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Engineering MaterialsChoose the correct option: Which factor most strongly governs whether a substitutional solid solution forms between metals A and B? (i) Large electronegativity difference between A and B (ii) Similar atomic radii and crystal structures with high mutual solubility (iii) Presence of small interstitial atoms like C or N (iv) High melting point of the solvent metal alone20252mEngineering MaterialsChoose the correct option: Which of the following is the hardest? (i) Austenite (ii) Bainite (iii) Pearlite (iv) Martensite20242mEngineering MaterialsChoose the correct option: Which crystal structure has the highest packing factor and 12 slip systems, making metals with this structure highly ductile? (i) Body-centered cubic (BCC) (ii) Face-centered cubic (FCC) (iii) Hexagonal close-packed (HCP) (iv) Simple cubic20252mEngineering MaterialsChoose the correct option: Grey and spheroidal cast irons mainly differ in that the graphite phase is present as: (i) Flakes in grey iron and spheroidal nodules in spheroidal iron (ii) Cementite in grey iron and flakes in spheroidal iron (iii) Spheroidal nodules in grey iron and flakes in spheroidal iron (iv) Cementite in both alloys20252m
PreviousChoose the correct option: Carbon and Nitrogen are introduced into the surface of steel during (i) Normalizing (ii) Cyaniding (iii) Hardening (iv) TemperingNextChoose the correct option: On a two-component solid-liquid phase diagram, a tie line indicates the region where (i) temperature is constant (ii) only the solid phase exists (iii) composition is constant (iv) only the liquid phase exists
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