Q. Addition of __________ to the steel helps in increasing the residual magnetism in steel used for making magnets.

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Q. Constantan is an alloy of

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Q. Austenitic manganese steel used for making jaws of crushing machines contains about __________ percent manganese.

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Q. White cast iron is not

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Q. Galvanised iron is

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Q. German silver used for decorative purposes contains maximum percentage of

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Q. The metals occuring at the lower most position in the electromotive series

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Q. The main purpose of galvanising iron sheets is to

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Q. The impure iron (pig iron) that is tapped out from blast furnace contains about __________ percent carbon.

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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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