________ content of the phosphate rock is the pollutant of primary interest in a phosphatic fertiliser plant. (A) Calcium (B) Fluorine (C) Phosphorous (D) Sulphur

________ content of the phosphate rock is the pollutant of primary
interest in a phosphatic fertiliser plant.
(A) Calcium
(B) Fluorine
(C) Phosphorous
(D) Sulphur
by

1 Answer

Answer :

(B) Fluorine
by

Related questions

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)

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)

A phosphatic fertiliser contains 16% P2O5 . It could be (A) Dicalcium phosphate (B) Superphosphate(C) Triple superphosphate(D) None of these

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

Ammonium phosphate is a __________ fertiliser. (A) Nitrogenous (B) Phosphatic (C) Complex (D) Mixed

Description : Ammonium phosphate is a __________ fertiliser. (A) Nitrogenous (B) Phosphatic (C) Complex (D) Mixed

Last Answer : (D) Mixed

Phosphatic fertiliser is graded based on its __________ content. (A) P2O3 (B) PCl5 (C) P2O5 (D) H3PO4

Description : Phosphatic fertiliser is graded based on its __________ content. (A) P2O3 (B) PCl5 (C) P2O5 (D) H3PO4

Last Answer : (C) P2O5

Which nutrient in fertiliser makes the plant stems stronger and increases branching? (A) Nitrogen (B) Phosphorous (C) Potassium (D) Calcium

Description : Which nutrient in fertiliser makes the plant stems stronger and increases branching? (A) Nitrogen (B) Phosphorous (C) Potassium (D) Calcium

Last Answer : (B) Phosphorous

Pick out the wrong statement. (A) All the nitrogenous fertilisers are not soluble in water (B) A straight fertiliser contains only one nutrient (C) Calcium cyanamide is used as weed killer in onion fields (D) The phosphorous nutrient makes the plant stem stronger and increases its branches

Description : Pick out the wrong statement. (A) All the nitrogenous fertilisers are not soluble in water (B) A straight fertiliser contains only one nutrient (C) Calcium cyanamide is used as weed killer in onion fields (D) The phosphorous nutrient makes the plant stem stronger and increases its branches

Last Answer : (A) All the nitrogenous fertilisers are not soluble in water

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

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

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 : 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

Last Answer : (A) Nitrogenous

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.)

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.)

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 nutrients to plants is possible. 4. Reduction in the leaching of chemical nutrients is possible. Select the correct answer using the code given below - a) 1, 2 and 3 only b) 1, 2 and 4 only c) 1, 3 and 4 only d) 2, 3 and 4 only

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

Urea is a __________ fertiliser. (A) Nitrogenous (B) Potassic (C) Phosphatic (D) None of these

Description : Urea is a __________ fertiliser. (A) Nitrogenous (B) Potassic (C) Phosphatic (D) None of these

Last Answer : (A) Nitrogenous

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

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

NPK fertiliser is a __________ fertiliser. (A) Complex (B) Mixed (C) Nitrogenous (D) Phosphatic

Description : NPK fertiliser is a __________ fertiliser. (A) Complex (B) Mixed (C) Nitrogenous (D) Phosphatic

Last Answer : (B) Mixed

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 is suitable (C) Gypsum (CaSO4 . 2H2O) is obtained as a by-product in the wet process for manufacture of ortho-phosphoric acid (D) Phosphate rock when reacted with dilute H2SO4 produces superphosphate

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

Which of the following is not a mixed fertiliser? (A) Nitrophosphate (B) Calcium ammonium nitrate (CAN) (C) Ammonium phosphate (D) None of these

Description : Which of the following is not a mixed fertiliser? (A) Nitrophosphate (B) Calcium ammonium nitrate (CAN) (C) Ammonium phosphate (D) None of these

Last Answer : (B) Calcium ammonium nitrate (CAN)

Which of the following does not come under the category of ‘primary nutrient' for plant growth? (A) Potassium (B) Nitrogen (C) Phosphorous (D) Sulphur

Description : Which of the following does not come under the category of ‘primary nutrient' for plant growth? (A) Potassium (B) Nitrogen (C) Phosphorous (D) Sulphur

Last Answer : (D) Sulphur

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

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

Heating a mixture of phosphate rock, coke and sand in an electric furnace produces (A) Phosphoric acid (B) Ammonium phosphate (C) Phosphorous (D) Superphosphate

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

Yield of elemental phosphorous from rock phosphate is about __________ percent. (A) 1-2 (B) 15-25 (C) 40-45 (D) 60-65

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

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 phosphate rock which is chemically Ca10 (PO4 )6 (F, Cl, OH) (C) Urea is more hygroscopic than ammonium nitrate (D) Nitrogen fixation means the process of bringing atmospheric nitrogen into combination i.e. into nitrogen compound fo

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

Reaction of phosphate rock with 98% H2SO4 produces (A) Ortho-phosphoric acid (B) Superphosphate (C) White phosphorous (D) None of these

