UPSC CSE Prelims
Industrial Development in India Previous Year Questions (PYQs)
Practice solved questions for Industrial Development in India with detailed step-by-step solutions, key insights, and trend analysis for UPSC CSE PRELIMS.
Solved Previous Year Questions
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In India the steel production industry requires the import of
Detailed Explanation:
India has abundant reserves of iron ore, the primary raw material for steel production.
However, India lacks sufficient high-quality coking coal (metallurgical coal), which is essential for the blast furnace process in steel manufacturing, making it a key import.
Saltpetre (potassium nitrate) is used in fertilizers and explosives, while rock phosphate is a fertilizer raw material—neither is directly used in steel production.
With reference to the usefulness of the by-products of the sugar industry, which of the following statements is/are correct?
- Bagasse can be used as biomass fuel for the generation of energy.
- Molasses can be used as one of the feedstocks for the production of synthetic chemical fertilizers.
- Molasses can be used for the production of ethanol.
Select the correct answer using the codes given below.
Detailed Explanation:
✅ Statement 1 – Correct: Bagasse (fibrous residue after sugarcane crushing) is widely used as biomass fuel for co-generation of electricity in sugar mills, making them energy self-sufficient.
❌ Statement 2 – Incorrect: Molasses is not a feedstock for synthetic chemical fertilizers; these are produced through Haber-Bosch process (ammonia) and phosphate/potash mining, not from sugar by-products.
✅ Statement 3 – Correct: Molasses serves as a key feedstock for ethanol production through fermentation, supporting India's Ethanol Blending Programme (EBP) for fuel.
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