Which of the following statements about composites is

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Which of the following statements about composites is NOT correct?
Which of the following disadvantages DO NOT apply to composites?
Which of the following statements is NOT true?
Which polymer is widely used as insulation and in packaging industry due to its good foaming properties.
Which ONE statement is true for polymer spherulites These are granular structures containing both crystalline and amorphous regions. Which of the following polymers is most abundantly used?
Yield strength is defined as the stress at which the material: undergoes a permanent strain of 0.002
Biomaterial components cannot be from metals, polymers or ceramics
Defects in crystalline structure is always undesirable
In a unit crystal, 110 represents a point within it In a unit crystal, [110] represents
In a unit crystal, (110) represents a plane in it Metals have complicated crystal structures in general.
Properties of Iron can be changed over a very wide range by imparting proper heat treatment
Some metals become brittle at lower temperatures
The larger the difference in electro negativity between two atoms, the greater is the tendency to form ionic bonds
The smaller the area under stress strain curve, the tougher is the material
1.What is the concentration of Lead (Pb) in the beta phase at point B?
2.What is the concentration of COPPER in the solid phase at point B?
3.What is the Maximum Solubility of Pb in solid Mg at any T?
4.Name the structure A
5.Name the structure B
6.Name the structure C
7.Name the structure D
8.What kind of micro structure will be formed when the temperature changes in eutectoid steel occur as per process ‘a’?100% B9.What is the name of the structure shown as the continuous light material in the micro-structure of a steel shown below
10.Identify Peritectic point
13.Which of the three processes shown will result in the formation of 100% Pearlite
14.Which of the three processes shown will result in the formation of 50% Bainite, 25% martensite, and 25% austenite
15.Specify the nature of the final microstructure of Orange line.
16.What is the concentration of Lead (Pb) in the alpha phase at 2500C when the composition is 60% Mg & 40% Pb?
17.A 99.77 wt% Fe – 0.23 wt% C alloy is at a temperature of 7230C. What is the weight fraction of cementite Phase? (Remember that Eutectoid temperature is 727˚C, the ferrite concentration is 0.022 wt% C, eutectoidconcentration is 0.76 wt% C and cementite concentration is 6.7 wt% C.)
18. A 99.77 wt% Fe – 0.23 wt% C alloy is at a temperature of 7230C. What is the fraction of pro-eutectoid ferrite phase? (Remember that Eutectoid temperature is 727˚C, the ferrite concentration is 0.022 wt% C, eutectoid concentration is 0.76 wt% C and cementite concentration is 6.7 wt% C.)
18.What is the weight fraction of the solid phase (Wα) present at point B in terms of the tie line segments R & S?
19.This microstructure formation in the circled region is the result ofEutectic reaction

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