Q. Consumable electrodes are used in the __________ welding.

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Q. Magnesium is present in

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Q. The passage between the nozzle and the __________ is called 'sprue' in case of injection moulding.

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Q. Chalcopyrite is an ore of

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Q. The following is employed as sacrificial anode to provide cathodic protection to ships, pipelines and storage tanks.

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Q. Heat transfer by __________ is almost absent in case of fluidised bed drying operation.

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Q. Increasing the carbon content of steel

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Q. Pick out the wrong statement.

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Q. More than 95% of __________ is present in corrundum.

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Q. Blow off cock is provided in steam boiler to

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Q. Work hardening of a material

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Q. Blasting of tri-nitro-toluene (TNT) is done by mixing it with ammonium

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Q. Tin plated iron and galvanised iron are generally produced by

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Q. In a drilling process, the metal is removed by both shearing & extrusion. General purpose drills are made of

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Q. Dezincification is a form of corrosion espe-cially applicable to

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Q. Which of the following materials is not suitable as a die material for wire drawing?

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Q. By X-ray diffraction, it is not possible to determine the

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Q. In continuous casting process, graphite moulds are used with a view to providing

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Q. Energy required to compress a hot gas as compared to cold gas will be

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Q. In the commercial production of which of the following metals, matallothermic reduction is used ?

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