The chemical processes in the production of steel from haematite ore involve

The chemical processes in the production of steel from haematite ore involve
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The chemical processes in the production of steel from haematite ore involve A. Reduction B. ... by oxidation D. Oxidation followed by reduction
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The chemical process in the production of steel from haematite ore involves

Description : The chemical process in the production of steel from haematite ore involves

Last Answer : The chemical process in the production of steel from haematite ore involves A. Reducation B. ... by oxidation D. Oxidation followed by reduction

The chemical process in the production of steel from haematite ore involves

Description : The chemical process in the production of steel from haematite ore involves

Last Answer : The chemical process in the production of steel from haematite ore involves A. reduction B. ... by oxidation D. oxidation followed by reduction

The chemical process in the production of steel from haematite ore involves

Description : The chemical process in the production of steel from haematite ore involves

Last Answer : The chemical process in the production of steel from haematite ore involves A. reduction B. ... by oxidation D. oxidation followed by reduction

When the ore haematite is burnt in air with coke around `2000 K` along with lime, the process not only produces steel but also produces a silicate sla

Description : When the ore haematite is burnt in air with coke around `2000 K` along with lime, the process not only produces steel but also produces a silicate sla

Last Answer : When the ore haematite is burnt in air with coke around `2000 K` along with lime, the process not only produces ... 3)` C. `SiO_(2)` D. `CaCO_(3)`

Cost iron is prepared from haematite . In most of the Cases ore needs no concentration ,The ore is roasted to remove the volatile impurities ,During r

Description : Cost iron is prepared from haematite . In most of the Cases ore needs no concentration ,The ore is roasted to remove the volatile impurities ,During r

Last Answer : Cost iron is prepared from haematite . In most of the Cases ore needs no concentration ,The ore is roasted to ... molten slag `Fe_(2)(SiO_(3))_(3)`

Cost iron is prepared from haematite . In most of the Cases ore needs no concentration ,The ore is roasted to remove the volatile impurities ,During r

Description : Cost iron is prepared from haematite . In most of the Cases ore needs no concentration ,The ore is roasted to remove the volatile impurities ,During r

Last Answer : Cost iron is prepared from haematite . In most of the Cases ore needs no concentration ,The ore is roasted to remove ... is A. 10 B. 20 C. 30 D. 40

Cost iron is prepared from haematite . In most of the Cases ore needs no concentration ,The ore is roasted to remove the volatile impurities ,During r

Description : Cost iron is prepared from haematite . In most of the Cases ore needs no concentration ,The ore is roasted to remove the volatile impurities ,During r

Last Answer : Cost iron is prepared from haematite . In most of the Cases ore needs no concentration ,The ore is roasted to remove ... C` C. `FeC_(3)` D. `Fe_(2)C`

The reaction (s) which does (do) not occur in the reduction zone in the extraction of iron from haematite ore is (are)

Description : The reaction (s) which does (do) not occur in the reduction zone in the extraction of iron from haematite ore is (are)

Last Answer : The reaction (s) which does (do) not occur in the reduction zone in the extraction of iron from haematite ore ... ` D. `CaO + SiO_(2) rarr CaSiO_(3)`

Consider the following statements and arrange in the order of true/false as given in the codes.`S_(1)`: In extraction of iron from haematite ore, the

Description : Consider the following statements and arrange in the order of true/false as given in the codes.`S_(1)`: In extraction of iron from haematite ore, the

Last Answer : Consider the following statements and arrange in the order of true/false as given in the codes.`S_(1)`: In ... `. A. TFTT B. FTFF C. FFTT D. TFFT

The reaction (s) which does (do) not occur in the reduction zone in the extraction of iron from haematite ore is (are)

Description : The reaction (s) which does (do) not occur in the reduction zone in the extraction of iron from haematite ore is (are)

Last Answer : The reaction (s) which does (do) not occur in the reduction zone in the extraction of iron from haematite ore ... ` D. `CaO + SiO_(2) rarr CaSiO_(2)`

The reaction (s) which does (do) not occur in the reduction zone in the extraction of iron from haematite ore is (are)

Description : The reaction (s) which does (do) not occur in the reduction zone in the extraction of iron from haematite ore is (are)

Last Answer : The reaction (s) which does (do) not occur in the reduction zone in the extraction of iron from haematite ore ... ` D. `CaO + SiO_(2) rarr CaSiO_(3)`

The main reactions occuring in blast furnace during extraction of iron from haematite ore…..

Description : The main reactions occuring in blast furnace during extraction of iron from haematite ore…..

