Q141
Open questionWhich of the following metals reacts violently with water ?
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Q142
Open questionThe process of removal of scale formed during hot rolling of steel is termed as
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Q143
Open questionSilicon crystal can be converted to p-type semi-conductor by doping with
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Q144
Open questionDuring sensible heating of humid air
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Q145
Open questionAt the point of boundary layer separation in fluid flow, the
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Q146
Open questionThe most suitable material of construction for a sewer to carry sewage under high pressure is
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Q147
Open questionStretcher strains found in a low carbon sheet are associated with the
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Q148
Open questionFor hardening high alloy steel, it is to be heated slowly and uniformly to avoid
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Q149
Open questionTo improve the machinability of steel by its softening, it is subjected to
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Q150
Open questionA compact estimate about the amount of materials handling between various work stations is obtained from the
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Q151
Open questionFactor of safety is the ratio of the __________ stress to the working stress.
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Q152
Open questionElectrolytic reduction cell used for conversion of calcined Al2O3 to Al is a carbon lined furnace operating at 800 - 900°C. The purpose of electric current supplied to the furnace is to
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Q153
Open questionIn radiative heat transfer, a grey surface is the one, which has
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Q154
Open questionThe ratio of thermal & electrical conductivity is same for all the metals at the same temperature; and at around room temperature, this ratio is proportional to (where, T = absolute temperature, °K)
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Q155
Open questionEutectoid reaction for iron-carbon system occurs at a temperature of __________ °C.
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Q156
Open questionEutectic reaction for iron-carbon system occurs at a temperature of __________ °C.
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Q157
Open questionHigh speed steel tools retain their hardness upto a temperature of __________ °C.
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Q158
Open questionSuper conduction in metals is observed at a temperature of __________ °K.
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Q159
Open questionRain drops falling through atmospheric air attain limited terminal velocity, because of
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Q160
Open questionThe most important consideration, while designing the refrigeration system of an aircraft is that the refrigeration system
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