Description : The final step for the extraction of copper from copper pyrite in Bessemer converter involves the reaction
Last Answer : The final step for the extraction of copper from copper pyrite in Bessemer converter involves the reaction A. ` ... D. `2Cu_(2)O+FeSto4Cu+Fe+SO_(2)`
Description : Which of the following reaction(s) take place in Bessemer converter for the extraction of Cu?
Last Answer : Which of the following reaction(s) take place in Bessemer converter for the extraction of Cu? A. `2CuFeS_(2) + ... ` D. `FeO + SiO_(2) rarr FeSiO_(3)`
Description : (i) Copper - Bessemer converter (ii) Iorpn- Blastfurnace (iii) chromium - Aluminothermic process (iv) Tin - Carbon reducaton (v) Zinc -Belgian process
Last Answer : (i) Copper - Bessemer converter (ii) Iorpn- Blastfurnace (iii) chromium - Aluminothermic process (iv ... data how many of them are correctly matched ?
Description : In Bessemer converter `Cu_(2)S` is converted in to blister copper in
Last Answer : In Bessemer converter `Cu_(2)S` is converted in to blister copper in A. self reduction B. reduction with ... coal gas D. reduction with `H_(2)` gas
Description : Pick up the correct statement from the following: (A) In basic Bessemer process, the steel heats the converter (B) In open-hearth process, the furnace heats the steel (C) In Siemens process, the impurities of pig iron are oxidised by the oxygen of the ore (D) All the above
Last Answer : Answer: Option D
Description : Which of the following reactions is not involved in extraction of Cu from copper pyrite ?
Last Answer : Which of the following reactions is not involved in extraction of Cu from copper pyrite ? A. `Cu_(2)S * Fe_(2 ... 2)` D. `FeO+ SiO_(2) rarr FeSiO_(3)`
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
Description : Which of the following reduction reactions are actually employed in commercial extraction of metals ?
Last Answer : Which of the following reduction reactions are actually employed in commercial extraction of metals ? A. `Fe_(2 ... + 2CuO rarr 3Cu + SO_(2) uparrow `
Description : Which of the following reduction reactions are actually employed in commercial extraction of metals?
Last Answer : Which of the following reduction reactions are actually employed in commercial extraction of metals? A. `Fe_(2)O_(3 ... (2)S + 2CuO rarr 6Cu + SO_(2)`
Description : Identify the metal `M` whose extraction is based on the following reactions: `MS +2O_(2)rarr MSO_(4)` `2MS +3O_(2)rarr 2MO +2SO_(2)` `MS +2MO rarr 3M
Last Answer : Identify the metal `M` whose extraction is based on the following reactions: `MS +2O_(2)rarr MSO_(4)` `2MS + ... 4),Pb, PbO` D. `PbS,PbSO_(4) , PbO`
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)`
Description : How did the Bessemer process lead to a boom in the railroads?
Last Answer : What is the answer ?
Description : Which is the purest form of iron? (A) Wrought iron (B) Pig iron (C) Bessemer iron (D) Grey iron
Last Answer : (A) Wrought iron
Description : In the acid Bessemer process, the hot metal should have the following composition. (A) S < 0.05% and P < 0.05% (B) S < 0.05% and P < 1.5% (C) S < 0.05% and P > 1.5% (D) S > 1.5% and P < 0.05%
Last Answer : (A) S < 0.05% and P < 0.05%
Description : Pig iron obtained from the furnace which is properly provided with fuel at a very high temperature, is called (A) Bessemer pig (B) Grey or foundry pig (C) White or forge pig (D) Mottled pig
Last Answer : Answer: Option B
Description : For light and ornamental casting, the most unsuitable pig iron, is (A) Bessemer pig (B) Grey or foundry pig (C) White or forge pig (D) Mottled pig
Description : Softer variety of steel may be obtained by (A) Cementation process (B) Crucible process (C) Bessemer process (D) Open hearth
Last Answer : Answer: Option C
Description : Bessemer process is used for the manufacture of (A) Pig iron (B) Cast iron (C) Wrought iron D) Steel
Description : The variety of pig iron used for the manufacture of steel by Bessemer process, is (A) Bessemer pig (B) Grey pig (C) White forge pig (D) Mottled pig
Description : If the furnace is provided with insufficient fuel at low temperatures, the type of pig iron produced, is called (A) Bessemer pig (B) Grey or foundry pig (C) White or forge pig (D) Mottled pig
Description : The steel which contains fissures and cavities, is manufactured by (A) Cementation process (B) Crucible process (C) Bessemer process (D) Open hearth process
