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
Last Answer : Answer: Option D
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
Last Answer : Answer: Option C
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 : 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 : Bessemer process is used for the manufacture of (A) Pig iron (B) Cast iron (C) Wrought iron D) Steel
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 : Forge pig may be converted to wrought iron by (A) Rolling (B) Pudding (C) Shingling (D) Refining
Description : __________ iron is produced, when molten pig iron is chilled suddenly. (A) White cast (B) Grey cast (C) Wrought (D) None of these
Last Answer : (A) White cast
Description : __________ iron is produced, when molten pig iron is allowed to cool gradually. (A) White cast (B) Grey cast (C) Wrought (D) None of these
Last Answer : (B) Grey cast
Description : The cast iron when heated to red heat with powdered red haematite in an oven for increasing its toughness, is converted to (A) Grey cast iron (B) White cast iron (C) Mottled cast iron (D) Toughed cast iron
Description : Explain the difference between grey iron and white iron. What is mottled iron ?
Last Answer : The carbon in cast iron could exist at room temperature as either iron carbide, or as graphite which is the more stable form. Irons containing carbon as graphite are soft, easily ... equal proportions of graphite and iron carbide have intermediate hardness and are called mottled irons.
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 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 : 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
Description : Out of the following __________ iron has the best capability to bear sudden & excessive shocks. (A) White (B) Cast (C) Wrought (D) Pig
Last Answer : (C) Wrought
Description : Wrought iron is manufactured from pig iron by (A) Refining (B) Pudding (C) Shingling (D) All the above
Description : Pick up the correct statement from the following: (A) Blisters in the finished wrought iron, are caused due to the reaction between oxide of iron and carbon (B) The edges of a finished wrought iron ... shortage (C) Pig iron (charcoal) is manufactured from magnetic ore (Fe3O4) (D) All the above
Description : Which one has the maximum tensile strength out of the following? (A) Nodular cast iron (B) Pig iron (C) White cast iron (D) Grey cast iron
Last Answer : (A) Nodular cast iron
Description : The steel used for the manufacture of rails, is (A) Bessemer steel (B) Mild steel (C) Cast steel (D) Stainless steel
Description : Softer variety of steel may be obtained by (A) Cementation process (B) Crucible process (C) Bessemer process (D) Open hearth
Description : Statement-1:Wrought iron is prpared by pudding process Statement-2:Pig iron is the purest form of iron
Last Answer : Statement-1:Wrought iron is prpared by pudding process Statement-2:Pig iron is the purest form of ... Statement-1 is false but Statement -2 is true
Description : Which is the purest commercial form of iron? (1) Pig iron (2) Steel (3) Stainless steel (4) Wrought iron
Last Answer : (4) Wrought iron Explanation: Wrought iron or malleable iron is the purest form of commercial iron as it contains the lowest percentage of carbon (0.12-0.25%) and impurities of S, P, Mn and Si in ... furnace lined with Fe203 which oxidizes C, Si, P, etc, most of which are then removed by rolling.
Description : The purest form of Iron is : (1) Cast iron (2) Steel (3) Pig iron (4) Wrought iron
Last Answer : (4) Wrought iron Explanation: Wrought iron is an iron alloy with a very low carbon content in Contrast to steel, and has fibrous inclusions, known as slag. This is what gives it a " ... qualifies because current standards for commercially pure iron require a carbon content of less than 0.008 wt%.
Description : Which is the purest form of iron? (1) Steel (2) Cast iron (3) Pig iron (4) Wrought iron
Last Answer : (4) Wrought iron Explanation: Iron is a chemical element with the symbol Fe and atomic number 26. It is a metal in the first transition series. It is the most common element (by mass) forming the ... the Earth's crust. Wrought iron is the purest form of iron. It contains less than 0.25% carbon.
Description : Which one contains the least percentage of carbon? (A) Wrought iron (B) High speed steel (C) Cast iron (D) Pig iron
Description : Carbon percentage is the same in cast iron and (A) Wrought iron (B) Pig iron (C) Mild steel (D) High silicon (14%) iron
Last Answer : (B) Pig iron
Description : Which one is remelted and poured into moulds to get cast iron? (A) Wrought iron (B) Pig iron (C) Low carbon steel (D) Mild steel
Description : Iron alloyed with carbon upto 2% is called (A) Pig iron (B) Wrought iron (C) High carbon steel (D) None of these
Last Answer : (D) None of these
Description : Which of the following will have the highest melting point? (A) Pig iron (B) Mild steel (C) Wrought iron (D) High carbon stee
Last Answer : (C) Wrought iron
Description : __________ iron is the purest form of iron. (A) Cast (B) Wrought (C) Pig (D) High silicon
Last Answer : (B) Wrought
Description : Cupola produces __________ iron. (A) Pig (B) Cast (C) Wrought (D) Carbon free
Last Answer : (B) Cast
Description : The product out from a cupola is called (A) Wrought iron (B) Pig iron (C) Cast iron (D) None of these
Last Answer : (C) Cast iron
Description : Which is the purest commercial form of iron ? (1) Pig iron (2) Steel (3) Stainless steel (4) Wrought iron
Last Answer : Wrought iron
Description : Which is the purest form of iron ? (1) Steel (2) Cast iron (3) Pig iron (4) Wrought iron
Description : Pick out the wrong statement. (A) Wrought iron contains about 0.02% carbon (B) Wrought iron cannot be easily forged and welded (C) The chilled cast iron does not contain graphite (D) Spheroidal grey cast iron contains graphite flakes
Last Answer : (B) Wrought iron cannot be easily forged and welded
Description : In the Kraft (sulphate) process for the paper manufacture, the digestor is made of (A) Cast iron (B) Stainless steel (C) Karbate carbon (D) Wrought iron
Last Answer : (B) Stainless steel
Description : 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
Last Answer : Option A
Description : 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
Last Answer : ANSWER: W -- LIMESTONE AND CARBON
Description : Which of the following has the least carbon percentage? (A) Low carbon steel (B) Mild steel (C) Wrought iron (D) White cast iron
Description : Pick up the correct statement from the following: (A) Copper pipes are highly resistant to acidic and alkaline water (B) Wrought iron pipes are lighter than cast iron pipes (C) Wrought iron pipes corrode quickly and are less durable (D) All the above
Last Answer : (D) All the above
Description : A ferrous metal is (A) Cast iron (B) Wrought iron (C) Steel (D) All the above
Description : Depending on the chemical composition and mechanical properties, iron may be classified as (A) Cast iron (B) Wrought iron (C) Steel (D) All the above
Description : Wrought iron contains carbon about (A) 1.5% to 5.5% (B) 0.5% to 1.75% (C) 0.1% to 0.25% (D) None to these
Description : Wrought iron contains carbon upto (A) 0.25 % (B) 1.0 % (C) 1.5 % (D) 2 %
Description : The steel used in R.C.C. work is (A) Stainless steel (B) Mild steel (C) High carbon steel (D) Wrought iron
Description : Wrought iron is used for (A) Structural works in beams (B) Small sized water pipes (C) Columns and struts (D) None to these
Description : Which of the following is the purest form of iron? (A) Cast iron (B) Wrought iron (C) Mild steel (D) High carbon steel
Description : The steel which contains fissures and cavities, is manufactured by (A) Cementation process (B) Crucible process (C) Bessemer process (D) Open hearth process