Steel Making In Metallurgy — Part 2 MCQs with Explanations

high slag basicity and high silicon content in the hot metal is the correct answer to “Manganese recovery in steel making is aided by”. This question is standard in competitive examination syllabi for Steel Making In Metallurgy.

18-4-1 is the correct answer to “Most popular grades among all high-speed steels is designated as”. This question is standard in competitive examination syllabi for Steel Making In Metallurgy.

Blistering is the correct answer to “Which of the following is the consequence of hydrogen embrittlement”. This question is standard in competitive examination syllabi for Steel Making In Metallurgy.

S < 0.05% and P < 0.05% is the correct answer to “In the acid Bessemer process, the hot metal should have the following composition:”. This question is standard in competitive examination syllabi for Steel Making In Metallurgy.

Mn, Si, Al is the correct answer to “During deoxidation of steel, the sequence of addition of elements should be as follows:”. This question is standard in competitive examination syllabi for Steel Making In Metallurgy.

Both A and B is the correct answer to “Heat resistance steels possess”. This question is standard in competitive examination syllabi for Steel Making In Metallurgy.

magnetic is the correct answer to “Ferritic stainless steels are”. This question is standard in competitive examination syllabi for Steel Making In Metallurgy.

P-3, Q-4, R-1, S-2 is the correct answer to “Match the practices in Group 1 with the reactors in Group 2 . Group 1 Group 2 P. Layered charging of coke and ore 1. Ladle furnace Q. Oxygen injection through supersonic nozzle 2. Electric are furnace R. Aluminium wire feeding 3. Blast furnace S. Foamy slag practice 4. L.D. converter”. This question is standard in competitive examination syllabi for Steel Making In Metallurgy.

Chromium base, tungsten base & molybdenum base tool steels is the correct answer to “Hot work tool steels can be classified by”. This question is standard in competitive examination syllabi for Steel Making In Metallurgy.

all of these is the correct answer to “Carbon in steel”. This question is standard in competitive examination syllabi for Steel Making In Metallurgy.

More than 0.2% is the correct answer to “Post weld heat treatment of martensitic stainless steel weld joint is mandatory if it has carbon content”. This question is standard in competitive examination syllabi for Steel Making In Metallurgy.

decrease the extent of growth of columnar grains is the correct answer to “Electromagnetic stirring of the liquid steel in continuous casting is primarily used to”. This question is standard in competitive examination syllabi for Steel Making In Metallurgy.

high alloy steels is the correct answer to “Stainless steels are”. This question is standard in competitive examination syllabi for Steel Making In Metallurgy.

low temperature, low viscosity, and low FeO content of slag is the correct answer to “Necessary conditions for removal of phosphorous from liquid steel are”. This question is standard in competitive examination syllabi for Steel Making In Metallurgy.

reduce carbon and hydrogen in steel is the correct answer to “The main function of the RH process of steel treatment is to”. This question is standard in competitive examination syllabi for Steel Making In Metallurgy.

Valve steels is the correct answer to “Chromium-silicon Heat resisting steels are also known as”. This question is standard in competitive examination syllabi for Steel Making In Metallurgy.

Chromium-manganese-molybdenum steels is the correct answer to “Air hardening steels are basically”. This question is standard in competitive examination syllabi for Steel Making In Metallurgy.

phosphorous is the correct answer to “Cold shortness happens in the steel due to presence of”. This question is standard in competitive examination syllabi for Steel Making In Metallurgy.

sheet is the correct answer to “Thin section having thickness lesser than 6mm & width greater than 600mm is called”. This question is standard in competitive examination syllabi for Steel Making In Metallurgy.

modify Al2O3 inclusions into calcium aluminate inclusions is the correct answer to “The purpose of injection of calcium in to liquid steel is to”. This question is standard in competitive examination syllabi for Steel Making In Metallurgy.

Magnesite refractory is the correct answer to “Permanent lining in L.D. converters is . . . . . . . . bricks”. This question is standard in competitive examination syllabi for Steel Making In Metallurgy.

