302 + Interview Questions in Inorganic Chemical Industries in Chemical Technology Page 1 InterviewSolution

1.	Which explosive corrodes most metal?(a) Smokeless powder(b) Black powder(c) HMTD(d) DynamiteI got this question in homework.My question comes from Inorganic Chemical topic in chapter Inorganic Chemical Industries of Chemical Technology
Answer» Right option is (c) HMTD Best explanation: HMTD ( hexamethylene-triperoxide DIAMINE) is an improvised explosives which corrodes most of metal because of the property of EXTREMELY sensitive HEAT, shock and FRICTION also.

Discussion

2.	Which of the following is the primary reason for applying fluidized bed technique in uranium gaseous conversion processes?(a) Highly turbulent mixing(b) Good heat transfer(c) Internal heat exchange surfaces(d) Closed systemThis question was posed to me in a job interview.This interesting question is from Inorganic Chemical in chapter Inorganic Chemical Industries of Chemical Technology
Answer» Correct choice is (d) Closed system The BEST I can explain: The PRIMARY REASON for applying fluidized bed technique in URANIUM gaseous conversion PROCESSES is, it being a closed system as uranium releases alpha radiation harmful to human body.

Discussion

3.	What is the disadvantage of vapour compression?(a) Less no of evaporator(b) Less energy requirements(c) High pressure steam(d) Use of inertI have been asked this question in homework.Question is from Inorganic Chemical in chapter Inorganic Chemical Industries of Chemical Technology
Answer» Correct option is (C) High pressure steam Best explanation: Disadvantages of vapour compression are high PRICED energy in the form of electricity or high pressure steam is NEEDED for OPERATING the COMPRESSOR.

Discussion

4.	Which of the following is a disadvantage of membrane cell process?(a) Asbestos emission(b) Mercury contamination(c) High purity of brine(d) High electrical energy consumptionThis question was posed to me in an interview for internship.This interesting question is from Inorganic Chemical topic in division Inorganic Chemical Industries of Chemical Technology
Answer» Correct answer is (c) High purity of brine For explanation I would say: Asbestos emission is a disadvantage of DIAPHRAGM CELL PROCESS. Mercury CONTAMINATION and High electrical energy consumption are disadvantages of mercury process. High purity of brine is a disadvantage of membrane cell process.

Discussion

5.	Which raw material mentioned below is not required in lime soda process?(a) Quicklime(b) Light soda ash(c) Alum(d) OilI have been asked this question during an online exam.Origin of the question is Inorganic Chemical topic in portion Inorganic Chemical Industries of Chemical Technology
Answer» The correct option is (d) Oil To elaborate: The three principal chemicals required for the lime-soda process are quicklime or HYDRATED lime, light soda ash contain (98% NA2CO3) and alum[Al2(SO4).xH2O]. SMALL amount of activated CARBON also required.

Discussion

6.	What is the distillation method of obtaining fresh water from saline waters?(a) Solvent extraction(b) Reverse osmosis(c) Vapor recompression(d) Hydrocarbon hydratesThis question was posed to me during an internship interview.Asked question is from Inorganic Chemical in division Inorganic Chemical Industries of Chemical Technology
Answer» Correct answer is (c) VAPOR recompression Easiest explanation: Evaporation or distillation method of obtaining FRESH water from saline waters are- Single STAGE flash, vapour recompression, multistage flash while FREEZING or crystallization process is indirect refrigeration and hydrocarbon hydrates.

Discussion

7.	What is the modification of the dual process?(a) Recovery of NH4Cl as co-product(b) Recovery of NH3 as co-product(c) Recovery of NaHCO3 as co-product(d) Recovery of NH34(NO3) as co-productThis question was posed to me in semester exam.My question comes from Inorganic Chemical topic in section Inorganic Chemical Industries of Chemical Technology
Answer» The correct ANSWER is (a) Recovery of NH4Cl as co-product Explanation: The PRINCIPAL modification of the DUAL process is the recovery of NH4Cl as a co-product rather than the LIBERATION of the contained ammonia for recycle as in the SOLVAY process.

