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Question

Alginic acid is produced by

A
Red alga
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B
Green alga
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C
Blue green alga
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D
Brown alga
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Solution

The correct option is C Brown alga
  • Alginic acid, also called as algin or alginate, is an anionic polysaccharide distributed widely in the cell walls of brown algae, where through binding with water it forms a viscous gum.
  • In extracted form, it absorbs water quickly; it is capable of absorbing 200-300 times its own weight in water.
  • It is sold in filamentous, granular or powdered forms.
  • Hence the correct option is D.

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