12. During what reaction upon heating, does one solid phase turn into another so
ID: 494178 • Letter: 1
Question
12. During what reaction upon heating, does one solid phase turn into another solid phase plus one liquid phase? a. Eutectic b. Eutectoid c. Peritectic d. Peritectoid 13. Which of the molecules shown on the right-hand side could DEFINITELY be HAN used to synthesize a thermoset polymer? a. Molecule A b. Molecule B c. Molecule C d. All three of them 14. What phase is formed from a diffusion-less reaction? a. Pearlite b. Martensite c. Lower Bainite d. Upper Bainite Liquid T' Liquid Y Liquid +x X +Y Y 20% 40% 60% 80% Y 15. Consider the binary phase diagram shown above for the two components X & Y. At temperature T' and composition 90% Y (labeled as point "A"), what proportion of the system is in the liquid phase? a. 0% b. 33% C. 66% 75% e. 100%Explanation / Answer
12. c)Peritectic
13. a) molecule A (diamine)
14. b)Martensite
15.
16.
17.a) isotactic
18.b) Total number of monomer units linked together in polymer chain
19.c) number average molecular weight
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