Which of the following metals can be oriented directly during the roasting of its sulphide ore

Which of the following metals can be oriented directly during the roasting of its sulphide ore
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Which of the following metals can be oriented directly during the roasting of its sulphide ore A. Hg B. Zn C. Fe D. Ca
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(A) Roasting is a process in which the ore is heate in presence of air (R ) Concentration of sulphide ore is done by calcinaiton

Description : (A) Roasting is a process in which the ore is heate in presence of air (R ) Concentration of sulphide ore is done by calcinaiton

Last Answer : (A) Roasting is a process in which the ore is heate in presence of air (R ) Concentration of sulphide ... . If (A) is incorrect but (R ) is correct

The product (s) of roasting of a sulphide ore is (are) (A) Oxide only (B) Sulphate only (C) Oxide and sulphate (D) Dependent on temperature and partial pressure of oxygen & sulphur dioxide

Description : The product (s) of roasting of a sulphide ore is (are) (A) Oxide only (B) Sulphate only (C) Oxide and sulphate (D) Dependent on temperature and partial pressure of oxygen & sulphur dioxide

Last Answer : (A) Oxide only

Which of the following faction is of no significance for roasting sulphide ores to the oxide and not subjecting the sulphide ores in carbon reduction

Description : Which of the following faction is of no significance for roasting sulphide ores to the oxide and not subjecting the sulphide ores in carbon reduction

Last Answer : Which of the following faction is of no significance for roasting sulphide ores to the oxide and ... are thermodynamically more stable than `CS_(2)`

The main industrial source of emission of hydrogen sulphide air pollutant is (A) Petroleum refineries (B) Coal based thermal power plants (C) Pulp and paper plant (D) Metallurgical roasting & smelting plant

Description : The main industrial source of emission of hydrogen sulphide air pollutant is (A) Petroleum refineries (B) Coal based thermal power plants (C) Pulp and paper plant (D) Metallurgical roasting & smelting plant

Last Answer : (B) Coal based thermal power plants

Unreacted core model' represents the reaction involving (A) Combustion of coal particles (B) Roasting of sulphide ores (C) Manufacture of carbon disulphide from elements (D) None of these

Description : Unreacted core model' represents the reaction involving (A) Combustion of coal particles (B) Roasting of sulphide ores (C) Manufacture of carbon disulphide from elements (D) None of these

Last Answer : (B) Roasting of sulphide ores

Concentration of sulphide ores is done usually by (A) Roasting (B) Smelting (C) Froth floatation (D) Electromagnetic separation

Description : Concentration of sulphide ores is done usually by (A) Roasting (B) Smelting (C) Froth floatation (D) Electromagnetic separation

Last Answer : (C) Froth floatation

Heating of a ore below its melting point in the absence of air is known as – (1) Refining (2) Calcination (3) Roasting (4) Smelting

Description : Heating of a ore below its melting point in the absence of air is known as – (1) Refining (2) Calcination (3) Roasting (4) Smelting

Last Answer : (2) Calcination Explanation: Calcination involves simple decomposition of ore on heating below its melting point usually in absence of air to produce new compounds having higher percentage of ... as removing the moisture, organic matter and volatile impurities. Calcination makes the ore porous.

Sulphur removal by heating of pyrite ore in presence of air is called its (A) Reduction (B) Roasting (C) Calcination (D) Smelting

Description : Sulphur removal by heating of pyrite ore in presence of air is called its (A) Reduction (B) Roasting (C) Calcination (D) Smelting

Last Answer : (B) Roasting

Heating of a ore below its melting point in the absence of air is known as (1) Refining (2) Calcination (3) Roasting (4) Smelting

Description : Heating of a ore below its melting point in the absence of air is known as (1) Refining (2) Calcination (3) Roasting (4) Smelting

Last Answer : Calcination

Extraction of copper is done using copper pyrites. After roasting, the ore is mixed with silica and coke and then smelted in a blast furnace. The matt

Description : Extraction of copper is done using copper pyrites. After roasting, the ore is mixed with silica and coke and then smelted in a blast furnace. The matt

Last Answer : Extraction of copper is done using copper pyrites. After roasting, the ore is mixed with silica and coke and ... D. `Cu_(2)O +FeO`(large amount).