Last Answer : The main reactions occuring in blast furnace during extraction of iron from haematite ore .. A. `Fe_(2)O_ ... 3Cto2Fe+3CO` D. `CaO+SiO_(2)toCaSiO_(2)`

Which of the following is an ore of iron? (a) Bauxite (b) Haematite (c) Dolomite (d) Alunite

Description : Which of the following is an ore of iron? (a) Bauxite (b) Haematite (c) Dolomite (d) Alunite

Last Answer : Ans: (b)

The most important ore of aluminium is (a) Bauxite (b) Magnetite (c) Haematite (d) Monazite

Description : The most important ore of aluminium is (a) Bauxite (b) Magnetite (c) Haematite (d) Monazite

Last Answer : Ans:(a)

Which mineral is the ore of aluminium? (1) Haematite (2) Bauxite (3) Magnetite (4) Siderite

Description : Which mineral is the ore of aluminium? (1) Haematite (2) Bauxite (3) Magnetite (4) Siderite

Last Answer : (2) Bauxite Explanation: Bauxite is an aluminium ore and is the main source of aluminium. Approximately 70% to 80% of the world's dry bauxite production is processed first into alumina, and then into aluminium by electrolysis.

The iron ore which contains 72% of iron is – (1) Magnetite (2) Limonite (3) Haematite (4) Siderite

Description : The iron ore which contains 72% of iron is – (1) Magnetite (2) Limonite (3) Haematite (4) Siderite

Last Answer : (1) Magnetite Explanation: Iron (Fe) is a metallic element and composes about 5% of the Earth's crust. When pure it is a dark, silvery-gray metal. It is a very reactive element ... alloy. Iron-nickel meteorites are believed to represent the earliest material formed at the beginning of the universe.

The important ore of aluminium is – (1) bauxite (2) cryolite (3) fluorspar (4) haematite

Description : The important ore of aluminium is – (1) bauxite (2) cryolite (3) fluorspar (4) haematite

Last Answer : (1) bauxite Explanation: Bauxite is an aluminium ore and is the main source of aluminium. This form of rock consists mostly of the minerals gibbsite, boehmite and diaspore , in a mixture ... it was first recognized as containing aluminium and named by the French geologist Pierre Berthier in 1821.

__________ is used as a flux in the extraction of iron from iron ore (haematite) in blast furnace. (A) Bauxite (B) Limestone (C) Quartz (D) Manganese

Description : __________ is used as a flux in the extraction of iron from iron ore (haematite) in blast furnace. (A) Bauxite (B) Limestone (C) Quartz (D) Manganese

Last Answer : (B) Limestone

Which mineral is the ore of aluminium ? (1) Haematite (2) Bauxite (3) Magnetite (4) Siderite

Description : Which mineral is the ore of aluminium ? (1) Haematite (2) Bauxite (3) Magnetite (4) Siderite

Last Answer : Bauxite

The iron ore which contains 72% of iron is : (1) Magnetite (2) Limonite (3) Haematite (4) Siderite

Description : The iron ore which contains 72% of iron is : (1) Magnetite (2) Limonite (3) Haematite (4) Siderite

Last Answer : Magnetite

The important ore of aluminium is (1) bauxite (2) cryolite (3) fluorspar (4) haematite

Description : The important ore of aluminium is (1) bauxite (2) cryolite (3) fluorspar (4) haematite

Last Answer : bauxite

Extraction of `Ag` from sulphide ore and removal of unreacted silver bromide from phorographic plate involve complexes:

Description : Extraction of `Ag` from sulphide ore and removal of unreacted silver bromide from phorographic plate involve complexes:

Last Answer : Extraction of `Ag` from sulphide ore and removal of unreacted silver bromide from phorographic plate involve ... (3))_(2)]^(3-)` respectively

In the kidney , the formation of urine involve the following processes arranged as

Description : In the kidney , the formation of urine involve the following processes arranged as

Last Answer : In the kidney , the formation of urine involve the following processes arranged as A. ... and filtration D. Filtration ,secreton and reabsorption

In the kidney , the formation of urine involve the following processes arranged as

Description : In the kidney , the formation of urine involve the following processes arranged as

Last Answer : In the kidney , the formation of urine involve the following processes arranged as A. ... and filtration D. Filtration, secretion, and reabsorption

In the kidney , the formation of urine involve the following processes arranged as

Description : In the kidney , the formation of urine involve the following processes arranged as

Last Answer : In the kidney , the formation of urine involve the following processes arranged as A. ... and reabsorption D. Secretion, absorption, and filtration

which of the following processes involve smelting

Description : which of the following processes involve smelting

Last Answer : which of the following processes involve smelting A. `ZnCO_(3)overset("Heat")toZnO+CO_(2)` B. `2PbS+3O_ ... . `Fe_(2)O_(3)+3Coverset("Heat")to2Fe+3CO`

