Q. Chromium when added to steel __________ the tensile strength.

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Q. Which of the following is added in low carbon steels to prevent them from becoming porous?

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Q. A steel with carbon __________ is known as hypo-eutectoid steel.

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Q. Free cutting steels

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Q. The presence of hydrogen in steel causes

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Q. Y-alloy contains

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Q. The steel scrap added in the charge of cupola controls the grade of cast iron produced.

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Q. The main alloying elements high speed steel in order of increasing proportion are

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Q. Which of the following metal is used in making electrical resistance wire for electric furnaces and heating elements?

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Q. Which of the following metal is used for nuclear energy?

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Q. Tin base white metals are used where the bearings are subjected to

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Q. The charge of the blast furnace consists of

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Q. The ability of a material to resist fracture due to high impact loads, is called

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Q. The purpose of heat treatment is to

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Q. An alloy of copper, tin and zinc is known as

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Q. Which of the following iron exist between 910° C and 1403° C?

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Q. The material in which the atoms are arranged chaotically, is called

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Q. In basic bessemer process, the furnace is lined with

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Q. Polyvinylchloride (PVC) is a __________ material.

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Q. In a unit cell of close packed hexagonal space lattice, there are twenty four atoms.

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