Porcelain as insulating material - Material Science

Q.  Which of the following statements is true?
- Published on 05 Aug 15

a. Ceramic materials have low melting point
b. Porcelain is used as insulating material in spark plugs
c. Graphite is viscoelastic in nature
d. Compacting iron oxide powder ceramic tools are prepared

ANSWER: Porcelain is used as insulating material in spark plugs

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