Description : Pick up the correct statement from the following: (A) Steel produced by open hearth process is milder than that obtained by the Bessemer process (B) Engineers prefer open hearth steel ... is suitable for converting poor ore containing a large proportion of sulphur and phosphorus into steel
Description : For high grade instruments the steel preferred to, is (A) Cast steel (B) Bessemer steel (C) Mild steel (D) Whitworth compressed steel
Description : The process of manufacturing steel by heating short lengths of wrought iron bars mixed with charcoal in fire clay crucibles and collecting the molten iron into moulds, is known as (A) Cementation process (B) Crucible process (C) Bessemer process (D) Open hearth process
Description : The variety of pig iron used for manufacture of wrought iron, is (A) Bessemer pig (B) Grey or foundry pig (C) White forge pig (D) Mottled pig
Description : The process of decarbonising the pig iron completely and then adding proper percentage of carbon for manufacturing steel, is called (A) Cementation process (B) Crucible process (C) Bessemer process (D) Open hearth process
Description : The steel used for the manufacture of rails, is (A) Bessemer steel (B) Mild steel (C) Cast steel (D) Stainless steel
Description : Cast steel is manufactured by (A) Cementation process (B) Crucible process (C) Bessemer process (D) Open hearth process
Description : L.D. converter is used in the production of (A) Pig iron (B) Steel (C) Copper (D) Zinc
Last Answer : (B) Steel
Description : L.D. (Linz-Donawitz) converter is used in the production of (A) Copper (B) Steel (C) Zinc (D) Aluminium
Description : 10. The metals used in catalytic converter are a.Iron, Copper b. Platinum , Palladium ,and Rhodium c. Gold , Silver , Nichrome d. Mercury ,Lead, Iron
Last Answer : Ans- b. Platinum , Palladium ,and Rhodium
Description : Which of the following reaction does not occur in Bessemer’s converter ?
Last Answer : Which of the following reaction does not occur in Bessemer's converter ? A. `2Cu_(2)S+5O_(2) rarr 2CuSO_(4 ... +SO_(2)` D. `FeO+SiO_(2) rarrFeSiO_(3)`
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`
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).
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)`
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
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)`
Description : In extraction of metal how many of the following ores calcination process is involved . (i) Dolomite (ii) Malachite (iii) Calcite (iv) Copper pyrities
Last Answer : In extraction of metal how many of the following ores calcination process is involved . (i) Dolomite ... Siderite (viii) Iron pyrite (ix) Ar gentite
Description : Statement-1: Silica is added as a flux in reverberatory furnance, in the extraction of copper from copper pyrites. Statement-2: Silica decreases the m
Last Answer : Statement-1: Silica is added as a flux in reverberatory furnance, in the extraction of copper from ... Statement-1 is false but Statement -2 is true
Last Answer : The chemical composition of slag formed during the smelting process in the extraction of copper is :- A. `Cu_(2)O+ ... . `CuFeS_(2)` D. `Cu_(2)S++FeO`
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
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
Description : In the extraction of copper the smelt formed in the blast furnace contians
Last Answer : In the extraction of copper the smelt formed in the blast furnace contians A. `CuS+"little"FeS` B. `Cu_(2) ... )O+"little"FeS` D. `Cu_(2)O+"little"FeO
Description : In the extraction of copper, the slag formed in the blast furnace is
Last Answer : In the extraction of copper, the slag formed in the blast furnace is A. `CaSiO_(3)` B. `FeSiO_(3)` C. `FeSiO_(3)` D. `MnSiO_(3)`
Description : Extraction of __________ employs an electrolytic process. (A) Aluminium (B) Silver (C) Copper (D) All (A), (B) and (C)
Last Answer : (A) Aluminium
Description : Matte smelting is used in the extraction of (A) Lead (B) Zinc (C) Aluminium (D) Copper
Last Answer : Option D
Description : Name the sequential steps involved in extraction of copper from its copper pyrite ore.
Last Answer : sequential steps involved in extraction of copper from its copper pyrite ore
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)`
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)`