Question Detail

Contact lenses are made from ?

  • Polyvinyl chloride
  • Teflon
  • Polystyrene
  • Lucite
Similar Questions :

1. Which is not a type of elements ?

  • Metals
  • Non Metals
  • Metalloids
  • Gases

2. Oxides of metals are alkaline.

  • TRUE
  • FALSE

3. What is extracted from Bauxite ?

  • Mica
  • Aluminium
  • Copper
  • Tin

4. The aqueous solution of which acids is called Vinegar ?

  • Acetic acid
  • Hydrochloric acid
  • Citric acid
  • Oxalic acid

5. Chemical used in photography is

  • sodium sulphate
  • sodium sulphite
  • sodium thiosulphate
  • sodium oxalate
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