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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Q. The portion of the blast furnace below its widest cross-section is called

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Q. Gamma-iron occurs between the temperature range of

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Q. Macro-structure of a material is, generally, examined by

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Q. Aluminium has low density and addition of silicon improves its fluidity and therefore, its castability.

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Q. Which of the following property is desirable for materials used in tools and machines?

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Q. Babbit metal is a

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

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Q. The compressive strength of cast iron is __________ that of its tensile strength.

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Q. When a steel containing less than 0.8% carbon is cooled slowly from temperatures above or within the critical range, it consists of

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Q. Eutectoid reaction occurs at

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Q. The addition of copper to aluminium possesses maximum strength after heat treatment and age-hardening

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