Bone ash contains - (1) Calcium sulphate (2) Phosphoric sulphate (3) Calcium phosphate (4) Calcium hypophosphate

Bone ash contains - (1) Calcium sulphate (2) Phosphoric sulphate (3) Calcium phosphate (4) Calcium hypophosphate
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(3) Calcium phosphate Explanation: Bone ash is a. white material produced by the calcination of bones. It is primarily composed of calcium phosphate. It is commonly used in fertilizers, polishing compounds and in making ceramics such as bone china. It also has historical uses in the manufacture of baking powders and assay cupels.
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Bone ash contains (1) Calcium sulphate (2) Phosphoric sulphate (3) Calcium phosphate (4) Calcium hypophosphate

Description : Bone ash contains (1) Calcium sulphate (2) Phosphoric sulphate (3) Calcium phosphate (4) Calcium hypophosphate

Last Answer : Calcium phosphate

Main component of bone ash is (A) Calcium sulphate (B) Calcium phosphate (C) Calcium carbonate (D) Sodium phosphate

Description : Main component of bone ash is (A) Calcium sulphate (B) Calcium phosphate (C) Calcium carbonate (D) Sodium phosphate

Last Answer : what is the answer ?

Main constituent of bone ash is (A) Ammonium phosphate (B) Calcium phosphate (C) Animal charcoal (D) Ammonium sulphate

Description : Main constituent of bone ash is (A) Ammonium phosphate (B) Calcium phosphate (C) Animal charcoal (D) Ammonium sulphate

Last Answer : (B) Calcium phosphate

Sweat contains (a) pure water (b) water, salt and waste matter (c) phosphoric acid (d) calcium phosphate and water

Description : Sweat contains (a) pure water (b) water, salt and waste matter (c) phosphoric acid (d) calcium phosphate and water

Last Answer : Ans:(b)

Reaction of ortho-phosphoric acid with soda ash produces (A) Sodium Tributyl phosphate (STPP) (B) Tricresyl phosphate (C) Tributyl phosphate (D) Nitrophosphate

Description : Reaction of ortho-phosphoric acid with soda ash produces (A) Sodium Tributyl phosphate (STPP) (B) Tricresyl phosphate (C) Tributyl phosphate (D) Nitrophosphate

Last Answer : (A) Sodium Tributyl phosphate (STPP)

CaH4 (PO4 )2 is the chemical formula of (A) Superphosphate (B) Triple superphosphate (C) Calcium phosphate (D) Meta phosphoric acid

Description : CaH4 (PO4 )2 is the chemical formula of (A) Superphosphate (B) Triple superphosphate (C) Calcium phosphate (D) Meta phosphoric acid

Last Answer : (B) Triple superphosphate

The chemical substance present in bones and teeth is - (1) Calcium phosphate (2) Calcium chloride (3) Calcium sulphate (4) Calcium borate

Description : The chemical substance present in bones and teeth is - (1) Calcium phosphate (2) Calcium chloride (3) Calcium sulphate (4) Calcium borate

Last Answer : (1) Calcium phosphate Explanation: Seventy percent of bone consists of hydroxyapatite, a calcium phosphate mineral (known as bone mineral). Tooth enamel is composed of almost ninety percent hydroxylapatite.

The chemical substance present in bones and teeth is - (1) Calcium phosphate (2) Calcium chloride (3) Calcium sulphate (4) Calcium borate

Description : The chemical substance present in bones and teeth is - (1) Calcium phosphate (2) Calcium chloride (3) Calcium sulphate (4) Calcium borate

Last Answer : (1) Calcium phosphate Explanation: Seventy percent of bone consists of hydroxyapatite, a calcium phosphate mineral. (known as bone mineral). Tooth enamel is composed of almost ninety percent hydroxylapatite.

The chemical substance present in bones and teeth is (1) Calcium phosphate (2) Calcium chloride (3) Calcium sulphate (4) Calcium borate

Description : The chemical substance present in bones and teeth is (1) Calcium phosphate (2) Calcium chloride (3) Calcium sulphate (4) Calcium borate

Last Answer : Calcium phosphate

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

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

The main chemical substance present in the bones and teeth of animals is: A. Sodium Chloride B. Sugar C. Calcium Phosphate D. Calcium sulphate

Description : The main chemical substance present in the bones and teeth of animals is: A. Sodium Chloride B. Sugar C. Calcium Phosphate D. Calcium sulphate

Last Answer : ANSWER: C

The main chemical substance present in the bones and teeth of animal is (a) sodium chloride (b) sugar (c) calcium phosphate (d) calcium sulphate

Description : The main chemical substance present in the bones and teeth of animal is (a) sodium chloride (b) sugar (c) calcium phosphate (d) calcium sulphate

Last Answer : Ans:(c)

At Sindri in Jharkhand, the fertilizer produced is – (1) Urea (2) Ammonium Phosphate (3) Calcium Super Phosphate (4) Ammonium Sulphate

Description : At Sindri in Jharkhand, the fertilizer produced is – (1) Urea (2) Ammonium Phosphate (3) Calcium Super Phosphate (4) Ammonium Sulphate

Last Answer : (1) Urea Explanation: The Sindri factory was a Urea factory. It was the first in India to produce Ammonium Sulphate (1951), Urea (1959), and Ammonium Nitrate-Sulphate, commonly called the Double ... one 1.14 million tonne Gas based Urea fertilizer Plant and 500 MW Power Plant is being contemplated.