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

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 red phosphorous is due to its polymeric structure (C) Red phosphorous is the most reactive allotropic form of phosphorous (D) Red phosphorous, which is used in the manufacture of safety matches, is converted into white phosphorous by vaporisation followed by condensation

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

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

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

Electric furnace method for production of phosphorous uses phosphate rock and __________ (A) Phosphoric acid (B) Coke (C) Sulphuric acid (D) Silica and coke

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

Phosphate rock is a raw material for the manufacture of (A) Phosphoric acid (B) Phosphorous (C) Superphosphates (D) All (A), (B) and (C)

Description : Phosphate rock is a raw material for the manufacture of (A) Phosphoric acid (B) Phosphorous (C) Superphosphates (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

Reaction of Cresylic acid with __________ produces Tricresyl phosphate.(A) Phosphorous pentoxide (B) Phosphorous oxychloride (C) Ammonium phosphate (D) Calcium phosphate

Description : Reaction of Cresylic acid with __________ produces Tricresyl phosphate.. (A) Phosphorous pentoxide (B) Phosphorous oxychloride (C) Ammonium phosphate (D) Calcium phosphate

Last Answer : (B) Phosphorous oxychloride

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 : 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

Last Answer : (C) Phosphorous

The characteristic of hyperparathyroidism is (A) Low serum calcium (B) High serum phosphorous (C) Low serum calcium and high serum phosphorous (D) High serum calcium and low serum phosphate

Description : The characteristic of hyperparathyroidism is (A) Low serum calcium (B) High serum phosphorous (C) Low serum calcium and high serum phosphorous (D) High serum calcium and low serum phosphate

Last Answer : Answer : D

(2) Nitrogen, Phosphorous and Sodium Explanation: Fertilizer (or fertiliser) is any organic or inorganic material of natural or synthetic origin (other than liming materials) that is added to a soil to supply one or more plant nutrients essential to the growth of plants. The three elements most needed in common fertilisers are Nitrogen.

Description : (2) Nitrogen, Phosphorous and Sodium Explanation: Fertilizer (or fertiliser) is any organic or inorganic material of natural or synthetic origin (other than liming materials) that is added to a ... essential to the growth of plants. The three elements most needed in common fertilisers are Nitrogen.

Last Answer : Metal are good conductors, because – (1) they contain free electrons (2) the molecules in them are very close to each other (3) the molecules in them collide very freely (4) they contain reflecting surface

A good metallurgical coke should have very low (A) Sulphur & phosphorous content (B) Porosity (C) Fusion point of its ash (D) Hardness & strength

Description : A good metallurgical coke should have very low (A) Sulphur & phosphorous content (B) Porosity (C) Fusion point of its ash (D) Hardness & strength

Last Answer : (A) Sulphur & phosphorous content

Nitrogen content of a nitrogenous fertiliser is 35%. It could be (A) Urea (B) Ammonium nitrate (C) Calcium ammonium nitrate (CAN) (D) Ammonium sulphate

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

Which chemical is used to ripen mangoes artificially? (1) Sulphur Dioxide (2) Nitrous Oxide (3) Calcium Carbide (4) Phosphorous

Description : Which chemical is used to ripen mangoes artificially? (1) Sulphur Dioxide (2) Nitrous Oxide (3) Calcium Carbide (4) Phosphorous

Last Answer : (3) Calcium Carbide Explanation: The chemical widely used for artificially ripening fruits is calcium carbide (CaC2). It is used to ripen about 80 per cent of mangoes in India.

The three elements most needed in common fertilisers are : (1) Sulphur, Phosphorous and Sodium (2) Nitrogen, Potassium and Phosphorous (3) Phosphorous, Sodium and Nitrogen (4) Calcium, Phosphorous and Potassium

Description : The three elements most needed in common fertilisers are : (1) Sulphur, Phosphorous and Sodium (2) Nitrogen, Potassium and Phosphorous (3) Phosphorous, Sodium and Nitrogen (4) Calcium, Phosphorous and Potassium

Last Answer : Nitrogen, Potassium and Phosphorous

Fertiliser having high nitrogen content is – (1) Urea (2) Ammonium sulphate (3) Ammonium nitrate (4) Calcium citrate

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.

Fertiliser having high nitrogen content is : (1) Urea (2) Ammonium sulphate (3) Ammonium nitrate (4) Calcium citrate

Description : Fertiliser having high nitrogen content is : (1) Urea (2) Ammonium sulphate (3) Ammonium nitrate (4) Calcium citrate

Last Answer : Ammonium nitrate

Absorption of phosphorous from diet is favoured by (A) Moderate amount of fat (B) Acidic environment (C) High calcium content (D) High phytic acid

Description : Absorption of phosphorous from diet is favoured by (A) Moderate amount of fat (B) Acidic environment (C) High calcium content (D) High phytic acid

Last Answer : Answer : B

Main constituent of phosphate rock is (A) Ammonium phosphate (B) Flour apatite (C) Calcium fluoride (D) Calcium phosphate

