Description : A phosphatic fertiliser contains 16% P2O5 . It could be (A) Dicalcium phosphate (B) Superphosphate (C) Triple superphosphate (D) None of these
Last Answer : (B) Superphosphate
Description : Potassic fertiliser is graded based on its __________ content. (A) KCl (B) K2O (C) KNO3 (D) K2SO4
Last Answer : (B) K2O
Description : ________ content of the phosphate rock is the pollutant of primary interest in a phosphatic fertiliser plant. (A) Calcium (B) Fluorine (C) Phosphorous (D) Sulphur
Last Answer : (B) Fluorine
Description : The substance used as a smoke screen in warfare is (A) C2H2 (B) SiCl4 (C) P2O5 (D) PCl5
Last Answer : Option B
Description : Urea is a __________ fertiliser. (A) Nitrogenous (B) Potassic (C) Phosphatic (D) None of these
Last Answer : (A) Nitrogenous
Description : NPK fertiliser is a __________ fertiliser. (A) Complex (B) Mixed (C) Nitrogenous (D) Phosphatic
Last Answer : (B) Mixed
Description : Ammonium phosphate is a __________ fertiliser. (A) Nitrogenous (B) Phosphatic (C) Complex (D) Mixed
Last Answer : (D) Mixed
Description : The most suitable fertiliser for accelerating seeding or fruit formation in later stages of plant growth is __________ fertiliser. (A) Nitrogenous (B) Phosphatic (C) Potassic (D) None of these
Description : Acetamide can be converted into methylamine by (a) P2O5 (b) Br2/NaOH (c) PCl5 (d) LiAlH4
Last Answer : Br2/NaOH
Description : Base suspension fertiliser essentially contains (A) 13% N2 and 43% P2O5 (B) 43% N2 and 13% P2O5 (C) 43% N2 and 13% K2O (D) 43% K2O and 43% P2O5
Last Answer : (A) 13% N2 and 43% P2O5
Description : 5-10-5 fertilisers mean that they contain (A) 5, 10, 5% respectively of N2 , P2O5 and K2O (B) Only 5 to 10% active fertiliser constituents (C) 5 to 10% filler & carrier of soil conditioners (D) None of these
Last Answer : (A) 5, 10, 5% respectively of N2 , P2O5 and K2O
Description : Rock phosphate used for the production of phosphatic fertiliser is mined at (INDIA): (A) Amjhor (Jharkhand) (B) Talcher (Orissa) (C) Bailladella (M.P.) (D) Kiriburu (Bihar)
Last Answer : (A) Amjhor (Jharkhand)
Description : ch of the following fertilisers is needed for promoting the development of leaves and stems during early stages of plant growth? (A) Nitrogenous fertiliser (B) Potassic fertiliser (C) Phosphatic fertiliser (D) None of these
Last Answer : (A) Nitrogenous fertilise
Description : Which of the following fertilisers is required for the development of fibrous materials of the plants and of the sugar of vegetable & fruits? (A) Nitrogenous fertilisers (B) Phosphatic fertilisers (C) Potassic fertiliser (D) None of these
Last Answer : (C) Potassic fertiliser
Description : P2O5 content in triple superphosphate is about __________ percent. (A) 42-50 (B) 15-20 (C) 85-90 (D) 70-75
Last Answer : (A) 42-50
Description : P2O5 content in superphosphate is about __________ percent. (A) 30-35 (B) 15-20 (C) 65-70 (D) 85-90
Last Answer : (B) 15-20
Description : H3PO4 is the chemical formula of __________ phosphoric acid. (A) Pyro (B) Ortho (C) Meta (D) None of these
Last Answer : (B) Ortho
Description : Fertiliser value of a nitrogenous fertiliser is expressed in terms of its __________ content. (A) N2 (B) KNO3 (C) NO2 (D) NHO3
Last Answer : (A) N2
Description : 150. Nitrogen content in ammonium sulphate (a fertiliser) is around __________ percent. (A) 5 (B) 20 (C) 50 (D) 65
Last Answer : (B) 20
Description : Kopper-Totzek coal gasifier (installed in a coal based nitrogeneous fertiliser plant) employs a/an __________ bed gasifier. (A) Entrained (B) Moving (C) Fixed (D) Fluidised
Last Answer : (A) Entrained
Description : Steel produced from phosphatic iron is __________ in nature. (A) Malleable (B) Ductile (C) Brittle (D) Tough
Last Answer : (C) Brittle
Description : In the decomposition of PCl5 represented by, PCl5 ⇌ PCl3 + Cl2, decrease in the pressure of the system will __________ the degree of dissociation of PCl5. (A) Increase (B) Decrease (C) Not alter (D) None of these
Last Answer : (A) Increase
Description : Pick out the correct statement about catalytic polymerisation. (A) H2SO4 polymerisation process gives gasoline rich in unsaturates (B) In H2SO4 polymerisation, H3PO4 is always used with 2% steam to prevent meta & ortho H3PO4 formation, which are inactive (C) Both (A) and (B) (D) Neither (A) nor (B
Last Answer : (B) In H2SO4 polymerisation, H3PO4 is always used with 2% steam to prevent meta & ortho H3PO4 formation, which are inactive
Description : Catalyst used in isomerisation process is (A) H2SO4 (B) H3PO4 (C) HF (D) AlCl3
Last Answer : (D) AlCl3
Description : Catalyst used in catalytic polymerisation which produces polymergasoline is (A) H2SO4 (B) H3PO4 (C) Both (A) and (B) (D) AlCl3
Last Answer : (C) Both (A) and (B)
Description : Chemical formula of meta-phosphoric acid is (A) H3PO4 (B) H4P2O7 (C) HPO3 (D) Same as that of Pyrophosphoric acid
Last Answer : (C) HPO3
Description : Which of the following solvents is used for the extraction of H3PO4 from CaCl2 solution during manufacture of ortho-phosphoric acid by wet process employing hydrochloric acid leaching? (A) Isopropyl alcohol (B) Butyl alcohol (C) Toluene (D) Hexane
Last Answer : (B) Butyl alcohol
Description : Ammonium nitrate (a fertiliser) is coated with limestone powder to (A) Increase its nitrogen content (B) Cut down its production cost (C) Avoid the risk of explosion (D) Add extra nutrient as fertiliser
Last Answer : (C) Avoid the risk of explosion
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
Description : Liquid ammonia is not used as such a fertiliser in tropical countries like India, because (A) Its N2 content is very low (B) It is very costly (C) It will evaporate on spraying (D) It is not available
Last Answer : (C) It will evaporate on spraying
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
Description : Nitrogen content of a nitrogenous fertiliser is 35%. It could be (A) Urea (B) Ammonium nitrate (C) Calcium ammonium nitrate (CAN) (D) Ammonium sulphate
Last Answer : (B) Ammonium nitrate
Description : Pick up the correct statement from the following: (A) The dry density reduces by addition of water after attaining optimum moisture content (B) The line joining the peak of three moisture content graphs ... be compacted to a very high density as compared to fine grained soils (D) All the above
Last Answer : Answer: Option D
Description : Sulphur containing amino acids after catabolism produces a substance which is excreted: (A) SO2 (B) HNO3 (C) H2SO4 (D) H3PO4
Last Answer : Answer : C
Description : Why H3 PO3 is dibasic and H3PO4 is tribasic ?
