Corrosion resistance of steel is increased by addition of
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Depth of hardness of steel is increased by addition of
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By severely deforming a metal in a particular direction it becomes
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Iron-carbon alloys containing carbon ________ 4.3% are known as hyper-eutectic cast irons.
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Which of the following statements are true for annealing of steels?
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Which is false statement about annealing?
Annealing is done to
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Eutectoid reaction occurs at
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When 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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Pick up the wrong statement
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Which of the following metal shrinks most from molten state to solid state?
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Thermoplastic materials are those materials which
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Admiralty brass used for steam condenser tubes contains copper and zinc in the following ratio
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Alnico, an alloy used extensively for permanent magnets contains iron, nickel, aluminium and cobalt in the following ratio
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Heavy duty leaf and coil springs contain carbon of the following order
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Cold rolled steel sheets contain carbon of the following order
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In full annealing, the hypo eutectoid steel is heated from 30°C to 50°C above the upper critical temperature and then cooled
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Steel containing ferrite and pearlite is
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Ductile cast iron
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Which of the following steel making process is being adopted at Rourkela (in India) Steel Plant?
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Quenching is not necessary when hardening is done by
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