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Ethanol is manufactured on a large scale by the fermentation of which sugarcane by-product?
ABagasse
BMolasses
CQuicklime
DSodium silicate
Answer & Solution
Correct answer: B. Molasses
1. Industrial ethanol is made by fermenting a sugar-rich by-product of sugar manufacture.
2. That by-product, a dark syrupy liquid left after sugar crystallisation, is molasses.
3. Quicklime and sodium silicate are not fermentation feedstocks.
4. Hence the answer is molasses.
_Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit 11 "Carbon and its Compounds", p.170_
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