Extraction of copper is done using copper pyrites. After roasting, the ore is mixed with silica and coke and then smelted in a blast furnace. The matt

Description : Extraction of copper is done using copper pyrites. After roasting, the ore is mixed with silica and coke and then smelted in a blast furnace. The matt

Last Answer : Extraction of copper is done using copper pyrites. After roasting, the ore is mixed with silica and coke and then ... CaSiO_(3)` D. `Cu_(2)O.SiO_(2)`

Extraction of copper is done using copper pyrites. After roasting, the ore is mixed with silica and coke and then smelted in a blast furnace. The matt

Description : Extraction of copper is done using copper pyrites. After roasting, the ore is mixed with silica and coke and then smelted in a blast furnace. The matt

Last Answer : Extraction of copper is done using copper pyrites. After roasting, the ore is mixed with silica and coke and ... (3)` D. To check the reduction of FeO

Extraction of copper is done using copper pyrites. After roasting, the ore is mixed with silica and coke and then smelted in a blast furnace. The matt

Description : Extraction of copper is done using copper pyrites. After roasting, the ore is mixed with silica and coke and then smelted in a blast furnace. The matt

Last Answer : Extraction of copper is done using copper pyrites. After roasting, the ore is mixed with silica and coke and then ... O` D. `CuCO_(3).Cu(OH)_(2)`

Choose the correct option the code regarding roasting process. (I) It is the process of heating the ore in air in a reverberatory furnace to obtain th

Description : Choose the correct option the code regarding roasting process. (I) It is the process of heating the ore in air in a reverberatory furnace to obtain th

Last Answer : Choose the correct option the code regarding roasting process. (I) It is the process of heating the ore in air ... III and IV D. I , II , III and IV

Roasting of copper ore is carried out in which of the following furnace?

Description : Roasting of copper ore is carried out in which of the following furnace?

Last Answer : Roasting of copper ore is carried out in which of the following furnace? A. Reverberatory furnace B. ... furnace or blast furnace D. Neither 1 nor 2

The use of heat treatment of ore that includes smelting and roasting is termed as - (1) Electrometallurgy (2) Hydrometallurgy (3) Pyrometallurgy (4) Cryometallurgy

Description : The use of heat treatment of ore that includes smelting and roasting is termed as - (1) Electrometallurgy (2) Hydrometallurgy (3) Pyrometallurgy (4) Cryometallurgy

Last Answer : (3) Pyrometallurgy Explanation: Pyrometallurgy consists of the thermal treatment of minerals and metallurgical ores and concentrates to bring about physical and chemical transformations in the materials to enable ... in a blast furnace in order to fuse the desired metals into impure molten bullion.

The use of Heat treatment of ore that includes smelting and roasting is termed as–

Description : The use of Heat treatment of ore that includes smelting and roasting is termed as–

Last Answer : Pyrometallurgy

Roasting of metallurgical ores is done mainly to (A) Dehydrate it (B) Sinter the ore (C) Remove CO2 & H2O (D) Remove arsenic & sulphur

Description : Roasting of metallurgical ores is done mainly to (A) Dehydrate it (B) Sinter the ore (C) Remove CO2 & H2O (D) Remove arsenic & sulphur

Last Answer : (D) Remove arsenic & sulphur

__________ is an ore concentrating metallurgical process involving a chemical change. (A) Electromagnetic separation (B) Froth floatation (C) Roasting (D) None of these

Description : __________ is an ore concentrating metallurgical process involving a chemical change. (A) Electromagnetic separation (B) Froth floatation (C) Roasting (D) None of these

Last Answer : (C) Roasting

Iron ore hematite is concentrated using (A) Electromagnetic separation mainly (B) Gravity separation (C) Froth floatation (D) Roasting

Description : Iron ore hematite is concentrated using (A) Electromagnetic separation mainly (B) Gravity separation (C) Froth floatation (D) Roasting

Last Answer : (B) Gravity separation

Which of the following is an ore dressing operation? (A) Classification (B) Smelting (C) Roasting (D) None of these

Description : Which of the following is an ore dressing operation? (A) Classification (B) Smelting (C) Roasting (D) None of these

Last Answer : Option A

Pick up the correct statement from the following: (A) Roasting is not necessary if iron ore is an oxide (B) Impurities float on the molten iron as slag (C) The slag contains lime about 45% (D) All the above

