Q. Invar used in thermocouples is an alloy of nickel and

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Q. Nickel (56%) and molybdenum (17%) alloys are called

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Q. Lead pipes are not safe for carrying 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. German silver in an alloy of

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Q. A suitable material of construction to use with fuming sulphuric acid is

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Q. Which of the following crystal structures characterises the austenitic stainless steel?

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Q. Caustic soda is produced in a mercury cell having anode and cathode made respectively of moving mercury and

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Q. 18/8 steel is a/an __________ stainless steel.

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Q. Cast iron has very high

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Q. Liquid ammonia is shipped in __________ containers.

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Q. Cermets are __________ materials.

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Q. Cast irons are generally specified by their

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Q. Ceramic recuperators are generally made of

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Q. Hammers and railway rails are normally made of

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Q. Softness of silver can be converted into hardness by alloying it with small quantity of

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Q. The addition of antimony in tin-based alloys improves its

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Q. The melleability of a material is the property by virtue of which it can be rolled or hammered into thin sheets. Which of the following materials has the miximum malleability ?

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Q. Dielectric strength of a material is

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Q. Which of the following stainless steels is non-magnetic ?

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Q. 18-4-1 high speed steel contains 18%, 4% and 1% respectively of

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