Wood categorized under material type: Metals and Alloys. Polymers. Ceramics and

Question

Wood categorized under material type: Metals and Alloys. Polymers. Ceramics and Glasses. Composites. Which of the following materials are inorganic materials mainly consist of oxides, nitrides and carbides: Metals and Alloys. Polymers. Ceramics. Metals and ceramics The ability of a material to withstand stress without breaking: Tensile strength Hardness Toughness Ductility Steel has a carbon content of: 0.3 ~ 1.4% 0.1 ~ 0.3% 2.14 ~ 4% 3 ~ 4.5 % Which of the following dements is not required for synthesis polymer. Monomer Initiator Matrix Reactor

Explanation / Answer

1. d) Composite

Wood is a composite material made from lignin and cellulose. wood use lognin matrix and cellulose fiber to form polymer composite.

2. c) Ceramics

Inorganic materials are which, not derived from living organisms

3. c) Toughness

Toughness is the ability of material to withstand high stress along with great unit deformation without fracture.

4. a) 0.3-1.4

5. c) Matrix

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