Q. The temperature in the upper part of the blast furnace (zone of reduction) is __________ that of the middle part.

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Q. The temperature point at which the change starts on heating the steel is called

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Q. Aluminium bronze has high resistance to corrosion.

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Q. Manganese bronze contains more copper than silicon bronze.

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Q. In a face centred cubic space lattice, there are

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Q. The fuel used in a blast furnace is

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Q. Face centred cubic space lattice is found in gamma-iron, aluminium, copper, lead, silver and nickel.

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Q. Which of the following is a point imperfection?

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Q. The process in which carbon and nitrogen both are absorbed by the metal surface to get it hardened is known as

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Q. The malleability is the property of a material by virtue of which a material

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Q. Which of the following statement is wrong?

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Q. Duplex process of steel making is a combination of

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Q. In corrosion resistant properties, bronzes are __________ to brasses.

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Q. Steel containing 0.8 to 1.5% carbon, is known as

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Q. Brittle materials when subjected to tensile loads, snap off without giving any sensible elongation.

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Q. The property of a material necessary for forgings, in stamping images on coins and in ornamental work, is

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

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Q. The phosphorus and sulphur in steel making can be removed by using basic bessemer process.

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Q. The heat treatment process used for castings is

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