Description : Deoxyribose sugar + Nitrogenous base + phosphate group (PO2 )
Last Answer : Ans. Nucleotide
Description : The phosphate solubilizer species of micro organisms is
Last Answer : Ans. Pseudomonas
Description : How many no. of error variance are applied in Strip Plot Design
Last Answer : Ans. 3
Description : The factor requires larger units to be applied and may produce larger differences
Last Answer : Ans. Main plot
Description : Which design is applied when experimental material are limited and homogenous
Last Answer : Ans. CRD
Description : Which transformation is applied when mean a variance
Last Answer : Ans. Square root
Description : Mean applied when deals with relative changes eg. Bacterial growth, cell division, population
Last Answer : Ans. GM
Description : Mean applied when deals with rate, price and speed of a vehicle
Last Answer : Ans. HM
Description : The principle applied for “What to produce”
Last Answer : Ans. Principal of opportunity cost/Equimarginal returns
Description : The principle applied for “How to produce”
Last Answer : Ans. Principal of least cost combination
Description : The principle applied for production function “How much to produce”
Last Answer : Ans. Principal of diminishing returns/costs
Description : Applied use of molecular biology and recombinant DNA Technology known as
Last Answer : Ans. Biotechnology
Description : Rhizobium trifoli is applied for
Last Answer : Ans. Berseem
Description : Rhizobium leguminosarum is applied for
Last Answer : Ans. Pea, Lathyrus and Lentil
Description : Rhizobium japonicum culture is applied for crops
Last Answer : Ans. Soybean and Groundnut
Description : Lowland applied nitrification inhibitors
Last Answer : Ans. Oxamide (31%N) and Thiourea (36.8%N)
Description : Which nutrients can be applied by fertigation
Last Answer : Ans. Nitrogen and sulphur
Description : Solution of fertilizer specially applied at initial growth of plants in pulses and vegetable crops
Last Answer : Ans. Starter solution
Description : Maximum amount of fertilizer is applied in
Last Answer : Ans. Potato
Description : Sulphuric acid is mixed with ground phosphate rock (to produce phosphoric acid) in a steel digestor lined with (A) Acidic refractory (B) Rubber (C) Karbate (D) Lead or acid proof bricks
Last Answer : (A) Acidic refractory
Description : Sulphuric acid is mixed with ground phosphate rock (to produce phosphoric acid) in a steel digestor lined with (A) Acidic refractory (B) Rubber (C) Karbate (D) Lead or acid-proof bricks
Last Answer : (D) Lead or acid-proof bricks
Description : Which of the following phosphatic fertilizer is useful in groundnut crop ? (A) D.A.P. (B) Rock Phosphate (C) Triple Super-Phosphate (TSP) (D) Single Super Phosphate (S.S.P.)
Last Answer : (D) Single Super Phosphate (S.S.P.)
Description : What are the advantages of fertigation in agriculture? 1. Controlling the alkalinity of irrigation water is possible. 2. Efficient application of Rock Phosphate and all other phosphatic fertilizers is possible. 3. Increased availability of ... 1, 2 and 4 only c) 1, 3 and 4 only d) 2, 3 and 4 only
Last Answer : c) 1, 3 and 4 only
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 : Fusion zone in the electric furnace used for reduction of phosphate rock to elemental phosphorous is maintained at __________ °C. (A) 250-300 (B) 500-750 (C) 950-1050 (D) 1400-1450
Last Answer : (D) 1400-1450
Description : Reaction of ortho-phosphoric acid with phosphate rock produces (A) Superphosphate (B) Triple superphosphate (C) Meta-phosphoric acid (D) Monoammonium phosphate
Last Answer : (B) Triple superphosphate
Description : In the manufacture of H3 PO4 (ortho); strong H2 SO4 leaching wet process as compared to electric furnace process (A) Uses lower grade phosphate rock (B) Requires lower capital investment in the plant (C) Produces lower purity acid (D) Is very costly
Last Answer : (C) Produces lower purity acid
Description : Action of phosphoric acid on rock phosphate produces (A) Superphosphate (B) Triple superphosphate (C) Nitrophosphate (D) Diammonium phosphate
Description : Heating a mixture of phosphate rock, coke and sand in an electric furnace produces (A) Phosphoric acid (B) Ammonium phosphate (C) Phosphorous (D) Superphosphate
Last Answer : (C) Phosphorous
Description : Main constituent of phosphate rock is (A) Ammonium phosphate (B) Flour apatite (C) Calcium fluoride (D) Calcium phosphate
