Q. Super conductors are those substances, which

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Q. Cermets are used for making

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Q. The formation of oxide film on a metal due to atmospheric exposure reduces its

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Q. A hardened steel essentially contains

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Q. Which one contains the least percentage of carbon ?

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Q. Thermal shield used in high powered nuclear reactor to protect the walls of the reactor from radiation damage is made of

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Q. All materials obey Hooke's law within elastic limit. When elastic limit is reached, the tensile strain

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Q. Silico-manganese steels (containing 0.7% Mn, 0.5% C and 2% Si)

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Q. Which of the following is not a copper based alloy with nickel ?

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Q. Which of the following alloys does not contain nickel ?

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Q. An elastic behaviour of materials is expressed in terms of

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Q. Pure nickel is

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Q. In drop forging process, the forging is done by dropping the __________ at high velocity.

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Q. Which of the following is not an alloy of copper and tin ?

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Q. Lead

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Q. Cast iron has

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Q. Locomotive boiler tubes are made of __________ alloys.

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Q. Slow and progressive deformation of a material with time under constant stress is called

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Q. Which of the following mechanical properties of a material is most structure insensitive ?

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Q. Mercury is transported in metal containers made of

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