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

The use of heat treatment of ore that includes smelting and roasting is termed as - (1) Electrometallurgy (2) Hydrometallurgy (3) Pyrometallurgy (4) Cryometallurgy
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(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 recovery of valuable metals. During pyrometallic processing, an ore after being beneficiated (concentrated by crushing, grinding, floating and drying), is sintered or roasted (calcined) with other materials such as baghouse dust and flux. The concentrate is then smelted, or melted, in a blast furnace in order to fuse the desired metals into impure molten bullion.
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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

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–

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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

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

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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

Assertion : Hydrometallurgy involves dissolving the ore in a suitable reagent followed by precipitation by a more electropositive metal. Reason : Copp

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Last Answer : Assertion : Hydrometallurgy involves dissolving the ore in a suitable reagent followed by precipitation ... : Copper is extracted by hydrometallurgy.

Electrometallurgy is not involved in the extraction of __________ from its ore. (A) Aluminium (B) Tin (C) Lead (D) Both (B) & (C)

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Last Answer : (D) Both (B) & (C)

The metallurgical process in which a metal is obtained in a fused state is called - (1) roasting (2) calcinations (3) smelting (4) froth floatation

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Shaft furnaces are used for (A) Smelting (B) Calcining (C) Roasting (D) All (A), (B) and (C)

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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

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Last Answer : (B) Coal based thermal power plants

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

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Pig iron is manufactured from the ores by (A) Dressing (B) Calcination and roasting (C) Smelting (D) All the above

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Copper is refined commercially by a process of: w) smelting x) electrolysis y) sublimation z) roasting

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Last Answer : ANSWER: X -- ELECTROLYSIS

Which of the following statements are true with respect to iron ore? 2. Limestone and coal are important for smelting iron ore 3. More than 20% of the world iron ore deposits are in India 4. Odisha and Jharkhand top in the production of iron ore 5. Iran is the largest buyer of Indian iron ore (a) I, II and III (b) II and III (c) III and IV (d) II, III and IV

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Last Answer : Ans: (a)

Which of the following minerals are required for smelting iron ore? (1) Limestone and gypsum (2) Manganese and limestone (3) Limestone and coal (4) Gypsum and coal

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Uranium is recovered from its ore (pitchblende) by (A) Froth floatation technique (B) Leaching with sulphuric acid (C) Smelting in a furnace (D) Dissolving in water

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Last Answer : (B) Leaching with sulphuric acid

__________ is used as a flux in the smelting of copper ore like chalcopyrite. (A) Coke breeze (B) Lime powder (C) Silica/quartz (D) Dolomite

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Flux addition during smelting of ore is done to (A) Remove impurities/gangue (B) Enhance rate of reaction (C) Accelerate reduction of ore (D) Separate slag from metal

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Which of the following minerals are required for smelting iron ore? (1) Limestone and gypsum (2) Manganese and limestone (3) Limestone and coal (4) Gypsum and coal

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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

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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

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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

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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

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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

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

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

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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

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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

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What is pyrometallurgy ?

Description : What is pyrometallurgy ?

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The function of neutral flux used in the pyrometallurgy of metal extraction is to increase the __________ of the slag. (A) Fluidity (B) Basicity (C) Acidity (D) Viscosity

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Last Answer : Option A

The function of neutral flux used in the pyrometallurgy of metal extraction is to increase the __________ of the slag. (A) Fluidity (B) Basicity (C) Acidity (D) Viscosity

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. A mineral is termed as 'ore', if (A) A metal can be economically extracted from it (B) It contains ≥ 40% metal (C) The metal present in it is costly (D) All (A), (B) and (C)

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One of the three groups of industrial products includes materials and parts. Which is not one of the material parts? a. farm products such as wheat b. natural products such as iron ore natural products such as iron ore c. nonraw materials d. petroleum

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Last Answer : c. nonraw materials

The register that includes the address of the memory unit is termed asthe _ a. MAR b PC Cc. IR d. None of these

Description : The register that includes the address of the memory unit is termed asthe _ a. MAR b PC Cc. IR d. None of these

Last Answer : a. MAR

5. In "Imperial Smelting Process" for extraction of zinc, zinc vapour thus produced is quenched in the external condenser by the use of the following: (A) Jet of water at high pressure (B) Blast of air (C) Mixture of water and air (D) Rain of molten lead

Description : 5. In "Imperial Smelting Process" for extraction of zinc, zinc vapour thus produced is quenched in the external condenser by the use of the following: (A) Jet of water at high pressure (B) Blast of air (C) Mixture of water and air (D) Rain of molten lead

Last Answer : Option D

Can you name some videos on Gold and Silver finding, smelting, and buying?

Description : Can you name some videos on Gold and Silver finding, smelting, and buying?

Last Answer : I have no idea personally but have you tried Ebay?

Where can one get the extensive knowledge needed for gold smelting and assaying?

Description : Where can one get the extensive knowledge needed for gold smelting and assaying?

Last Answer : answer:There are certainly books. A Bing search for the following string: gold smelting returns results on online information as well as books. Unfortunately, it's gotten to where searching on Google ... fascinating project and if you're able to follow through, can lead to a lucrative career.

I perk up when I see Gold smelting videos; is that a sign that I could be happy as a metalsmith?

Description : I perk up when I see Gold smelting videos; is that a sign that I could be happy as a metalsmith?

Last Answer : Define “perk up”

Name the aluminium smelting plants of India. -SST 10th

Description : Name the aluminium smelting plants of India. -SST 10th

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What are the prime factors in location of aluminium smelting industries? -SST 10th

Description : What are the prime factors in location of aluminium smelting industries? -SST 10th

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Name all the seven states of India where aluminium smelting plants are located. -SST 10th

Description : Name all the seven states of India where aluminium smelting plants are located. -SST 10th

Last Answer : (i) Odisha (ii) West Bengal (iii) Kerala (iv) Uttar Pradesh (v) Chhattisgarh (vi) Maharashtra (vii) Tamil Nadu

Describe in brief the aluminium smelting industry in India with emphasis on: -SST 10th

Description : Describe in brief the aluminium smelting industry in India with emphasis on: -SST 10th

Last Answer : (i) Three uses of aluminium: It combines the strength of metals such as iron, with extreme lightness and also with good conductivity and great malleability. It is used to manufacture aircraft, ... scale: Odisha West Bengal (iv) Annual Production: About 600 million tonnes per annum.

The chemical composition of slag formed during the smelting process in the extraction of copper is :-

Description : The chemical composition of slag formed during the smelting process in the extraction of copper is :-

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The chemical composition of slag formed during the smelting process in the extraction of copper is :-

Description : The chemical composition of slag formed during the smelting process in the extraction of copper is :-

Last Answer : The chemical composition of slag formed during the smelting process in the extraction of copper is :- A. `Cu_(2)O+ ... C. `CuFeS_(2)` D. `Cu_(2)S+FeO`