Last Answer : (B) Flour apatite
Description : Yield of elemental phosphorous from rock phosphate is about __________ percent. (A) 1-2 (B) 15-25 (C) 40-45 (D) 60-65
Last Answer : (B) 15-25
Description : Leaching of phosphate rock by strong __________ acid produces phosphoric acid. (A) Sulphuric (B) Hydrochloric (C) Either (A) or (B) (D) Neither (A) nor (B)
Last Answer : (C) Either (A) or (B)
Description : Reaction of nitric acid and sulphuric acid with phosphate rock produces (A) Nitrophosphate (B) Diammonium phosphate (C) Tricresyl phosphate (D) Tributyl phosphate
Last Answer : (A) Nitrophosphate
Description : Pick out the wrong statement. (A) Yellow phosphorous which is the most reactive allotropic form of phosphorous is transported under water (B) Apatite is the principal material present in ... fixation means the process of bringing atmospheric nitrogen into combination i.e. into nitrogen compound fo
Last Answer : (C) Urea is more hygroscopic than ammonium nitrate
Description : Electric process as compared to wet process (for the manufacture of phosphoric acid) (A) Can use only high grade phosphate rock (B) Is used less frequently (C) Produces a valuable by-product called gypsum (D) Is weak acid process
Last Answer : (B) Is used less frequently
Description : Rock phosphate constitutes mainly of (A) Fluorapatite (B) Di-calcium phosphate (C) Mono-calcium phosphate (D) Di-ammonium phosphate
Last Answer : (A) Fluorapatite
Description : Superphosphate is manufactured by reacting phosphate rock with (A) Acetic acid (B) Sulphuric acid (C) Aluminium chloride (D) None of these
Last Answer : (B) Sulphuric acid
Description : Pick out the wrong statement. (A) Dehydration of ammonium carbamate to produce urea is endothermic (B) Direct use of liquid ammonia as a fertiliser for a tropical country like India ... manufacture of ortho-phosphoric acid (D) Phosphate rock when reacted with dilute H2SO4 produces superphosphate
Last Answer : (B) Direct use of liquid ammonia as a fertiliser for a tropical country like India is suitable
Description : Phosphoric acid is produced in wet process from phosphate rock and (A) Dilute H2SO4 (B) Concentrated H2SO4 (C) Concentrated NHO3 (D) Concentrated HCl
Last Answer : (A) Dilute H2SO4
Description : The main constituent of rock phosphate is (A) Mono-calcium phosphate (B) Di-calcium phosphate (C) Fluorspar (D) None of these
Last Answer : (B) Di-calcium phosphate
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 : Reaction of dilute sulphuric acid with phosphate rock produces (A) Phosphoric acid (B) Superphosphate (C) Triple superphosphate (D) Gypsum
Last Answer : (A) Phosphoric acid
Description : Reaction of phosphate rock with 98% H2SO4 produces (A) Ortho-phosphoric acid (B) Superphosphate (C) White phosphorous (D) None of these
Last Answer : (A) Ortho-phosphoric acid
Description : Pick out the wrong statement. (A) 'Green acid' is the other name of phosphoric acid produced by the reaction of phosphate rock & sulphuric acid (B) Chemically unreactive nature of ... in the manufacture of safety matches, is converted into white phosphorous by vaporisation followed by condensation
Last Answer : (C) Red phosphorous is the most reactive allotropic form of phosphorous
Description : Reaction of __________ acid with phosphate rock produces superphosphates. (A) Hydrochloric (B) Sulphuric (C) Nitric (D) Phosphoric
Last Answer : (B) Sulphuric
Description : Low grade phosphate rock can be used in electrical furnace, because (A) Of the better CaO/SiO2 balance for slag formation (B) CaO content is less (C) It is cheap (D) It produces low cost product
Last Answer : (A) Of the better CaO/SiO2 balance for slag formation
Description : A mixture of phosphate rock __________ is heated in an electric furnace to produce phosphorous. (A) Salt & coke (B) Sand & coke (C) And coke (D) And sand
Last Answer : (B) Sand & coke
Description : Heating of coke, sand & phosphate rock in an electric furnace is done for the manufacture of (A) Phosphoric acid (B) Superphosphate (C) Phosphorous (D) Triple superphosphate
Description : Electric furnace method for production of phosphorous uses phosphate rock and __________ (A) Phosphoric acid (B) Coke (C) Sulphuric acid (D) Silica and coke
Last Answer : (D) Silica and coke
Description : Triple superphosphate is made by reacting phosphate rock with __________ acid. (A) Phosphoric (B) Nitric (C) Sulphuric (D) Hydrochloric
Last Answer : (A) Phosphoric