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Home⇒ Engineering⇒
Fertiliser technology
1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
Q41 ⇒ The composition of fresh feed to the high temperature, high pressure urea autoclave is excess liquid ammonia and compressed CO2 gas. [other wrong options] [Discuss in forum] excess liquid ammonia and liquefied CO2. liquid ammonia and excess compressed CO2. compressed ammonia gas and excess compressed CO2. |
Q42 ⇒ Dehydration of ammonium carbamate to yield urea is a/an __________ reaction. endothermic [other wrong options] [Discuss in forum] exothermic autocatalytic catalytic |
Q43 ⇒ An increase in the NH3/CO2 ratio in urea manufacture results in increased degree of conversion of CO2 to urea. [other wrong options] [Discuss in forum] decreased degree of conversion of NH3 to urea. decreased yield of urea. decreased specific volume of molten mass. |
Q44 ⇒ Pick out the wrong statement. Ammonium nitrate fertiliser is obtained as a by-product in an integrated steel plant having by-product coke ovens. [other wrong options] [Discuss in forum] 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 or nitrate ions and forms amino acids. Calcium present in the fertiliser helps in correcting the soil acidity. Particle size range of a good grannular fertiliser is 10-15 mesh and it contains less moisture as compared to finely divided powder form of fertiliser. |
Q45 ⇒ Nitric acid is produced on commercial scale in a fertiliser plant by oxidation of ammonia. [other wrong options] [Discuss in forum] CaNO3 + H2SO4 reaction. passing air through high voltage electric arc. none of these. |
Q46 ⇒ Raw materials for nitric acid manufacture are anhydrous ammonia, air and water. [other wrong options] [Discuss in forum] hydrogen peroxide, air and water. anhydrous ammonia and air. wet ammonia, air and water. |
Q47 ⇒ Ammonia synthesis gas is produced from natural gas by steam reforming [other wrong options] [Discuss in forum] thermal cracking partial oxidation hydrogenation |
Q48 ⇒ Ammonium nitrate (a fertiliser) is coated with limestone powder to avoid the risk of explosion. [other wrong options] [Discuss in forum] increase its nitrogen content. cut down its production cost. add extra nutrient as fertiliser. |
Q49 ⇒ Steam reforming of naphtha is a source of hydrogen production for nitrogeneous fertiliser industry. What is the usual ratio of steam to carbon maintained in the process of steam reforming of naphtha ? 3.5:1 [other wrong options] [Discuss in forum] 1.5:1 0.417361111111111 0.625694444444444 |
Q50 ⇒ Calcium ammonium nitrate (CAN) is a complex fertiliser [other wrong options] [Discuss in forum] a mixed fertiliser a straight fertiliser not a fertiliser ; it is an explosive |
Q51 ⇒ H3PO4 is the chemical formula of __________ phosphoric acid. ortho [other wrong options] [Discuss in forum] pyro meta none of these |
Q52 ⇒ Ammonium sulphate can be produced by reacting gypsum with ammonium carbonate [other wrong options] [Discuss in forum] ammonia nitric acid none of these |
Q53 ⇒ Ammonium phosphate is a __________ fertiliser. mixed [other wrong options] [Discuss in forum] nitrogenous phosphatic complex |
Q54 ⇒ Sodium tri poly phosphate (STPP) is chemically represented as Na5P3O10 [other wrong options] [Discuss in forum] Na4P3O8 Na3P4O6 Na2PO4 |
Q55 ⇒ Promoter used in NH3 synthesis catalyst is V2O5 [other wrong options] [Discuss in forum] K2O SiO3 U2O3 |
Q56 ⇒ Pick out the wrong statement. Direct use of liquid ammonia as a fertiliser for a tropical country like India is suitable. [other wrong options] [Discuss in forum] Dehydration of ammonium carbamate to produce urea is endothermic. Gypsum (CaSO4. 2H2O) is obtained as a by-product in the wet process for manufacture of ortho-phosphoric acid. Phosphate rock when reacted with dilute H2SO4 produces superphosphate. |
Q57 ⇒ Reaction of calcium fluorapatite with sulphuric acid produces simple superphosphate. [other wrong options] [Discuss in forum] ortho-phosphoric acid. triple superphosphate. red phosphorous. |
Q58 ⇒ Triple superphosphate is chemically represented as CaF2.3Ca3(PO4)2 [other wrong options] [Discuss in forum] 3Ca3(PO4)2 Ca(PO3)2 Ca(H2PO4)2 |
Q59 ⇒ In the manufacture of H3 PO4 (ortho), ; strong H2 SO4 leaching wet process as compared to electric furnace process produces lower purity acid. [other wrong options] [Discuss in forum] uses lower grade phosphate rock. requires lower capital investment in the plant. is very costly. |
Q60 ⇒ Catalyst used in desulphurisation of naphtha is Co-Mo [other wrong options] [Discuss in forum] Pt-Rh silica gel nickel |
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