Discussion

8.	Which one is dual process?(a) Na2CO3+NH4Cl(b) Na2CO3+NaCl(c) NH4Cl+Ca(OH)^2(d) CaCO3+NaClI have been asked this question in a national level competition.The doubt is from Inorganic Chemical topic in chapter Inorganic Chemical Industries of Chemical Technology
Answer» The correct choice is (a) Na2CO3+NH4Cl The explanation: Ammonium chloride and calcium HYDROXIDES REACTS in solvay PROCESS along with calcium carbonate and sodium chloride while sodium carbonate and ammonium chloride reacts in DUAL process.

Discussion

9.	Grignard reagent is used in production of tetra ethyl lead (TEL) by electro chemical process. Is the statement true/false?(a) False(b) TrueThe question was posed to me in examination.This question is from Inorganic Chemical in chapter Inorganic Chemical Industries of Chemical Technology
Answer» CORRECT CHOICE is (B) True The explanation: Ethyl magnesium chloride (C2H5 MGCL) is used in the production of tetra ethyl lead (TEL) by electro chemical process which means Grignard reagent is used.

Discussion

10.	Which type of rotary dryer is used in manufacture of sodium tri polyphosphate?(a) Rotary drum dryer(b) Indirect fired and cooled rotary dryer(c) Rotary vacuum dryers(d) Direct rotary dryersThe question was asked during an interview.Query is from Inorganic Chemical in section Inorganic Chemical Industries of Chemical Technology
Answer» Correct choice is (B) Indirect FIRED and cooled rotary dryer The best I can explain: The SODIUM tri polyphosphate SOLUTION is filtered, dried, cooled and annealed ALONG the length of the indirect fired and cooled rotary drier.

Discussion

11.	What is the chemical formula of super phosphate?(a) CaH4 (PO4)2(b) Ca3 (PO4)2(c) CaH4 (PO4)2∙CaSO4(d) (Ca3 (PO4)2)3∙CaF2The question was asked in an online quiz.The question is from Inorganic Chemical in division Inorganic Chemical Industries of Chemical Technology
Answer» The correct choice is (c) CaH4 (PO4)2∙CaSO4 Explanation: Chemical FORMULA of super phosphate formed by REACTION of phosphate ROCK with sulfuric acid CONTAINING 16-20%P2O5is CaH4 (PO4)2∙CaSO4.

Discussion

12.	Which solvent is used as make-up for the extraction ofH3PO4 from CaCl2solution?(a) Acetone(b) Benzene(c) Water(d) Amyl alcoholThis question was posed to me during a job interview.I'm obligated to ask this question of Inorganic Chemical topic in chapter Inorganic Chemical Industries of Chemical Technology
Answer» CORRECT answer is (d) AMYL alcohol The EXPLANATION is: Butanol or amyl alcohol is generally used as make-up SOLVENT for the EXTRACTION ofH3PO4from CaCl2solution.

Discussion

13.	Ortho phosphoric acid is completely miscible with water.(a) False(b) TrueI have been asked this question in final exam.The doubt is from Inorganic Chemical in portion Inorganic Chemical Industries of Chemical Technology
Answer» RIGHT choice is (b) True The EXPLANATION is: PHOSPHORIC acid is completely miscible with water at 42.6°C, as it mixes with water in all PROPORTIONS at 42.6°C.

Discussion

14.	Which component of fertilizer is used in stimulates early growth purpose?(a) Phosphorus(b) Nitrogen(c) Potassium(d) OxygenThis question was addressed to me during an online interview.I need to ask this question from Inorganic Chemical in chapter Inorganic Chemical Industries of Chemical Technology
Answer» The correct answer is (a) Phosphorus To explain I would say: Phosphorus stimulates early growth and accelerates seeding or FRUIT formation in later stages of growth while POTASSIUM is essential to development of the STARCHES of potatoes and GRAINS.

Discussion

15.	Ammonium nitrate is used as an intermediate in manufacture of which of the following?(a) Nitrolime(b) Urea(c) Ammonia(d) Nitric acidThe question was asked during an online interview.Query is from Inorganic Chemical in portion Inorganic Chemical Industries of Chemical Technology
Answer» CORRECT choice is (a) Nitrolime Easy explanation: The USE of ammonium nitrate as a fertilizer is not much appreciated due to its too high leaching rate on soil application it is therefore SENT to the industry for production of nitrolime. In other COMPOUNDS AMMONIA is generally used as the feedstock.

