Multiple choice

Which of the following fibres is made up of sodium silicate?

  1. Fiberglass

  2. Optical fibre

  3. Quartz

  4. Silica fibres
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Silica fibres made of sodium silicate (water glass) are used in heat protection (including asbestos substitution) and in packings and compensators. They can be made such that they are substantially free from non-alkali metal compounds.

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