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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Q. In process annealing, the hypo-eutectoid steel is

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Q. Delta-iron occurs between the temperature range of

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Q. According to Indian standard specifications, SG 400/15 means

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Q. White cast iron has

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Q. Iron-carbon alloys containing carbon __________ 4.3% are known as hyper-eutectic cast irons.

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Q. Which of the following metal shrinks most from molten state to solid state?

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Q. A steel containing ferrite and pearlite is

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Q. The defect which takes place due to imperfect packing of atoms during crystallisation is known as

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Q. The upper critical point varies according to the carbon content in steel.

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Q. A coarse grained steel

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Q. Cast iron is a ductile material.

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Q. Manganese is added in low carbon steel to

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Q. Beryllium bronze contains

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