Discussion

16.	Which are the factors favoured in the reaction kinetics in the NH3 oxidation stage?(a) High temperature, low pressure(b) Low temperature, high pressure(c) Low temperature, low pressure(d) High temperature, high pressureThis question was posed to me by my college director while I was bunking the class.My question is based upon Inorganic Chemical topic in portion Inorganic Chemical Industries of Chemical Technology
Answer» The CORRECT option is (d) HIGH temperature, high pressure Explanation: In ammonia oxidation process, the reaction to form NO is favoured by INCREASING temperature until an optimum is reached which increases with HIGHER gas velocities. Increasing pressure favours physical absorption rates and shifts chemical EQUILIBRIUM to produce higher acid strengths.

Discussion

17.	Which Major Engineering problem is associated with Frasch process?(a) Grinding(b) Corrosion(c) Final clean-up of stack gases(d) Pyrites ore beneficiationI had been asked this question in quiz.This interesting question is from Inorganic Chemical topic in chapter Inorganic Chemical Industries of Chemical Technology
Answer» The correct option is (B) Corrosion Best explanation: SULFUR contain Shipment-insulated Barges and tank CARS EASILY GOT corroded in the storage and handling process .Grinding and pyrites ore beneficiation are the major engineering problem of Finnish process, final clean-up of stock gas is related to oxidation reduction of H2S .

Discussion

18.	Ammonia production is favoured by which following factor?(a) High temperature and low pressure(b) Low temperature and high pressure(c) Low temperature and low pressure(d) High temperature and high pressureI got this question during an interview.Enquiry is from Inorganic Chemical topic in division Inorganic Chemical Industries of Chemical Technology
Answer» The CORRECT CHOICE is (b) Low temperature and high pressure To explain I WOULD say: From the equilibrium standpoint this ammonia production reaction is favoured by low temperature and high pressure according to Le chatelier’s principle. At low temperature the RATE of backward reaction will more than forward reaction.

Discussion

19.	Into which of the mentioned equipment are compressed NH3 and CO2 added for production of urea by Ammonia carbamate decomposition?(a) CSTR(b) Parr Reactor(c) Autoclave(d) Plug type reactorThe question was asked during a job interview.This interesting question is from Inorganic Chemical in portion Inorganic Chemical Industries of Chemical Technology
Answer» CORRECT answer is (C) AUTOCLAVE Explanation: Ammonia and CO2 are compressed separately and added to a high-pressure autoclave, which is WATER -cooled.

Discussion

20.	Which of the following mentioned is a source of H2 to produce ammonia by Haber’s process?(a) Producer gas(b) Water gas(c) Synthesis gas(d) None of the mentionedI had been asked this question in class test.Question is taken from Inorganic Chemical in section Inorganic Chemical Industries of Chemical Technology
Answer» Right CHOICE is (C) Synthesis gas For explanation I WOULD say: Synthesis gas is used to obtainH2 required for the process and N2 from air ADDITION in synthesis gas process.

Discussion

21.	What are iron pyrites also know as?(a) Sulfides of iron(b) Silicates of Alumina(c) Aluminates of Magnesium(d) Sulfides of CalciumI had been asked this question in an internship interview.My question is taken from Inorganic Chemical in division Inorganic Chemical Industries of Chemical Technology
Answer» The correct OPTION is (a) Sulfides of iron To ELABORATE: Iron PYRITES has CHEMICAL FORMULA FeS that is Sulfides of Iron.

Discussion

22.	Which of the mentioned is the basic raw material for the production of sulfur?(a) CaO(b) Asbestos(c) Lead(d) SulfurThe question was posed to me in my homework.My question is based upon Inorganic Chemical topic in division Inorganic Chemical Industries of Chemical Technology
Answer» The correct choice is (d) Sulfur The EXPLANATION is: Sulfur is one of the basic RAW MATERIALS for the production of sulfuric ACID.

Discussion

23.	Which one mentioned below is not a raw material used in the Portland cement production?(a) Clay(b) Limestone(c) Gypsum(d) QuicklimeThe question was asked by my school teacher while I was bunking the class.Origin of the question is Inorganic Chemical topic in section Inorganic Chemical Industries of Chemical Technology
Answer» CORRECT ANSWER is (d) Quicklime The best I can explain: Quantitative requirements of PORTLAND cement production are- clay-0.1 to 0.3 TON, limestone 1.2to1.3 TONE, gypsum- 0.03 to 0.05, coal-0.25 to 0.40 and water is 3 tons required.

