Q. Eutectic reaction for iron-carbon system occurs at a temperature of __________ °C.

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Q. Which of the following is an example of stress corrosion ?

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Q. FeO (s) + CO (g) = Fe (s) + CO₂ (g), k = 0. 435 at 1173E; At equilibrium, what will be the number of moles of CO gas required to reduce one mole of FeO at 1173 K?

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Q. Fibre reinforced plastic (FRP) are

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Q. Addition of silicon to cast iron

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Q. Lead is poured into the joint between two __________ pipes.

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Q. About __________ ton of coke is required in a cupola to produce one ton of casting.

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Q. There are one octahedral void and __________ tetrahedral void in the closest packing of atoms.

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Q. Which of the following is prone to cup and cone fracture ?

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Q. The dew point of moist air becomes __________ with decrease in its relative humidity.

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Q. Heating of ferromagnetic materials to a temperature above Curie temperature makes it

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Q. Lap joints are preferred over butt joints in soldering/brazing, because these joints are

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Q. Colour comparator is used to measure the

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Q. Pick out the wrong statement.

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Q. The refractory lining of the bottom in a basic electric arc furnace is made of

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Q. Alcohols are not suitable as diesel engine fuel because the cetane number of alcohols is

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Q. Matte smelting is used in the extraction of

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Q. Percentage of differential pressure lost in a venturimeter with a tapering of 15° may be about

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Q. Compressed dry air is used as the cutting fluid, while machining

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Q. Which of the following materials has the least scrap value ?

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