Fast please I will upvote the answer .

Q1 a) Explain the different types of copolymers in polymeric chains. [5] 5 b) Suppose a pure Ge crystal has 5x10atoms/m. It is doped by 1 ppm concentration of Antimony atoms. Identify the new semiconductor obtained after doping and state its properties? Explain the current flow in the new semiconductor with a neat sketch. [10] c) Evaluate any two mechanical properties of metals and justify the importance of mechanical properties in the selection of engineering materials with a suitable example. Total 25 Marks [10]