Discussion

24.	Which of the following is a disadvantage of membrane cell process?(a) Asbestos emission(b) Mercury contamination(c) High purity of brine(d) High electrical energy consumptionI had been asked this question in exam.Question is taken from Inorganic Chemical in section Inorganic Chemical Industries of Chemical Technology
Answer»

Discussion

25.	Why minor quantities of Na2CO3 required in electrolysis process?(a) For Cl2 drying(b) For high purity brine(c) For salt purification(d) For high purity depleted brineThis question was addressed to me in examination.I need to ask this question from Inorganic Chemical topic in division Inorganic Chemical Industries of Chemical Technology
Answer» The correct choice is (c) For salt purification To elaborate: ELECTROLYSIS PROCESS of chlorine PRODUCTION contains diaphragm cell and MERCURY cell. In this process,minor quantities of Na2CO3 and NaOH required for the salt purification while H2SO4 is required for Cl2 drying.

Discussion

26.	Shorting of cell in production of tetra ethyl lead (TEL) is prevented by adding __________(a) Excess Grignard reagent(b) Excess C2H5Cl(c) Excess Mg(d) Excess MgCl2This question was posed to me by my school principal while I was bunking the class.Query is from Inorganic Chemical in section Inorganic Chemical Industries of Chemical Technology
Answer» Correct option is (b) EXCESS C2H5Cl To explain I would say: Eliminated magnesium metal is deposited at CATHODE BRIDGING the gap between electrodes which leads to shorting of cell. Hence excess C2H5Cl is added as REACTS with magnesium forming Grignard reagent.

Discussion

27.	Which of the following statement is true regarding efficiencies of fuel cell?(a) ƞ0 = ƞr(b) ƞ0 > ƞr(c) ƞ0 < ƞr(d) ƞ0 ≤ ƞrThis question was addressed to me in an internship interview.This intriguing question comes from Inorganic Chemical topic in portion Inorganic Chemical Industries of Chemical Technology
Answer» Correct answer is (c) ƞ0 < ƞr Best EXPLANATION: ƞ0 < ƞr. ƞ0 is the overall efficiency of the FUEL cell which includes incorrect ∆H at the electrodes, I^2 Rlosses from cell resistances and polarizability. Hence overall efficiency is always less than the reversible or IDEAL efficiency.

Discussion

28.	Which raw material mentioned below is not used in the production of tetraethyl-Lead?(a) Grignard reagent(b) Ethyl chloride(c) Lead metal(d) Ethyl alcoholThis question was addressed to me at a job interview.This interesting question is from Inorganic Chemical in section Inorganic Chemical Industries of Chemical Technology
Answer» Right OPTION is (d) Ethyl alcohol Easy explanation: Ethyl MAGNESIUM chloride (GRIGNARD reagent), ethyl chloride and lead metals are the necessary raw MATERIALS for the production of tetraethyl-lead where lead metal is WHOLLY consumed and need to be recycled.

Discussion

29.	Which process does not use air expansion for refrigeration?(a) Claude operated process(b) Elliott process(c) Turbo-reciprocating process(d) Liquefaction processI had been asked this question in class test.My doubt is from Inorganic Chemical in section Inorganic Chemical Industries of Chemical Technology
Answer» RIGHT CHOICE is (b) Elliott process To explain I would SAY: A novel process (elliott) does not use air expansion for refrigeration but SETS up HEAT exchange with nitrogen coolant in strictly recuperative heat exchanger. Claude-operated process uses adiabatic expansion of 70-80% of the incoming air.

Discussion

30.	What is the use of ammonia in Linde cycle?(a) Precooling(b) Liquefaction(c) Refrigeration(d) Compression of feed streamThis question was posed to me in semester exam.The question is from Inorganic Chemical in chapter Inorganic Chemical Industries of Chemical Technology
Answer» Right choice is (a) Precooling The EXPLANATION is: Linde cycle is the USE of ammonia for precooling of the FEED STREAM. LIQUEFACTION is possible by compression or a combination of compression and cooling.

