Q. Which of the following is the most prone to atmospheric corrosion ?

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Q. As the impurities are oxidised, the melting point of iron

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Q. In a plate type heat exchanger, heat transfer plates are never made of

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Q. Tin base and lead base alloys are used for bearing materials. Tin compared to lead has lower

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Q. Metal at the top of the electromotive series is

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Q. Fatigue failure of a material may occur, when it is subjected to __________ stress.

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Q. Presence of even very minute amount (say 0.1%) of __________ in copper, reduces its electrical conductivity very seriously.

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Q. High speed steel should have high

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Q. __________ of a material results, when its strength is increased & ductility is decreased by heating at a relatively lower temperature after cold working.

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Q. Which of the following metals in not used for coating of the base metal to guard it against corrosion ?

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Q. Brass container is suitable for storing

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Q. Aqueous nitric acid is stored in __________ vessel.

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Q. A metallic alloy in which one of the constituent metal is __________ , is called an amalgam.

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Q. The material of construction of bearings is

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Q. Hastelloy comprises of

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Q. Metalloid is

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Q. Stainless steel contains

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Q. Lead pipes are not safe for carraying drinking water, because water, containing dissolved oxygen attacks lead thereby forming poisonous Pb(OH)₂. Lead pipes are readily corroded by

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Q. An alloy of iron containing 4% carbon is called

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Q. Steel pipes are normally manufactured by __________ process.

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