Three basic raw materials which are needed in large quantities for production of steel are (A) Iron ore, coal and sulphur (B) Iron ore, carbon and sulphur (C) Iron ore, coal and lime stone (D) Iron ore, carbon and lime stone

Description : Three basic raw materials which are needed in large quantities for production of steel are (A) Iron ore, coal and sulphur (B) Iron ore, carbon and sulphur (C) Iron ore, coal and lime stone (D) Iron ore, carbon and lime stone

Last Answer : Answer: Option C

Low purity oxygen is used for(A) L.D. steel making(B) Cutting and welding of metals(C) Medicinal purposes(D) Chemical oxidation processes

Description : Low purity oxygen is used for (A) L.D. steel making (B) Cutting and welding of metals (C) Medicinal purposes (D) Chemical oxidation processes

Last Answer : (D) Chemical oxidation processes

What is the Chemical processes that causes that causes the production of ignitable vapors from solid wood?

Description : What is the Chemical processes that causes that causes the production of ignitable vapors from solid wood?

Last Answer : Pyrolysis

Of the following processes in nature, which one involves only a physical change A. A bird digests a worm. B. Photosynthesis occurs in a leaf. C. An earthquake causes a rockslide. D. A chunk of iron ore rusts.?

Description : Of the following processes in nature, which one involves only a physical change A. A bird digests a worm. B. Photosynthesis occurs in a leaf. C. An earthquake causes a rockslide. D. A chunk of iron ore rusts.?

Last Answer : C: An Earthquake causes a rockslide

Which jobs involve production design?

Description : Which jobs involve production design?

Last Answer : A career in Film, theatre, or TV would involve production design. You can get a list of these jobs at jobsearch.monster.com/Product-Designer/get-jobs-5.aspx. Production design can go into various ... and industries. Some of the popular are in fashion and in technology which are also the profitable.

A chemical change may involve -Science-7

Description : A chemical change may involve -Science-7

Last Answer : 4. Any or all of the above is correct.

With regard to the physics of power systems used operate robots, which statement or statements are most correct? a) hydraulics involves the compression of liquids b) hydraulics involves the compression of air c) pneumatics involve the compression of air d) chemical batteries produce AC power

Description : With regard to the physics of power systems used operate robots, which statement or statements are most correct? a) hydraulics involves the compression of liquids b) hydraulics involves the compression of air c) pneumatics involve the compression of air d) chemical batteries produce AC power

Last Answer : c) pneumatics involve the compression of air

Pick out the wrong statement. (A) Catalytic activity of enzyme catalysed reactions which is affected by temperature, pH value & chemical agents, is maximum at a temperature of about 45°C(B) Most of the enzyme catalysed reactions involve at least two substrates (C) Enzymes help in increasing the activation energy of the reaction (D) Equilibrium concentrations in enzyme catalysed reactions can be calculated by using the thermodynamic properties of substrates & prod

Description : Pick out the wrong statement. (A) Catalytic activity of enzyme catalysed reactions which is affected by temperature, pH value & chemical agents, is maximum at a temperature of about 45°C ... in enzyme catalysed reactions can be calculated by using the thermodynamic properties of substrates & prod

Last Answer : (C) Enzymes help in increasing the activation energy of the reaction

Assertion: Wrough iron is prepared from cast iron by oxidising impurities in a reverberatory furnace lined with haematite. Reason: Haematite oxidises

Description : Assertion: Wrough iron is prepared from cast iron by oxidising impurities in a reverberatory furnace lined with haematite. Reason: Haematite oxidises

Last Answer : Assertion: Wrough iron is prepared from cast iron by oxidising impurities in a reverberatory furnace lined ... -1 is false but Statement -2 is true

Consider the following statements in the extraction of iron from haematite: (I) `CO`is the main reducing agent (II) `Fe_(2)O_(3)`is used to oxidise th

Description : Consider the following statements in the extraction of iron from haematite: (I) `CO`is the main reducing agent (II) `Fe_(2)O_(3)`is used to oxidise th

Last Answer : Consider the following statements in the extraction of iron from haematite: (I) `CO`is the main reducing agent (II) ... I, II and III D. I, II and IV

The flux used in the extraction of iron from Haematite in te blast furnace is `"["EAM(ENG)2014"]"`

Description : The flux used in the extraction of iron from Haematite in te blast furnace is `"["EAM(ENG)2014"]"`

Last Answer : The flux used in the extraction of iron from Haematite in te blast furnace is `"["EAM(ENG)2014"]"` A. Lime stone B. Silica C. Coke D. CO

The slag formed in the blast furnace during the extraction of iron from haematite is

Description : The slag formed in the blast furnace during the extraction of iron from haematite is