Discussion

31.	Why dry process is inherently dangerous in the production of acetylene?(a) Explosion(b) Fire(c) Hot spot(d) Poisonous gasI have been asked this question in an online interview.I'd like to ask this question from Inorganic Chemical in chapter Inorganic Chemical Industries of Chemical Technology
Answer» The correct OPTION is (C) Hot spot The explanation is: The dry process is INHERENTLY more dangerous in production of acetylene because of temperature control in the generator and it particularly regards as hot spot. Thus, average generator conditions are maintained below 150 Celsius and 30 CM of water pressure.

Discussion

32.	Which process is used in order to concentrate nitric acid?(a) Concentration by H3PO4(b) Concentration by Mg(NO3)^2(c) Concentration by Ca(NO3)^2(d) Concentration by Ba(NO3)^2This question was addressed to me in examination.My doubt is from Inorganic Chemical in division Inorganic Chemical Industries of Chemical Technology
Answer» Right answer is (b) Concentration by Mg(NO3)^2 For explanation I would SAY: Magnesium nitrate solution containing 70-75% Mg(NO3)^2 is fed to a dehydrating tray tower ALONG with dilute HNO3 from the absorption system. The salt solution act as an EXTRACTIVE distillation AGENT, removing water at 100 C and the solution is again re- concentrated by evaporation.

Discussion

33.	Which prevention can be taken to avoid the formation of biuret?(a) Temperature > melting point(b) Temperature < melting point(c) Temperature > boiling point(d) Temperature < boiling pointThis question was posed to me in my homework.The question is from Inorganic Chemical topic in chapter Inorganic Chemical Industries of Chemical Technology
Answer» Right option is (a) Temperature > melting point To ELABORATE: In urea production to avoid formation of biuret in PERCENTAGE > 1%, the temperature must be kept just above the melting point for processing time of 1-2 seconds in this phase of OPERATION.

Discussion

34.	What kind of reaction takes place when compressed ammonia and CO2 are reacted?(a) Highly Endothermic(b) Exothermic(c) Endothermic(d) None of the mentionedThis question was posed to me by my college director while I was bunking the class.The doubt is from Inorganic Chemical topic in chapter Inorganic Chemical Industries of Chemical Technology
Answer» CORRECT CHOICE is (b) Exothermic Best explanation: When ammonia and CO2 are compressed separately and reacted, reaction is a exothermic in NATURE with ΔΗ^o = -37.4 KCAL.

Discussion

35.	What is the highest end use of urea?(a) solid fertilizer(b) liquid fertilizer(c) formaldehyde resin(d) melamineThis question was posed to me in an international level competition.This interesting question is from Inorganic Chemical in section Inorganic Chemical Industries of Chemical Technology
Answer» Right OPTION is (a) solid fertilizer Best explanation: BASICALLY, urea is USED as solid fertilizer in the highest AMOUNT (53%), 31% is used as liquid fertilizer and rest are the miscellaneous application such as formaldehyde resins and melamine.

Discussion

36.	To what temperature is the hydrocarbon feed and oxygen preheated in one stage burner?(a) 500 Celsius(b) 550 Celsius(c) 600 Celsius(d) 650 CelsiusThis question was posed to me during an interview for a job.My doubt stems from Inorganic Chemical topic in chapter Inorganic Chemical Industries of Chemical Technology
Answer» The correct CHOICE is (b) 550 Celsius To elaborate: None.

Discussion

37.	Which of the mentioned statements regarding the solubility of ammonia is true?(a) Insoluble in water(b) Highly Soluble in water(c) Soluble in Chloroform(d) Highly Soluble in water and soluble in ChloroformThis question was posed to me during an internship interview.I need to ask this question from Inorganic Chemical in chapter Inorganic Chemical Industries of Chemical Technology
Answer» Correct choice is (d) Highly Soluble in water and soluble in Chloroform The EXPLANATION is: AMMONIA is highly soluble in water and is soluble in solvents like chloroform, ETHER, ethanol, and methanol.

Discussion

38.	If the sulfur contains Arsenic which attacks the Vanadium or Platinum catalyst during contact process. Using which of the following can the Arsenic be removed.(a) Milk of lime(b) Milk of magnesia(c) CaO(d) Salts of SodiumI had been asked this question in semester exam.Asked question is from Inorganic Chemical topic in section Inorganic Chemical Industries of Chemical Technology
Answer» The correct CHOICE is (a) Milk of lime Easiest EXPLANATION: ARSENIC in the sulfur can be removed by contacting MOLTEN sulfur with milk of lime.