Last Answer : Ans In H3PO3 only two replacable hydrogen but inH3PO4 , three hydrogens are replacable .
Description : Pick out the wrong statement. (A) Percentage of ash in coke produced from medium coking coal is more than that in coal (B) The calorific value (kcal/Nm3 ) of coke oven gas reduces on ... plants in India at Talcher (Orissa) and Ramagundam (A.P) employ Kopper-Totzek process of coal gasification
Last Answer : (C) Ash is normally removed as 'fly-ash' in Kopper-Totzek process of coal gasification
Description : Gas based fertiliser plants use (A) Natural gas as a source of hydrogen (B) Natural gas as heating medium (C) Coal gas as a source of hydrogen (D) Coal gas as heating medium
Last Answer : (A) Natural gas as a source of hydrogen
Description : Two gas based fertiliser plants are located in India are: (A) Maharashtra and Gujarat (B) Maharashtra and Orissa (C) Gujarat and Madhya Pradesh (D) Jharkhand and Chhattisgarh
Last Answer : A) Maharashtra and Gujarat
Description : A fertiliser plant is classified as a gas based fertiliser plant, when it uses__________ gas as a source of hydrogen for the manufacture of ammonia. (A) Coke oven (B) Producer (C) Natural (D) Coal
Last Answer : (C) Natural
Description : Which of the following gasifiers can be attached to coal based fertiliser plants? (A) Lurgi (high pressure) gasifier (B) Kopper-Totzek gasifier (C) Gasifier working at 20 atm (D) Gasifier working at 40 atm
Last Answer : (B) Kopper-Totzek gasifier
Description : Coal based fertiliser plants at Ramagundam (Andhra Pradesh) and Talcher (Orissa) (A) Use coal for heating purpose (B) Gasify coal to get hydrogen from coal gas (C) Use coal as filler in fertiliser (D) Use coal as conditioner in fertiliser
Last Answer : (B) Gasify coal to get hydrogen from coal gas
Description : Triple superphosphate which contains about 46% P2O5 is produced by the reaction of phosphate rock with ortho phosphoric acid of________ percent concentration. (A) 25-28 (B) 52-54 (C) 75-80 (D) > 98
Last Answer : (B) 52-54
Description : P2O5 percentage in the phosphoric acid produced by wet process is about (A) 10 (B) 30 (C) 50 (D) 70
Last Answer : (B) 30
Description : Fertiliser having high nitrogen content is – (1) Urea (2) Ammonium sulphate (3) Ammonium nitrate (4) Calcium citrate
Last Answer : (3) Ammonium nitrate Explanation: A growth fertilizer will have a high N content and relatively low P and K content. Ammonium nitrate is the highest Nitrogen fertilizer you can buy, and it is ... formulations of growth fertilizers will contain 5, 6 or even 7 times more Nitrogen than anything else.
Description : Fertiliser having high nitrogen content is : (1) Urea (2) Ammonium sulphate (3) Ammonium nitrate (4) Calcium citrate
Last Answer : Ammonium nitrate
Description : Phosphatic fertilisers (A) Are useful during early stage of the plant growth (B) Accelerate fruit formation in later stages of growth (C) Lessen the effect of excessive nitrogen application (D) None of these
Last Answer : (B) Accelerate fruit formation in later stages of growth
Description : Fruits and vegetables are graded based on their ____ and ____. a. size, shape c. smell, shape b. color, size d. smell, color
Last Answer : a. size, shape
Description : Pick out the wrong statement pertaining to the decomposition of PCl5 represented by, PCl5 ⇌ PCl3 + Cl2.Degree of dissociation of PCl5 will (A) Decrease on addition of Cl2 (B) Increase on addition of ... at constant pressure (C) Decrease on increasing the pressure of the system (D) None of these
Last Answer : (D) None of thes
Description : Ammonia gas can be dried by (A) PCl5 (B) Quick lime (C) CaCl2 (D) Concentrated H2SO4
Last Answer : (B) Quick lime
Description : Calcium ammonium nitrate (a fertiliser) is dried in a __________ dryer. (A) Rotary (B) Vacuum (C) Tunnel (D) Tray
Last Answer : (A) Rotary