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For retting of jute the fermenting microbe used is

1. Methophilic bacteria
2. Butyric acid bacteria
3. Helicobacter pylori
4. Streptococcus lactin

Correct answer: Butyric acid bacteria

Solution

Butyric acid bacteria are used in retting because they ferment and help decompose the pectic substances that bind jute fibers together. This loosens the fibers from the stem, making extraction easier.

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