Last Answer : The slag formed in the blast furnace during the extraction of iron from haematite is A. `Ca_(3)(PO_(4))_(2)` ... (3)` C. `FeSiO_(3)` D. `MnSiO_(3)`

In the extraction of iron from haematitie, the charge used is haematite, coke and lime stone in the following weight ration

Description : In the extraction of iron from haematitie, the charge used is haematite, coke and lime stone in the following weight ration

Last Answer : In the extraction of iron from haematitie, the charge used is haematite, coke and lime stone in the following weight ration ... C. `8:1:4` D. `1:4:8`

A mixture of haematite, coke and limestone on heating in blast furnace gives molten iron metal. This is known as

Description : A mixture of haematite, coke and limestone on heating in blast furnace gives molten iron metal. This is known as

Last Answer : A mixture of haematite, coke and limestone on heating in blast furnace gives molten iron metal. ... Smelting B. Calcination C. Roasting D. Liquition

Iron is extracted from - (1) Cinnabar (2) Haematite (3) Bauxite (4) Dolomite

Description : Iron is extracted from - (1) Cinnabar (2) Haematite (3) Bauxite (4) Dolomite

Last Answer : (2) Haematite Explanation: Haematite is mined as the main ore of iron. It is harder than pure iron, but much more brittle. It is coloured black to steel or silver-gray, brown to reddish brown, or red.

Which of the following ores does not contain iron? (1) Haematite (2) Magnetite (3) Limonite (4) Cassiterite

Description : Which of the following ores does not contain iron? (1) Haematite (2) Magnetite (3) Limonite (4) Cassiterite

Last Answer : (4) Cassiterite

Which one of the following mineral does not contain oxygen? (1) Haematite (2) Bauxite (3) Cryolite (4) Calcite

Description : Which one of the following mineral does not contain oxygen? (1) Haematite (2) Bauxite (3) Cryolite (4) Calcite

Last Answer : (3) Cryolite Explanation: Cryolite (Na3AlF6, sodium hexafluoroaluminate) does not contain oxygen. It occurs as glassy, colorless, white-reddish to gray-black prismatic monoclinic crystals. Cryolite is used as an insecticide and a pesticide. It is also used to give fireworks a yellow color.

Which one of the following pairs is NOT correctly matched? (1) Haematite : Copper (2) Bauxite : Aluminium (3) Monazite : Thorium (4) Pitchblende : Uranium

Description : Which one of the following pairs is NOT correctly matched? (1) Haematite : Copper (2) Bauxite : Aluminium (3) Monazite : Thorium (4) Pitchblende : Uranium

Last Answer : (1) Haematite : Copper Explanation: Haematite is the mineral form of iron oxide (Fe2O3), one of several iron oxides. It is mined as the main ore of iron. Hematite is harder than pure iron, but much more brittle.

State the role of lime stone in the extraction of iron from haematite. Or Why is lime stone added during the extraction of iron?

Description : State the role of lime stone in the extraction of iron from haematite. Or Why is lime stone added during the extraction of iron?

Last Answer : Limestone reacts with the sand present as impurity in the ore forming calcium silicate which is taken out of the blast furnace as slag.

Minimum of 40% of iron, is available in (A) Magnetite (B) Red haematite (C) Limonite (D) Black band

Description : Minimum of 40% of iron, is available in (A) Magnetite (B) Red haematite (C) Limonite (D) Black band

Last Answer : Answer: Option D

The cast iron when heated to red heat with powdered red haematite in an oven for increasing its toughness, is converted to (A) Grey cast iron (B) White cast iron (C) Mottled cast iron (D) Toughed cast iron

Description : The cast iron when heated to red heat with powdered red haematite in an oven for increasing its toughness, is converted to (A) Grey cast iron (B) White cast iron (C) Mottled cast iron (D) Toughed cast iron

Last Answer : Answer: Option C

Pig iron made from haematite ores free from sulphur, phosphorus and copper, is known as (A) Bessemer pig (B) Grey or foundry pig (C) White or forge pig (D) Mottled pig

Description : Pig iron made from haematite ores free from sulphur, phosphorus and copper, is known as (A) Bessemer pig (B) Grey or foundry pig (C) White or forge pig (D) Mottled pig

Last Answer : Answer: Option A

Which one of the following mineral does not contain oxygen ? (1) Haematite (2) Bauxite (3) Cryolite (4) Calcite

Description : Which one of the following mineral does not contain oxygen ? (1) Haematite (2) Bauxite (3) Cryolite (4) Calcite

Last Answer : Cryolite

Iron is extracted from (1) Cinnabar (2) Haematite (3) Bauxite (4) Dolomite

Description : Iron is extracted from (1) Cinnabar (2) Haematite (3) Bauxite (4) Dolomite

Last Answer : Haematite