High silicon in hot metal is the correct answer to “Identify the condition that is not beneficial for dephosphorisation of hot metal in an L-Dconverter.”. This question is standard in competitive examination syllabi for Steel Making In Metallurgy.

oxidizing and basic is the correct answer to “In L-D steel making, the final slag can be best described as”. This question is standard in competitive examination syllabi for Steel Making In Metallurgy.

All of these is the correct answer to “Which type of condition is required to remove phosphorus during steel making process”. This question is standard in competitive examination syllabi for Steel Making In Metallurgy.

14 - 27 % is the correct answer to “Ferritic stainless steels are straight chromium steels containing . . . . . . . . percent chromium.”. This question is standard in competitive examination syllabi for Steel Making In Metallurgy.

Sulfur can be removed in preference to C and P is the correct answer to “In a basic oxygen furnace, under appropriate conditions, which of the following statements is not correct”. This question is standard in competitive examination syllabi for Steel Making In Metallurgy.

0.46 is the correct answer to “Molten steel is kept in a ladle. Due in natural convection. mixing occurs inside the melt. A 1cm diameter sphere is held in the centre of the melt where the steel flows upward. so as to measure the force exerted by the melt on the sphere. The force. F exerted by the melt on the sphere is given by $$F = f\left( {\frac{\pi }{8}} \right).\left( {\frac{{{\mu ^2}}}{8}} \right){\left( {\operatorname{Re} } \right)^2}.$$ Data: Density of liquid steels = 7100 kg. m -3 Viscosity of liquid steel = 6.5 × 10 -3 kg. m -1 . s -1 Reynolds number (Re) of the melt = 5 × 10 3 Friction factor (f) = 0.3 The velocity of melt (m.s -1 ) in the central portion of the ladle would be”. This question is standard in competitive examination syllabi for Steel Making In Metallurgy.

0.08% C steel is used for making Cans is the correct answer to “Pick out correct statement/statements”. This question is standard in competitive examination syllabi for Steel Making In Metallurgy.

Chromium-vanadium steels is the correct answer to “High quality springs are made from . . . . . . . .”. This question is standard in competitive examination syllabi for Steel Making In Metallurgy.

All are correct is the correct answer to “What are the applications of 436L ferritic stainless steel”. This question is standard in competitive examination syllabi for Steel Making In Metallurgy.

free board is the correct answer to “In a steel pouring ladle, the distance between the top of the ladle and the surface of the contents of the ladle is called”. This question is standard in competitive examination syllabi for Steel Making In Metallurgy.

Q, R is the correct answer to “The purpose of injection of calcium into liquid steel is to P. replace Al 2 O 3 inclusions by CaO inclusions Q. modify Al 2 O 3 inclusions into calcium aluminate inclusions R. reduce sulfur content of steel S. reduce nitrogen content of steel”. This question is standard in competitive examination syllabi for Steel Making In Metallurgy.

all of these is the correct answer to “What are the casting defects”. This question is standard in competitive examination syllabi for Steel Making In Metallurgy.

20 minutes is the correct answer to “How much time is required for refining steel in acid Bessemer process”. This question is standard in competitive examination syllabi for Steel Making In Metallurgy.

prevent the skin sticking to the mould is the correct answer to “In continuous casting of steel, the mould is subjected to vertical oscillations in order to”. This question is standard in competitive examination syllabi for Steel Making In Metallurgy.

free from FeO is the correct answer to “Reducing condition is carried out in electric arc furnace, with slag”. This question is standard in competitive examination syllabi for Steel Making In Metallurgy.

It is a strong austenite stabiliser is the correct answer to “Identify the correct statement about man-ganese in steels from the following:”. This question is standard in competitive examination syllabi for Steel Making In Metallurgy.

Improve corrosion resistance is the correct answer to “Purpose of alloying of steels are”. This question is standard in competitive examination syllabi for Steel Making In Metallurgy.

pco can be lowered to a much lower level in the VOD than in the AOD is the correct answer to “VOD process is preferred over AOD process for making extra low carbon stainless steel, because”. This question is standard in competitive examination syllabi for Steel Making In Metallurgy.

molybdenum is the correct answer to “Properties of alloy steels can be improved significantly by the addition of”. This question is standard in competitive examination syllabi for Steel Making In Metallurgy.