Description : Pick up the correct statement from the following: (A) Roasting is not necessary if iron ore is an oxide (B) Impurities float on the molten iron as slag (C) The slag contains lime about 45% (D) All the above

Last Answer : Answer: Option D

The use of heat treatment of ore that includes smelting and roasting is termed as : (1) Electrometallurgy (2) Hydrometallurgy (3) Pyrometallurgy (4) Cryometallurgy

Description : The use of heat treatment of ore that includes smelting and roasting is termed as : (1) Electrometallurgy (2) Hydrometallurgy (3) Pyrometallurgy (4) Cryometallurgy

Last Answer : Pyrometallurgy

A sulphide ore is first converted into its oxide before reduction. This is done because :

Description : A sulphide ore is first converted into its oxide before reduction. This is done because :

Last Answer : A sulphide ore is first converted into its oxide before reduction. This is done because : A ... oxide is generally less stable than the metal sulphide

In the extraction of Cu from its sulphide ore, the metal is formed by reduction of `Cu_(2)O` with

Description : In the extraction of Cu from its sulphide ore, the metal is formed by reduction of `Cu_(2)O` with

Last Answer : In the extraction of Cu from its sulphide ore, the metal is formed by reduction of `Cu_(2)O` with A. FeS B. CO C. `Cu_(2)S` D. `SO_(2)`

(A) Auto reduction of ore is used for the extraction of copper (R ) The sulphide ore of copper reacts with its oxide to the give the metal

Description : (A) Auto reduction of ore is used for the extraction of copper (R ) The sulphide ore of copper reacts with its oxide to the give the metal

Last Answer : (A) Auto reduction of ore is used for the extraction of copper (R ) The sulphide ore of copper reacts ... . If (A) is incorrect but (R ) is correct

In the extraction of Cu from its sulphide ore, the metal is formed by reduction of `Cu_(2)O` with

Description : In the extraction of Cu from its sulphide ore, the metal is formed by reduction of `Cu_(2)O` with

Last Answer : In the extraction of Cu from its sulphide ore, the metal is formed by reduction of `Cu_(2)O` with A. FeS B. CO C. `Cu_(2)S` D. `SO_(2)`

Assertion : Froth flatation process is used to concentrate sulphide ores. Reason : There is a difference in the nature of wettibility of different ore

Description : Assertion : Froth flatation process is used to concentrate sulphide ores. Reason : There is a difference in the nature of wettibility of different ore

Last Answer : Assertion : Froth flatation process is used to concentrate sulphide ores. Reason : There is a difference ... -1 is false but Statement -2 is true

Froth floatation process for the concentration of sulphide ore is an illustration of the practical application of

Description : Froth floatation process for the concentration of sulphide ore is an illustration of the practical application of

Last Answer : Froth floatation process for the concentration of sulphide ore is an illustration of the practical ... B. absorption C. sedimentation D. cogulation

Which of the folowing is a sulphide ore?

Description : Which of the folowing is a sulphide ore?

Last Answer : Which of the folowing is a sulphide ore? A. Magnetite B. Haematite C. Calamine D. Ironpyrites

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

The most suitable method for extraction of copper from low grade sulphide ore is

Description : The most suitable method for extraction of copper from low grade sulphide ore is

Last Answer : The most suitable method for extraction of copper from low grade sulphide ore is A. Smelting ... process C. Leaching process D. Electrolytic process

Froth floatation process used for the concentration of sulphide ore. Which of the following statements are correct (a) It is based on the difference i

Description : Froth floatation process used for the concentration of sulphide ore. Which of the following statements are correct (a) It is based on the difference i

Last Answer : Froth floatation process used for the concentration of sulphide ore. Which of the following statements are correct (a) ... . (a), (b) ( c) are correct

Froth floatation process for the concentration of sulphide ore is an illustration of the practical application of

Description : Froth floatation process for the concentration of sulphide ore is an illustration of the practical application of

Last Answer : Froth floatation process for the concentration of sulphide ore is an illustration of the practical ... B. absorption C. sedimentation D. coagulateion

Which one of the following does not occurs as sulphide ore

Description : Which one of the following does not occurs as sulphide ore

Last Answer : Which one of the following does not occurs as sulphide ore A. Zn B. Cr C. Ag D. Fe

Describe the method used for concentration of sulphide ore.

Description : Describe the method used for concentration of sulphide ore. 

