30- Ice, liquid water and water steam have the same composition of H 2 O. Thus,
ID: 2250335 • Letter: 3
Question
30- Ice, liquid water and water steam have the same composition of H2O. Thus, H2O is isomorphic. True___ or False___?
31- To quench carbon steel, induction heating results in better hardenability than furnace heating does. True___ or False___?
32- the total economic loss due to corrosion is about (___%) of GNP. (Fill in the blank with number).
33- In view of structure, the difference between glass and quartz is that _______________________________________________.
34- In polymer processing, benzoyl peroxide is typically used for condensation polymerization. True___ or False___?
35- For building investment casting mold, wax is used as binder. True___ or False___?
30- Ice, liquid water and water steam have the same composition of H2O. Thus, H2O is isomorphic. True or False? 31-To quench carbon steel, induction heating results in better hardenability than furnace heating does. True_-or False-? 32 the total economic loss due to corrosion is about ( %) of GNP. (Fill in the blank with number). 33- In view of structure, the difference between glass and quartz is that 34- In polymer processing, benzoyl peroxide is typically used for condensation polymerization. True or False? 35-For building investment casting mold, wax is used as binder. True-or False ?Explanation / Answer
30. TRUE; Because ratio of hydrogen to oxygen is 2:1 in all state and its morphology is also same in all its states.
31. TRUE ; Because of high rate of cooling in induction hardening with respect to furnace heating.
32. the total economic loss due to corrosion is about (2.9 %) of GNP.
33. The main difference between the silica and quartz is that Fused Silica is composed of a non-crystalline silica glass, while Quartz is made from crystalline silica.
34. TRUE
35. FALSE; slurry containing a mixture of liquid refractory binders such as colloidal silica or ethyl silicate, plus a refractory powder such as quartz, fused silica, zircon, alumina or aluminosilicate are used.
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