Materials and Construction The metals occuring at the lower most position in the electromotive series Are heat insulators Do not resist corrosion Are very brittle Resist corrosion very strongly Are heat insulators Do not resist corrosion Are very brittle Resist corrosion very strongly ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Presence of high amount of silicon in cast iron Increases the contraction of the metal Reduces its fluidity Suppresses the decomposition of Fe₃ C Increases the formation of graphite Increases the contraction of the metal Reduces its fluidity Suppresses the decomposition of Fe₃ C Increases the formation of graphite ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Zinc is not used For producing zinc base die casting alloys As anode for corrosion prevention in boiler As an alloying element in various bronzes In its oxide form as pigments For producing zinc base die casting alloys As anode for corrosion prevention in boiler As an alloying element in various bronzes In its oxide form as pigments ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction The melleability of a material is the property by virtue of which it can be rolled or hammered into thin sheets. Which of the following materials has the miximum malleability? Aluminium Wrought iron Copper Lead Aluminium Wrought iron Copper Lead ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Plasticisers are added to polymers to improve their Tensile strength Softness & flexibility Acid resistance Alkali resistance Tensile strength Softness & flexibility Acid resistance Alkali resistance ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Which of the following is not an alloy of nickel and chromium? Hastealloy Nimonic alloys Inconel Duralumin Hastealloy Nimonic alloys Inconel Duralumin ANSWER DOWNLOAD EXAMIANS APP
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