Answer the questions — task. Science State Board, Class 8.

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எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

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1. Choose the option which exactly describes what is fermentation:

This process of releasing the nitrogen back into the atmosphere from the dead plants and animals by microorganisms
The process of converting sugar into alcohol with the help of a microorganism
The process of converting harmful substances into non-toxic substances with the help of a microorganism

2. Choose a food product that acts as a preservative

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