. When a toxic effect requires specific treatment, it is called poisoning C. A toxic effect which endangers life by markedly affecting vital functions is called poisoning D. Toxicity is caused by drugs while poisoning is caused by other harmful chemicals

Description : The following statement is true in relation to drug toxicity' and poisoning': A. The two terms are synonymous B. When a toxic effect requires specific treatment, it is called poisoning C. ... is called poisoning D. Toxicity is caused by drugs while poisoning is caused by other harmful chemicals

Last Answer : C. A toxic effect which endangers life by markedly affecting vital functions is called poisoning

The following statement is true in relation to ‘drug toxicity’ and ‘poisoning’: A. The two terms are synonymous B. When a toxic effect requires specific treatment, it is called poisoning C. A toxic effect which endangers life by markedly affecting vital functions is called poisoning D. Toxicity is caused by drugs while poisoning is caused by other harmful chemicals

Description : The following statement is true in relation to drug toxicity' and poisoning': A. The two terms are synonymous B. When a toxic effect requires specific treatment, it is called poisoning C. ... is called poisoning D. Toxicity is caused by drugs while poisoning is caused by other harmful chemicals

Last Answer : C. A toxic effect which endangers life by markedly affecting vital functions is called poisoning

Consider the following statements (A–D) about organic farming. (A) Utilizes genetically modified crops like Bt cotton (B) Uses only naturally produced inputs like compost (C) Does not use pesticides and urea (D) Produces vegetables rich in vitamins and minerals Which of the above statements are correct? (a) B, C and D (b) C and D only (c) B and C only (d) A and B only

Description : Consider the following statements (A-D) about organic farming. (A) Utilizes genetically modified crops like Bt cotton (B) Uses only naturally produced inputs like compost (C) Does not use pesticides and urea (D) Produces vegetables ... C and D (b) C and D only (c) B and C only (d) A and B only

Last Answer : (c) B and C only

In industrial operations fluids with temperature less than __________ are set as the limit for waste heat recovery because of the risk of condensation of corrosive liquids a. 80C b. 100C c. 120C d. 200C

Description : In industrial operations fluids with temperature less than __________ are set as the limit for waste heat recovery because of the risk of condensation of corrosive liquids a. 80C b. 100C c. 120C d. 200C

Last Answer : 100C

The slow rate of decomposition of fallen logs in nature is due to their

Description : The slow rate of decomposition of fallen logs in nature is due to their

Last Answer : The slow rate of decomposition of fallen logs in nature is due to their A. Anaerobic environment ... C. Low moisture content D. Poor nitrogen content

The slow rate of decomposition of fallen logs in nature is due to their

Description : The slow rate of decomposition of fallen logs in nature is due to their

Last Answer : The slow rate of decomposition of fallen logs in nature is due to their A. Anaerobic environment ... C. Low moisture content D. Poor nitrogen content

Explain the disproportionation nature of decomposition of Hydrogen peroxide?

Description : Explain the disproportionation nature of decomposition of Hydrogen peroxide?

Last Answer : Ans. Decomposition of hydrogen peroxide produces water and oxygen. O.N Increases as well as decreases.

The slow rate of decomposition of fallen logs in nature is due to their (a) anaerobic environment around them (b) low cellulose content (c) low moisture content (d) poor nitrogen content.

Description : The slow rate of decomposition of fallen logs in nature is due to their (a) anaerobic environment around them (b) low cellulose content (c) low moisture content (d) poor nitrogen content.

Last Answer : (d) poor nitrogen content.