Questions 1. Which of the below descriptors can be used to describe for certain

Question

Questions 1. Which of the below descriptors can be used to describe for certain types of co- polymers a. Random b. Grafted c. Block d. All of the above terms can describe acertain type of co-polymers 2. The graph on the right shows two typical stress-strain curve The red-highlighted areas marked in these curves represent what material property? a. Strength b. Stiffness c. Toughness d. Strain 3. Pure ice in water is what type of system? a. 1-component 1-phase b. 1-component 2-phase c. 2-component 2-phase d. 2-component 1-phase 4. What is NOT considered a state variable? a. Pressure b. Temperature c. Composition d. None of the above 5. In the A-Cu phase diagram shown on the right, which point labels the eutectic invariant point? a. Point A b. Point B c. Point C d. A B, and C show eutectic points e. None of these points is a eutectic point.

Explanation / Answer

1) Option d) , on the basis of arrangement they are classified

2) Toughness , Option c)

3) One component - 2 phase system, option b)

4) option d) , none

5) Option b) , Point B is the eutectic composition

6) Elastic modulus = stress / strain , material B has more strain than A so B has smaller elastic modulus, option b)

7) Degree of freedom = C - P +2 = 2 - 2 + 2 = 2 , option b)

8) option a) 0.29

10) liquidus, option b)

11) False , they do not have same composition

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