Discussion

39.	What is ‘hydrazine’?(a) Hypergolic material(b) Non-hypergolic material(c) Principal oxidizers(d) Principal fuelsThe question was asked in class test.The origin of the question is Inorganic Chemical in section Inorganic Chemical Industries of Chemical Technology
Answer» RIGHT option is (d) Principal fuels Explanation: In liquid propellants, KEROSENE (JP-4), hydrazine,liquid H2 are USED as principal fuels while H2O2, HNO3, N2O4, liquid O2 and liquid F2 are used as principal oxidizers.

Discussion

40.	Inhibitor used in the formation of chloro amine is ___________(a) Aspirin(b) Nitric oxide(c) Glycol(d) GelatinThis question was addressed to me in an online interview.I want to ask this question from Inorganic Chemical topic in portion Inorganic Chemical Industries of Chemical Technology
Answer» The correct choice is (d) Gelatin Best explanation: Aqueous AMMONIA reacts with SODIUM hypochlorite in 3:1 ratio to produce chloro amine and sodium HYDROXIDE in PRESENCE of GLUE or gelatin inhibitor.

Discussion

41.	Which of the following is not used as raw material for production of boranes?(a) Methanol(b) Sodium borohydride(c) Glycol ether(d) Mineral oilThe question was asked in homework.Origin of the question is Inorganic Chemical topic in portion Inorganic Chemical Industries of Chemical Technology
Answer» Right choice is (B) Sodium borohydride To elaborate: Methanol, boric acid, sodium metal, industrial grade hydrogen, BORON tri fluoride or tri chloride, GLYCOL ether, and MINERAL oil. Sodium borohydride is the PRODUCT formed during the production of boranes.

Discussion

42.	High concentration of NaOH is produced by _____________(a) Mebrane cell process(b) Diaphragm cell process(c) Mercury cell process(d) Chemical processThe question was posed to me in an interview for job.I'm obligated to ask this question of Inorganic Chemical topic in portion Inorganic Chemical Industries of Chemical Technology
Answer» CORRECT OPTION is (C) Mercury cell process Explanation: 10-12% NaOH is PRODUCED by diaphragm cell which is concentrated to 50%NaOH. 30-33% NaOH is produced by membrane process concentrated to 50% NaOH. 70% NaOH is produced in mercury cell process.

Discussion

43.	Which one mentioned below is one of commercial explosives?(a) HMTD(b) Dynamite(c) RDX(d) C4The question was posed to me in unit test.I need to ask this question from Inorganic Chemical topic in portion Inorganic Chemical Industries of Chemical Technology
Answer» The correct option is (B) Dynamite Explanation: THREE types of explosives are available- military explosives, commercial explosives and improvised explosives. EXAMPLES of commercial explosives are – ANAL, ANFO, black powder, dynamite, UREA nitrate, TNT etc.

Discussion

44.	What is ‘Epsom salt’?(a) MgSO4.7H2O(b) MgSO4.2H2O(c) MgCO2.CaCO3(d) MgCO2This question was posed to me in exam.I'm obligated to ask this question of Chemical From Sea in division Inorganic Chemical Industries of Chemical Technology
Answer» Right CHOICE is (a) MgSO4.7H2O Easy explanation: Epsom salt is MgSO4.7H2O. It is made by treating magnesium carbonate or HYDROXIDE with sulfuric acid. MgCO2.CaCO2 is DOLOMITE and MgCO2 is magnetite.

Discussion

45.	What is the amount of CO2 present in the raw materials for production of low purity tonnage oxygen?(a) 0.01-0.03(b) 0.02-0.07(c) 0.94(d) 20.97The question was posed to me by my college professor while I was bunking the class.I need to ask this question from Inorganic Chemical in chapter Inorganic Chemical Industries of Chemical Technology
Answer» The correct ANSWER is (b) 0.02-0.07 Best EXPLANATION: The raw materials for PRODUCTION of LOW purity tonnage oxygen usually contain 20.97 oxygen, 0.01-0.03 water, 0.94 oxygen and 0.02-0.07 CO2.