Description : Main constituent of phosphate rock is (A) Ammonium phosphate (B) Flour apatite (C) Calcium fluoride (D) Calcium phosphate

Last Answer : (B) Flour apatite

Rock phosphate constitutes mainly of (A) Fluorapatite (B) Di-calcium phosphate (C) Mono-calcium phosphate (D) Di-ammonium phosphate

Description : Rock phosphate constitutes mainly of (A) Fluorapatite (B) Di-calcium phosphate (C) Mono-calcium phosphate (D) Di-ammonium phosphate

Last Answer : (A) Fluorapatite

The main constituent of rock phosphate is (A) Mono-calcium phosphate (B) Di-calcium phosphate (C) Fluorspar (D) None of these

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

Pick out the wrong statement. (A) 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 ornitrate ions and forms amino acids(B) Calcium present in the fertiliser helps in correcting the soil acidity(C) Particle size range of a good granular fertiliser is 10-15 mesh and itcontains less moisture as compared to finely divided powder form of fertiliser(D) Ammonium nitrate fertiliser is obtained as a by-product in an integratedsteel plant having by-product coke ovens

Description : Pick out the wrong statement. (A) 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 ornitrate ... nitrate fertiliser is obtained as a by-product in an integrated steel plant having by-product coke ovens

Last Answer : (D) Ammonium nitrate fertiliser is obtained as a by-product in an integrated steel plant having by-product coke ovens

Which is the best fertiliser for paddy? (A) Ammonium sulphate (B) Nitro-phosphate (C) Superphosphate (D) Potassium nitrate

Description : Which is the best fertiliser for paddy? (A) Ammonium sulphate (B) Nitro-phosphate (C) Superphosphate (D) Potassium nitrate

Last Answer : (A) Ammonium sulphate

Nitro-phosphate (manufactured at Trombay-India) is a __________ fertiliser. (A) Mixed (B) Complex (C) Highly hygroscopic (D) Highly explosive

Description : Nitro-phosphate (manufactured at Trombay-India) is a __________ fertiliser. (A) Mixed (B) Complex (C) Highly hygroscopic (D) Highly explosive

Last Answer : (B) Complex

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

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

The common pollutant generated in chlor-alkali industry and battery manufacture is (A) Mercury (B) Brine (C) Phosphate (D) None of these

Description : The common pollutant generated in chlor-alkali industry and battery manufacture is (A) Mercury (B) Brine (C) Phosphate (D) None of these

Last Answer : (A) Mercury

Bone is used as a fertiliser because it contains the plant nutrient (1) Nitrogen (2) Phosphorus (3) Sodium (4) Calcium

Description : Bone is used as a fertiliser because it contains the plant nutrient (1) Nitrogen (2) Phosphorus (3) Sodium (4) Calcium

Last Answer : Phosphorus

In calculus formation, the epitaxic concept is one of the theories. Which of the following is true: a. Mineralisation occurs when calcium and phosphate content is high. b. The presence of matrix would start initial formation of nucleus. c. The amorphous materials would convert to calcium phosphate and hydroxy phosphate.

Description : In calculus formation, the epitaxic concept is one of the theories. Which of the following is true: a. Mineralisation occurs when calcium and phosphate content is high. b. The presence of ... of nucleus. c. The amorphous materials would convert to calcium phosphate and hydroxy phosphate.

Last Answer : b. The presence of matrix would start initial formation of nucleus.

In calculus formation the epitaxic concept is one of the theories. Which of the following is true: A. Mineralisation occurs when calcium and phosphate content is high B. The presence of matrix would initiate the formation of the nucleus C. The amorphous materials would convert to calcium phosphate and hydroxy

Description : In calculus formation the epitaxic concept is one of the theories. Which of the following is true: A. Mineralisation occurs when calcium and phosphate content is high B. The presence of ... the formation of the nucleus C. The amorphous materials would convert to calcium phosphate and hydroxy

Last Answer : B. The presence of matrix would initiate the formation of the nucleus

__________ is added in low carbon steel to raise its yield point. (A) Sulphur (B) Phosphorous (C) Silicon (D) Manganese

Description : __________ is added in low carbon steel to raise its yield point. (A) Sulphur (B) Phosphorous (C) Silicon (D) Manganese

Last Answer : (D) Manganese

High amount of sulphur and phosphorous in coke causes (A) Decrease in its calorific value (B) Increase in its strength(C) Brittleness of steel made by using it(D) None of these

Description : High amount of sulphur and phosphorous in coke causes (A) Decrease in its calorific value (B) Increase in its strength (C) Brittleness of steel made by using it (D) None of these

Last Answer : (C) Brittleness of steel made by using it

Which of the following is not a measure component necessarily to be present in fertilisers? (A) Nitrogen (B) Potassium (C) Phosphorous (D) Sulphur

Description : Which of the following is not a measure component necessarily to be present in fertilisers? (A) Nitrogen (B) Potassium (C) Phosphorous (D) Sulphur

Last Answer : (D) Sulphur