Last Answer : Process : In this process, the powdered sulphide ore is mixed with water & pine oil. The whole mixture is then stirred vigorously by passing compressed air. The oil forms a froth with air ... ; sink to the bottom of the tank. The floating froth is then skimmed off into settling basins.

Statement-1: Auto reduction of ores is used for cinnabar, copper glance and Galena ores Statement-2:The sulphide ores of these metals react with their

Description : Statement-1: Auto reduction of ores is used for cinnabar, copper glance and Galena ores Statement-2:The sulphide ores of these metals react with their

Last Answer : Statement-1: Auto reduction of ores is used for cinnabar, copper glance and Galena ores Statement-2: ... Statement-1 is false but Statement -2 is true

Which of the following metals can be obtained from its ore only by electrolysis of a molten salt ? w) cobalt x) chromium y) copper z) sodium

Description : Which of the following metals can be obtained from its ore only by electrolysis of a molten salt ? w) cobalt x) chromium y) copper z) sodium

Last Answer : ANSWER: Z -- SODIUM

Which of the following metals is obtained from its most common ore using an electrolytic process? w) nickel x) tin y) aluminum z) manganese

Description : Which of the following metals is obtained from its most common ore using an electrolytic process? w) nickel x) tin y) aluminum z) manganese

Last Answer : ANSWER: Y -- ALUMINUM

Which of the following are method of concentration of ore is metals?

Description : Which of the following are method of concentration of ore is metals?

Last Answer : Which of the following are method of concentration of ore is metals? A. girvity ... floation process C. electromagnetic separation D. smelting

The common method for the extraction of metals from the oxide ore is :

Description : The common method for the extraction of metals from the oxide ore is :

Last Answer : The common method for the extraction of metals from the oxide ore is : A. Reduction with carbon B. ... . reduction with `H_(2)` D. electrolytic method

India is particularly poor in reserves of (a) coal (b) iron ore (c) non-ferrous metals (d) limestone

Description : India is particularly poor in reserves of (a) coal (b) iron ore (c) non-ferrous metals (d) limestone

Last Answer : Ans: (c)

The ore only two metals that are Non–Silver in colour, they are–

Description : The ore only two metals that are Non–Silver in colour, they are–

Last Answer : Copper and gold

Method of separating metals which have low melting point I from an ore is?

Description : Method of separating metals which have low melting point I from an ore is?

Last Answer : Liquation

Electrometallurgical methods of metal extraction is normally used for those metals (A) Whose oxide/ore is not reduced by carbon (B) Which fall in the category of alkali & alkaline earth metals (C) Which stands higher in the electrochemical series of the metal (D) All (A), (B) & (C)

Description : Electrometallurgical methods of metal extraction is normally used for those metals (A) Whose oxide/ore is not reduced by carbon (B) Which fall in the category of alkali & alkaline earth metals (C) Which stands higher in the electrochemical series of the metal (D) All (A), (B) & (C)

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

Sphalerite is a primary ore of which of the following metals? w) zinc x) tin y) copper z) iron

Description : Sphalerite is a primary ore of which of the following metals? w) zinc x) tin y) copper z) iron

Last Answer : ANSWER: W -- ZINC

Galena is a primary ore of which of the following metals? w) zinc x) tungsten y) lead z) silver

Description : Galena is a primary ore of which of the following metals? w) zinc x) tungsten y) lead z) silver

Last Answer : ANSWER: Y -- LEAD

Hematite is a primary ore of which of the followin metals? w) zinc x) tungsten y) iron z) none of the above

Description : Hematite is a primary ore of which of the followin metals? w) zinc x) tungsten y) iron z) none of the above

Last Answer : ANSWER: Y -- IRON

Give reason: Sand is used during roasting and as sand bath in chemical reactions.

Description : Give reason: Sand is used during roasting and as sand bath in chemical reactions.

Last Answer : As silicon has high thermal and non combustible property.

Fast breeder test reactor at Kalpakkam (INDIA) is designed for using (A) Thorium as a fertile material (B) U-238 as a fertile material (C) Helium as a coolant (D) Uranium ore directly as a fuel

Description : Fast breeder test reactor at Kalpakkam (INDIA) is designed for using (A) Thorium as a fertile material (B) U-238 as a fertile material (C) Helium as a coolant (D) Uranium ore directly as a fuel

Last Answer : (A) Thorium as a fertile material