Discussion

46.	Which process is involved in N2 fixation from air?(a) Wisconsin process(b) 2 NaNO3 + H2SO4 process(c) Ammonia oxidation process(d) Fission fragments processThe question was posed to me by my college professor while I was bunking the class.My query is from Inorganic Chemical in section Inorganic Chemical Industries of Chemical Technology
Answer» RIGHT OPTION is (a) WISCONSIN process For explanation I would say: In wisconsin process production of NO and NO2 by high temperature(2,200 C) reaction USING air in gas-fired pebble bed heater followed by quick quench. In fission fragments process air EXPOSED to radiation in a nuclear reactor to form NO.

Discussion

47.	Which process is associated with urea production?(a) High pressure stripping operation(b) Low temperature stripping operation(c) Low pressure stripping operation(d) Low temperature stripping operationI got this question in an interview for job.This interesting question is from Inorganic Chemical in chapter Inorganic Chemical Industries of Chemical Technology
Answer» The correct choice is (c) Low pressure stripping operation Explanation: In AMMONIUM carbonate PROCESS, urea is FORMED by dehydration in a low-pressure stripping operation. In this process ammonia and CO2 are COMPRESSED and reacted at particular operating conditions.

Discussion

48.	Acetylene and its dimer are absorbed are absorbed into which of the following mentioned?(a) Cold dimethyl formamide(b) Hot dimethyl formamide(c) Cold sodium amalgam(d) Hot sodium amalgamThis question was posed to me during an online exam.I need to ask this question from Inorganic Chemical in section Inorganic Chemical Industries of Chemical Technology
Answer» RIGHT OPTION is (a) Cold dimethyl formamide The best EXPLANATION: ACETYLENE and its DIMER are absorbed in cold dimethyl formamide.

Discussion

49.	What is the melting point of Rhombic crystal sulfur?(a) 111.8 Celsius(b) 112.8 Celsius(c) 113.8 Celsius(d) 114.8 CelsiusI have been asked this question during an online exam.This key question is from Inorganic Chemical in chapter Inorganic Chemical Industries of Chemical Technology
Answer» The correct option is (B) 112.8 Celsius To EXPLAIN I would say: The melting point of RHOMBIC CRYSTAL SULFUR is 112.8.

Discussion

50.	What is the property of low explosives?(a) Reaction rates are high(b) Requires an initiator(c) Reaction rates are slow(d) Yield at low flame temperatureThis question was posed to me in quiz.Origin of the question is Inorganic Chemical in division Inorganic Chemical Industries of Chemical Technology
Answer» The correct answer is (C) REACTION rates are slow The explanation: Low EXPLOSIVES are that material whose reaction rates are relatively slow and controllable. Examples: various propellants such as COLLOIDAL cellulose nitrate, black powder, CHARCOAL etc.

Discussion

Explore topic-wise InterviewSolutions in .

Which explosive corrodes most metal?(a) Smokeless powder(b) Black powder(c) HMTD(d) DynamiteI got this question in homework.My question comes from Inorganic Chemical topic in chapter Inorganic Chemical Industries of Chemical Technology

What is the disadvantage of vapour compression?(a) Less no of evaporator(b) Less energy requirements(c) High pressure steam(d) Use of inertI have been asked this question in homework.Question is from Inorganic Chemical in chapter Inorganic Chemical Industries of Chemical Technology

Which raw material mentioned below is not required in lime soda process?(a) Quicklime(b) Light soda ash(c) Alum(d) OilI have been asked this question during an online exam.Origin of the question is Inorganic Chemical topic in portion Inorganic Chemical Industries of Chemical Technology

Which one is dual process?(a) Na2CO3+NH4Cl(b) Na2CO3+NaCl(c) NH4Cl+Ca(OH)^2(d) CaCO3+NaClI have been asked this question in a national level competition.The doubt is from Inorganic Chemical topic in chapter Inorganic Chemical Industries of Chemical Technology

Grignard reagent is used in production of tetra ethyl lead (TEL) by electro chemical process. Is the statement true/false?(a) False(b) TrueThe question was posed to me in examination.This question is from Inorganic Chemical in chapter Inorganic Chemical Industries of Chemical Technology

