Chemical Engineering :: Chemical Engineering Basics
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Pick out the wrong statement:
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The tensile strength of plastics ranges from __________ kg/mm2.
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Ceramic tips for the cutting tool are prepared from __________ powder.
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Grain hardness is measured by the __________ hardness testing method.
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The thermal efficiency of a heat engine giving an output of 4 KW with an input of 10000 Joules/sec is __________ percent.
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Which of the following alloying elements when added in steel does not improve its lachinability ?
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Largest application of laser welding is in __________ welding.
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Which of the following is a neutral flux used in the pyrometallurgy of metal extraction?
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The critical pressure at which the latent heat of vaporisation of steam becomes zero is __________ Kg/cm2 .
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Value of a material is usually considered as a relationship between
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A.
Soft water is more corrosive than that carrying calcium salts.
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B.
The corrosion of brass condenser tubes handling brine solution is also termed as 'dezincification'.
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C.
Non-annealed brass is highly susceptible to season cracking (i.e., inter-crystal corrosion due to internal stresses).
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D.
Pure copper is highly susceptible to stress corrosion.
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