What is the main component of bones and teeth? A. Calcium carbonate B. Calcium phosphate (Answer) C. Calcium sulphate D. Calcium nitrate

Description : What is the main component of bones and teeth? A. Calcium carbonate B. Calcium phosphate (Answer) C. Calcium sulphate D. Calcium nitrate

Last Answer : B. Calcium phosphate (Answer)

Which of the ‘complex fertilizer’? 1) Ammonium sulphate nitrate 2) Single superphosphate 3) Ammonium phosphate 4) Calcium ammonium nitrate

Description : Which of the ‘complex fertilizer’? 1) Ammonium sulphate nitrate 2) Single superphosphate 3) Ammonium phosphate 4) Calcium ammonium nitrate

Last Answer : 3) Ammonium phosphate

What is the main component of bones and teeth? A.Calcium carbonate B.Calcium phosphate C.Calcium sulphate D.Calcium nitrate

Description : What is the main component of bones and teeth? A.Calcium carbonate B.Calcium phosphate C.Calcium sulphate D.Calcium nitrate

Last Answer : B.Calcium phosphate

An acid having basicity one is - (1) Sodium dihydrogen phosphate (2) Disodium hydrogen phosphate (3) Sodium phosphate (4) Phosphoric acid

Description : An acid having basicity one is - (1) Sodium dihydrogen phosphate (2) Disodium hydrogen phosphate (3) Sodium phosphate (4) Phosphoric acid

Last Answer : (2) Disodium hydrogen phosphate Explanation: The basicity of an acid is the number of hydrogen ions (H+) which can be produced by the ionization of one molecule of the acid in aqueous solution. ... Similarly, the basicity of Disodium phosphate (Na2HPO4) is one since it has one H+ displaceable ion.

An acid having basicity one is (1) Sodium dihydrogen phosphate (2) Disodium hydrogen phosphate (3) Sodium phosphate (4) Phosphoric acid

Description : An acid having basicity one is (1) Sodium dihydrogen phosphate (2) Disodium hydrogen phosphate (3) Sodium phosphate (4) Phosphoric acid

Last Answer : Disodium hydrogen phosphate

Which of the following fertilisers contains the least percentage of nitrogen? (A) Liquid ammonia (B) Urea (C) Ammonium phosphate (D) Ammonium sulphate

Description : Which of the following fertilisers contains the least percentage of nitrogen? (A) Liquid ammonia (B) Urea (C) Ammonium phosphate (D) Ammonium sulphate

Last Answer : (C) Ammonium phosphate

Human bone does not contain-----? A. Calcium B. Chondroitin sulfate C. Boron (Answer) D. phosphate

Description : Human bone does not contain-----? A. Calcium B. Chondroitin sulfate C. Boron (Answer) D. phosphate

Last Answer : C. Boron (Answer)

Soap cannot be used with hard water, because (A) Hard water contains sulphate (B) They form insoluble calcium soaps which precipitate (C) They attract back the removed dirt (D) None of these

Description : Soap cannot be used with hard water, because (A) Hard water contains sulphate (B) They form insoluble calcium soaps which precipitate (C) They attract back the removed dirt (D) None of these

Last Answer : (B) They form insoluble calcium soaps which precipitate

Hard water contains (A) Calcium (B) Magnesium bicarbonates (C) Magnesium sulphate (D) All the above

Description : Hard water contains  (A) Calcium  (B) Magnesium bicarbonates  (C) Magnesium sulphate  (D) All the above 

Last Answer : (D) All the above 

Why ash and nitrate-phosphate fertilizers are used in agricultural lands ?

Description : Why ash and nitrate-phosphate fertilizers are used in agricultural lands ?

Last Answer : Ash and nitrate-phosphate fertilizers are used in agricultural lands. This is because nitrate fertilizers are easily dissolved in water and mixed with the soil, and these nitrate salts are ... agricultural land. For this reason ash and nitrate-phosphate fertilizers are used in agricultural lands.

