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UPSC Prelims 2013 · World Geography · Countries, Rivers and Resources
With reference to the usefulness of the by-products of sugar industry, which of the following statements is/are correct? Select the correct answer using the codes given below.
- Bagasse can be used as biomass fuel for the generation of energy.
- Molasses can be used as one of the feedstock for the production of synthetic chemical fertilizers.
- Molasses can be used for the production of ethanol.
- (a) 1 only
- (b) 2 and 3 only
- (c) 1 and 3 only
- (d) 1, 2 and 3
Show the answer and explanation
Answer: (c) 1 and 3 only
Bagasse → power and molasses → ethanol are correct.
Statement by statement
1. ✓ CORRECT Bagasse is burnt in co-generation plants to make power.
2. ✗ WRONG Molasses is not a feedstock for synthetic chemical fertilisers.
3. ✓ CORRECT Molasses is fermented to produce ethanol (and alcohol).
Why the others are wrong
(a) Molasses → ethanol is also correct.
(b) Molasses does not make chemical fertilisers.
(d) Statement 2 is wrong.
The trap
Press mud (filter cake) is used as manure — but that is not a synthetic chemical fertiliser.
🔒 Bagasse → power, paper · Molasses → ethanol (E20 target) · Press mud → organic manure.
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