Q. The charge is fed into the blast furnace through the

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Q. A small percentage of boron is added to steel in order to

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Q. Which of the following process of steel making is in operation at Tata Iron and Steel Works, Jamshedpur?

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Q. The unit cells

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Q. Which of the following display properties similar to that of steel?

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Q. Hindalium is an alloy of aluminium and magnesium with a small quantity of chromium.

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Q. When a low carbon steel is heated upto upper critical temperature

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Q. Combined carbon in iron makes the metal

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Q. The property of a material essential for spring materials is

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Q. A steel with carbon above 0.8% is known as hyper-eutectoid steel.

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Q. Which of the following material has nearly zero coefficient of expansion?

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Q. In normalising process, the hypo-eutectiod steel is heated from 30° C to 50° C above the upper critical temperature and then cooled in still air.

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Q. The alloying element which can replace tungsten in high speed steels is

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Q. The brown smoke during the operation of a bessemer Converter indicates that the

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Q. Martensite has needle like structure and is magnetic.

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Q. Monel metal is an alloy of

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Q. In induction hardening, the depth of hardening is controlled by controlling the voltage.

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Q. The austenite is a solid solution of carbon or iron carbide in gamma-iron.

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Q. The aluminium alloy, mainly used, for anodized utensil manufacture, is

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Q. The toughness of a material __________ when it is heated.

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