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

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

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

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

Reaction of ortho-phosphoric acid with phosphate rock produces (A) Superphosphate (B) Triple superphosphate (C) Meta-phosphoric acid (D) Monoammonium phosphate

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

Action of phosphoric acid on rock phosphate produces (A) Superphosphate (B) Triple superphosphate (C) Nitrophosphate (D) Diammonium phosphate

Description : Action of phosphoric acid on rock phosphate produces (A) Superphosphate (B) Triple superphosphate (C) Nitrophosphate (D) Diammonium phosphate

Last Answer : (B) Triple superphosphate

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

Leaching of phosphate rock by strong __________ acid produces phosphoric acid. (A) Sulphuric (B) Hydrochloric (C) Either (A) or (B) (D) Neither (A) nor (B)

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)

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

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

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

Phosphoric acid is produced in wet process from phosphate rock and (A) Dilute H2SO4 (B) Concentrated H2SO4 (C) Concentrated NHO3 (D) Concentrated HCl

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

Reaction of dilute sulphuric acid with phosphate rock produces (A) Phosphoric acid (B) Superphosphate (C) Triple superphosphate (D) Gypsum

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

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

Reaction of __________ acid with phosphate rock produces superphosphates. (A) Hydrochloric (B) Sulphuric (C) Nitric (D) Phosphoric

Description : Reaction of __________ acid with phosphate rock produces superphosphates. (A) Hydrochloric (B) Sulphuric (C) Nitric (D) Phosphoric

Last Answer : (B) Sulphuric

Sodium tri poly phosphate (STPP) is manufactured by reaction of phosphoric acid with sodium(A) Carbonate(B) Phosphate(C) Bicarbonate(D) Silicate

Description : Sodium tri poly phosphate (STPP) is manufactured by reaction of phosphoric acid with sodium (A) Carbonate (B) Phosphate (C) Bicarbonate (D) Silicate

Last Answer : (A) Carbonat

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

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

Reaction of anhydrous liquid ammonia with ortho-phosphoric acid produces (A) Ammonium phosphate (B) Superphosphate (C) Triple superphosphate (D) None of these

Description : Reaction of anhydrous liquid ammonia with ortho-phosphoric acid produces (A) Ammonium phosphate (B) Superphosphate (C) Triple superphosphate (D) None of these

Last Answer : (A) Ammonium phosphate

Triple superphosphate is made by reacting phosphate rock with __________ acid. (A) Phosphoric (B) Nitric (C) Sulphuric (D) Hydrochloric

Description : Triple superphosphate is made by reacting phosphate rock with __________ acid. (A) Phosphoric (B) Nitric (C) Sulphuric (D) Hydrochloric

Last Answer : (A) Phosphoric

Triple superphosphate is manufactured by reacting (A) Phosphate rock with phosphoric acid (B) Phosphate rock with sulphuric acid (C) Phosphate rock with nitric acid (D) Ammonium phosphate with phosphoric acid

Description : Triple superphosphate is manufactured by reacting (A) Phosphate rock with phosphoric acid (B) Phosphate rock with sulphuric acid (C) Phosphate rock with nitric acid (D) Ammonium phosphate with phosphoric acid

Last Answer : (A) Phosphate rock with phosphoric acid

Phosphoric acid is prepared from (A) Cryolite (B) Chalcopyrite (C) Rock phosphate (D) None of these

Description : Phosphoric acid is prepared from (A) Cryolite (B) Chalcopyrite (C) Rock phosphate (D) None of these

Last Answer : (C) Rock phosphate

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)

Milk contains very poor amounts of (A) Calcium (B) Phosphate (C) Iron (D) Riboflavin

Description : Milk contains very poor amounts of (A) Calcium (B) Phosphate (C) Iron (D) Riboflavin

Last Answer : Answer : C

Pick out the wrong statement. (A) Indian coals on an average contain 25-30% ash as against 10-12% ash in imported coking coal (B) Ammonia is recovered in the form of ammonium sulphate in direct process of by-product recovery (C) A high swelling index number of coking coal indicates poor caking properties of coal (D) Wash oil is used for scrubbing Benzol from coke oven gas

Description : Pick out the wrong statement. (A) Indian coals on an average contain 25-30% ash as against 10-12% ash in imported coking coal (B) Ammonia is recovered in the form of ammonium sulphate in direct ... indicates poor caking properties of coal (D) Wash oil is used for scrubbing Benzol from coke oven gas

Last Answer : (C) A high swelling index number of coking coal indicates poor caking properties of coal

Fusion point of coal ash increases with increase in its __________ content. (A) Iron sulphate (B) Iron silicate (C) Lime and magnesia (D) All (A), (B) and (C)

Description : Fusion point of coal ash increases with increase in its __________ content. (A) Iron sulphate (B) Iron silicate (C) Lime and magnesia (D) All (A), (B) and (C)

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

Fertiliser produced during soda ash manufacture by dual process is ammonium (A) Chloride (B) Sulphate (C) Nitrate (D) None of these

Description : Fertiliser produced during soda ash manufacture by dual process is ammonium (A) Chloride (B) Sulphate (C) Nitrate (D) None of these

Last Answer : (A) Chloride

Sand and __________ is fused at 1300°C, to produce sodium silicate. (A) Limestone (B) Soda ash (C) Coke (D) Sodium sulphate

Description : Sand and __________ is fused at 1300°C, to produce sodium silicate. (A) Limestone (B) Soda ash (C) Coke (D) Sodium sulphate

Last Answer : (B) Soda ash

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