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f) The polymers that soften with heating are called (thermoplastics / thermosets), and are usually (brittle / ductile) at room temperature, they also have (more
f) The polymers that soften with heating are called (thermoplastics / thermosets), and are usually (brittle / ductile) at room temperature, they also have (more / less) cross-linking compared to the other type. g) Annealing for undrawn polymer (increase /decrease) elastic modulus, (increase /decrease) ductility because of (higher / lower) degree of crystallinity after annealing. h) In the EMF series, the more negative the metal electrode potential, the more (anodic / cathodic) it is, and therefore the (higher / lower) corrosion resistance it has. i) The element that is responsible for the stainless behavior of stainless steel is (chromium / iron / carbon / copper) and the steel has to have at least ( 3%/11%) of it to be stainless. j) Welding stainless steel is a complicated process because (uniform / intergranular / erosion) corrosion may happen, to avoid this issue post-weld-heat treatment is conducted to (precipitate / dissolve) carbide particles. k) The higher the temperature, the (higher/lower) the corrosion rate. 1) Cathodic protection can be achieved by attaching a more (anodic / cathodic) material to the one to be protected. m) Metals conductivity (decrease / increase) with increasing the dislocation density. n) Semiconductors conductivity (decrease / increase) with increasing the temperature, and (decrease / increase) with increasing dopants level. o) For p-type semiconductor number of electrons is (equal to / more than / less than) number of holes. p) Heterogeneous nucleation requires (larger / smaller) supercooling than homogeneous nucleation. q) The iron-carbon alloy that has carbon more than 2.1wt%C is called (cast iron / stainless steel / structural steel)
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