Q. __________ addition increases the depth of hardness of steel.

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Q. Fluorine is not a constituent of

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Q. The most commonly used combustion system manufactured in India for the thermal power plant boilers is the __________ combustion system.

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Q. During solid state sintering of powders, the following mechanism can be active.

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Q. The transition temperature at which all the ferromagnetic materials become paramagnetic materials is termed as the 'Curie temperature'. Its value for cobalt is __________ °C.

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Q. Regeneration of molecular seive requires it to be heated to a temperature of about __________ °C.

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Q. Steels with high carbon equivalent have poor weldability, because in these steels during welding

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Q. If the pH value of a solution of sodium chloride is 7; then what will be the pH value of the solution after its electrolysis ?

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Q. Measurement of the area of the indented surface is not involved in the __________ hardhes testing method.

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Q. Salvage value is the most flexible criteria for analysing a financial investment. 'Salvaging' means

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Q. Super conduction in metals is observed at a temperature of __________ °K.

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Q. On-off control

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Q. The tensile load-elongation curve of a metal does not describe

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Q. Usual value of the resistance suitable for a wire resistance strain gauge is __________ ohms.

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Q. Permanent set in a material is produced by subjecting it to

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Q. The following is a typical anionic collector used in flotation.

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Q. Which of the following test is used for distinguishing among dry oils, semi-drying oils and non drying oils ?

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Q. The wet bulb temperature is lower in dry air than in wet air at the same temperature. A dry bulb thermometer registers a higher temperature than a wet bulb thermometer except at __________ percent relative humidity.

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Q. The process of removal of scale formed during hot rolling of steel is termed as

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Q. A psychrometer does not measure the __________ temperature of moist air.

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