Carbon is present in the combined form (carbide) in case of (A) Pig iron (B) Steel (C) Ferroalloys (D) All (A), (B) & (C)

Carbon is present in the combined form (carbide) in case of
(A) Pig iron
(B) Steel
(C) Ferroalloys
(D) All (A), (B) & (C)
by

1 Answer

Answer :

(D) All (A), (B) & (C)
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Which of the following materials are used in the manufacture of pig iron from iron ore? w) Limestone and carbon x) Calcium oxide and oxygen y) Chromium and nickel z) Oxygen and sulfur dioxide

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Which one of the following elements is present as a major impurity in pig iron ?

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Which of the following is the most wear resistant grade of carbide used for the cutting tools? (A) Aluminium carbide (B) Tungsten carbide (C) Nickel carbide (D) Iron carbide

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For the irreversible reaction, Ca+ 2C = Ca C2, Δ H°298 = - 60000 J . mole-1. If a system initially containing 2 moles of calcium, 3 moles of carbon and 1 mole of calcium carbide is allowed to react to completion, the heat evolved at 298 K will be (A) 30,000 J (B) 60,000 J (C) 90,000 J (D) 2,40,000 J

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Primary designation of steel is based on its (A) Hardness & tensile strength (B) Carbon content (C) Iron content (D) Alloying elements content

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Which is the purest form of iron? (A) Wrought iron (B) Pig iron (C) Bessemer iron (D) Grey iron

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Last Answer : (B) Wrought

Limestone is added in the blast furnace (during pig iron manufacture) to (A) Form slag by combining with impurities (B) Supply heat by undergoing exothermic reaction with impurities (C) Reduce the coke consumption (D) Reduce slag viscosity

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Last Answer : Option A

Which of the following theories of origin of petroleum does not explain the presence of nitrogen & sulphur compounds in crude oil? (A) Modern theory (B) Carbide theory (C) Engler theory (D) All (A), (B) and (C

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Carbide tipped cutting tools are manufactured by powder metallurgy techniques and have a composition of (A) 90% tungsten carbide and 10% cobalt (B) 70% aluminium oxide & 30% silica (C) 30% nickel, 15% chromium & 55% tungsten (D) 65% tungsten & 35% zirconium

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Last Answer : Option A