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

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
by

1 Answer

Answer :

(B) Roasting of sulphide ores
by

Related questions

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

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

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

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What are the major constituents of typical fly ash particles generated from the combustion of coal? w) acidic and basic oxides x) trace elements y) unburned carbon z) sulfates and phosphates

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Which of the following set of elements mostly occur as sulphide ores.

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Calcareous & argillaceous materials are used in the manufacture of (A) Lead (B) Cement (C) Carbon disulphide (D) None of these

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Reverberatory furnace is used for (A) Roasting/reduction of ores (B) Annealing steel coil (C) Heating air (D) Steel melting

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

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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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Froth floatation is the most suitable for treating (A) Iron ores (B) Sulphide ores (C) Quartzite (D) None of these

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There is practically no alternative/competitor to __________ in the beneficiation treatment of sulphide ores. (A) Classification (B) Tabling (C) Jigging (D) Froth floatation

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The operation of removal of impurities or clay adhering to iron ores, is known as (A) Dressing (B) Calcination (C) Roasting (D) Smelti

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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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Calcination of iron ores is done (A) To remove moisture (B) To remove carbonic acid (C) By roasting in heaps (D) All the above

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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

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

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

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Amongst the various ores of a metal (M) (sulphide, carbonates, oxides, hydrated or hydroxides) two ores [X] and [Y] show the following reactivity. (i)

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

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