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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. |
Q21 ⇒ Catalytic ammonia synthesis reaction as in Haber's process is exothermic [other wrong options] [Discuss in forum] endothermic irreversible none of these |
Q22 ⇒ Pick out the wrong statement. All the nitrogenous fertilisers are not soluble in water. [other wrong options] [Discuss in forum] A straight fertiliser contains only one nutrient. Calcium cynamide is used as weed killer in onion fields. The phosphorous nutrient makes the plant stem stronger and increases its branches. |
Q23 ⇒ Pick out the wrong statement. Red phosphorous is the most reactive allotropic form of phosphorous. [other wrong options] [Discuss in forum] Green acid' is the other name of phosphoric acid produced by the reaction of phosphate rock & sulphuric acid. Chemically unreactive nature of red phosphorous is due to its polymeric structure. Red phosphorous, which is used in the manufacture of safety matches, is converted into white phosphorous by vaporisation followed by condensation. |
Q24 ⇒ Which of the following does not come under the category of 'secondary nutrient' for plant growth? Oxygen [other wrong options] [Discuss in forum] Calcium Magnesium Sulphur |
Q25 ⇒ Urea is a __________ fertiliser. nitrogenous [other wrong options] [Discuss in forum] potassic phosphatic none of these |
Q26 ⇒ P2O5 content in triple superphosphate is about __________ percent. 42-50 [other wrong options] [Discuss in forum] 15-20 85-90 70-75 |
Q27 ⇒ Electric process as compared to wet process (for the manufacture of phosphoric acid) is used less frequently. [other wrong options] [Discuss in forum] can use only high grade phosphate rock. produces a valuable by-product called gypsum. is weak acid process. |
Q28 ⇒ Which fertiliser is made (using coke oven gas) in by products plant of an integrated steel plant ? Ammonium sulphate [other wrong options] [Discuss in forum] Urea CAN Superphosphate |
Q29 ⇒ The essential ingradient of all the synthesis gas is H2 [other wrong options] [Discuss in forum] O2 CO2 N2 |
Q30 ⇒ Monte catini process is used for the manufacture of urea [other wrong options] [Discuss in forum] nitric acid phosphoric acid calcium ammonium nitrate (CAN) |
Q31 ⇒ Naphtha in a fertiliser plant is used as a source of H2 [other wrong options] [Discuss in forum] fuel N2 O2 |
Q32 ⇒ NPK fertiliser is a __________ fertiliser. mixed [other wrong options] [Discuss in forum] complex nitrogenous phosphatic |
Q33 ⇒ Ammonia synthesis reaction is exothermic [other wrong options] [Discuss in forum] endothermic autocatalytic none of these |
Q34 ⇒ Which of the following fertilisers contains the least percentage of nitrogen? Ammonium phosphate [other wrong options] [Discuss in forum] Liquid ammonia Urea Ammonium sulphate |
Q35 ⇒ Biuret formation in urea is kept at minimum (< 1 %), because it is toxic and harmful to some crops. [other wrong options] [Discuss in forum] corrosive in nature. helpful in decomposition of urea. explosive in nature. |
Q36 ⇒ Which of the following is the costliest source of hydrogen needed for ammonia manufacture under Indian condition ? Electrolysis of water. [other wrong options] [Discuss in forum] Cryogenic removal of H2 from coke oven gas. Steam reforming of naphtha. Natural gas cracking. |
Q37 ⇒ Raw materials for urea production are CO2, H2 and N2 [other wrong options] [Discuss in forum] CO2 and N2 NH3 and CO HNO3 and CaCO3 |
Q38 ⇒ Leaching of phosphate rock by strong __________ acid produces phosphoric acid. either (a) or (b) [other wrong options] [Discuss in forum] sulphuric hydrochloric neither (a) nor (b) |
Q39 ⇒ Which of the following is a natural inorganic fertiliser ? Chile salt petre [other wrong options] [Discuss in forum] Oilcake Gobar mannure None of these |
Q40 ⇒ In the manufacture of urea, the intermediate chemical formed is ammonium carbamate [other wrong options] [Discuss in forum] biuret ammonium carbonate none of these |
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