Q. Quenching is not necessary when hardening is done by

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Q. The iron ore in the charge of blast furnace acts as an iron bearing mineral.

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Q. Beryllium bronze has

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Q. An aluminium alloy with 11% silicon is used for making engine pistons by die casting technique.

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Q. Which of the following is an amorphous material?

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Q. The machinability of steel is improved by adding

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Q. The carbon in the pig iron varies from

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Q. The type of space lattice found in alpha-iron is

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Q. The material widely used for making pendulums of clocks is

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Q. The stiffness is the ability of a material to resist

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Q. The blade of a power saw is made of

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Q. In induction hardening __________ is high.

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Q. The metal suitable for bearings subjected to light loads, is

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Q. In flame hardening, oxy-acetylene flame is used.

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Q. Which of the following statements are true for annealing of steels?

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Q. The ability of a material to undergo large permanent deformation with the application of a tensile force, is called ductility.

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Q. Which of the following steel making process is being adopted at Rourkela Steel Plant?

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Q. 18-4-1 high speed steel contains

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Q. The stiffness is the ability of a material to resist deformation under stress.

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Q. The acidic bessemer process is suitable for producing steel from pig iron containing large quantities of phosphorus.

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