What is the chemical formula of super phosphate?(a) CaH4 (PO4)2(b) Ca3 (PO4)2(c) CaH4 (PO4)2∙CaSO4(d) (Ca3 (PO4)2)3∙CaF2The question was asked in an online quiz.The question is from Inorganic Chemical in division Inorganic Chemical Industries of Chemical Technology

Ortho phosphoric acid is completely miscible with water.(a) False(b) TrueI have been asked this question in final exam.The doubt is from Inorganic Chemical in portion Inorganic Chemical Industries of Chemical Technology

Which component of fertilizer is used in stimulates early growth purpose?(a) Phosphorus(b) Nitrogen(c) Potassium(d) OxygenThis question was addressed to me during an online interview.I need to ask this question from Inorganic Chemical in chapter Inorganic Chemical Industries of Chemical Technology

Ammonium nitrate is used as an intermediate in manufacture of which of the following?(a) Nitrolime(b) Urea(c) Ammonia(d) Nitric acidThe question was asked during an online interview.Query is from Inorganic Chemical in portion Inorganic Chemical Industries of Chemical Technology

What are iron pyrites also know as?(a) Sulfides of iron(b) Silicates of Alumina(c) Aluminates of Magnesium(d) Sulfides of CalciumI had been asked this question in an internship interview.My question is taken from Inorganic Chemical in division Inorganic Chemical Industries of Chemical Technology

Which of the mentioned is the basic raw material for the production of sulfur?(a) CaO(b) Asbestos(c) Lead(d) SulfurThe question was posed to me in my homework.My question is based upon Inorganic Chemical topic in division Inorganic Chemical Industries of Chemical Technology

What is the use of ammonia in Linde cycle?(a) Precooling(b) Liquefaction(c) Refrigeration(d) Compression of feed streamThis question was posed to me in semester exam.The question is from Inorganic Chemical in chapter Inorganic Chemical Industries of Chemical Technology

Why dry process is inherently dangerous in the production of acetylene?(a) Explosion(b) Fire(c) Hot spot(d) Poisonous gasI have been asked this question in an online interview.I'd like to ask this question from Inorganic Chemical in chapter Inorganic Chemical Industries of Chemical Technology

What is the highest end use of urea?(a) solid fertilizer(b) liquid fertilizer(c) formaldehyde resin(d) melamineThis question was posed to me in an international level competition.This interesting question is from Inorganic Chemical in section Inorganic Chemical Industries of Chemical Technology

What is ‘hydrazine’?(a) Hypergolic material(b) Non-hypergolic material(c) Principal oxidizers(d) Principal fuelsThe question was asked in class test.The origin of the question is Inorganic Chemical in section Inorganic Chemical Industries of Chemical Technology

Inhibitor used in the formation of chloro amine is ___________(a) Aspirin(b) Nitric oxide(c) Glycol(d) GelatinThis question was addressed to me in an online interview.I want to ask this question from Inorganic Chemical topic in portion Inorganic Chemical Industries of Chemical Technology

Which of the following is not used as raw material for production of boranes?(a) Methanol(b) Sodium borohydride(c) Glycol ether(d) Mineral oilThe question was asked in homework.Origin of the question is Inorganic Chemical topic in portion Inorganic Chemical Industries of Chemical Technology

Which one mentioned below is one of commercial explosives?(a) HMTD(b) Dynamite(c) RDX(d) C4The question was posed to me in unit test.I need to ask this question from Inorganic Chemical topic in portion Inorganic Chemical Industries of Chemical Technology

What is ‘Epsom salt’?(a) MgSO4.7H2O(b) MgSO4.2H2O(c) MgCO2.CaCO3(d) MgCO2This question was posed to me in exam.I'm obligated to ask this question of Chemical From Sea in division Inorganic Chemical Industries of Chemical Technology

What is the melting point of Rhombic crystal sulfur?(a) 111.8 Celsius(b) 112.8 Celsius(c) 113.8 Celsius(d) 114.8 CelsiusI have been asked this question during an online exam.This key question is from Inorganic Chemical in chapter Inorganic Chemical Industries of Chemical Technology

What is the property of low explosives?(a) Reaction rates are high(b) Requires an initiator(c) Reaction rates are slow(d) Yield at low flame temperatureThis question was posed to me in quiz.Origin of the question is Inorganic Chemical in division Inorganic Chemical Industries of Chemical Technology