Need naswe of these Multiple Choice questions Q.A20 Complete the following sentence: The mechanical properties of polymers are...(A) brittle(B) ductile(C) highly elastic(D) diverseQ.A21 Which TWO statements are TRUE of the glass transition temperature?(A) Rubber-like materials are brittle below the glass transition temperature(B) Rubber-like materials are brittle above the glass transition temperature(C) As a glass is cooled, it reaches the glass transition temperature and crystallises(D) Above the glass transition temperature, glasses can be easily formed into avariety of shapesQ.A22 When defining a composite there are three conditions that should be met.1. Each component should have a reasonable presence2. The components should have different propertiesWhat is the third condition of a composite material?(A) The phases should be chemically similar on a microscopic scale and combinedwithout separation(B) The phases should be chemically distinct on a microscopic scale and separatedby a distinct interface(C) The phases should be structured in sandwiched layers with a third componentat their interfaceQ.A23 Which one of the following statements BEST describes the main role of the matrixmaterial in a fibre reinforced composite?(A) Carries most of the loading on the composite.(B) Improves the composite processibility(C) Allows the formation of complex composite shapes(D) Lowers the cost of the composite(E) Transfers stress between the reinforcement phase constituents

A polymer can be define as a natural or synthetic substances composed of very large molecules which…

Q.A20 Complete the following sentence: The mechanical properties of polymers are... (A) brittle (B) ductile (C) highly elastic (D) diverse Q.A21 Which TWO statements are TRUE of the glass transition temperature?

Q.A20 Complete the following sentence: The mechanical properties of polymers are... (A) brittle (B) ductile (C) highly elastic (D) diverse Q.A21 Which TWO statements are TRUE of the glass transition temperature?

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

Need naswe of these Multiple Choice questions

Q.A20 Complete the following sentence: The mechanical properties of polymers are...
(A) brittle
(B) ductile
(C) highly elastic
(D) diverse
Q.A21 Which TWO statements are TRUE of the glass transition temperature?
(A) Rubber-like materials are brittle below the glass transition temperature
(B) Rubber-like materials are brittle above the glass transition temperature
(C) As a glass is cooled, it reaches the glass transition temperature and crystallises
(D) Above the glass transition temperature, glasses can be easily formed into a
variety of shapes
Q.A22 When defining a composite there are three conditions that should be met.
1. Each component should have a reasonable presence
2. The components should have different properties
What is the third condition of a composite material?
(A) The phases should be chemically similar on a microscopic scale and combined
without separation
(B) The phases should be chemically distinct on a microscopic scale and separated
by a distinct interface
(C) The phases should be structured in sandwiched layers with a third component
at their interface
Q.A23 Which one of the following statements BEST describes the main role of the matrix
material in a fibre reinforced composite?
(A) Carries most of the loading on the composite.
(B) Improves the composite processibility
(C) Allows the formation of complex composite shapes
(D) Lowers the cost of the composite
(E) Transfers stress between the reinforcement phase constituents

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