Question map
Consider the following statements : Statement I : Of the two major ethanol producers in the world, i.e., Brazil and the United States of America, the former produces more ethanol than the latter. Statement II : Unlike in the United States of America where corn is the principal feedstock for ethanol production, sugarcane is the principal feedstock for ethanol production in Brazil. Which one of the following is correct in respect of the above statements?
Explanation
**Statement I is incorrect.** The United States is the world's largest producer of ethanol, having produced over 15 billion gallons in 2021[1] and 2022. In comparison, Brazil's corn ethanol is expected to reach 10 billion liters (2.64 billion gallons) by 2025/26, and sugarcane ethanol has remained relatively stable at around 28 billion liters (7.4 billion gallons) annually[2], giving Brazil a total of roughly 10 billion gallons. Therefore, the United States produces more ethanol than Brazil, not the other way around.
**Statement II is correct.** Sugarcane ethanol has remained relatively stable at around 28 billion liters annually in Brazil, while corn ethanol is expected to account for nearly one-third of Brazil's total ethanol production[2], confirming sugarcane remains the principal feedstock in Brazil. Additionally, sugarcane juice can be used to prepare molasses which is fermented to give alcohol (ethanol), and some countries now use alcohol as an additive in petrol[3]. The United States primarily uses corn for ethanol production, as it is the dominant corn-based ethanol producer globally.
Sources- [1] https://afdc.energy.gov/data/10331
- [2] https://farmdocdaily.illinois.edu/2025/04/ethanol-boom-drives-sharp-rise-in-brazils-corn-consumption.html
- [3] Science , class X (NCERT 2025 ed.) > Chapter 4: Carbon and its Compounds > Alcohol as a fuel > p. 73
PROVENANCE & STUDY PATTERN
Full viewThis is a classic 'Comparative Economic Geography' question. It fuses static agricultural knowledge (Crop distribution: Corn vs Sugarcane) with industrial output rankings (Energy production). While books confirm the feedstock, the production ranking requires current economic awareness or logical derivation from the scale of US agriculture.
This question can be broken into the following sub-statements. Tap a statement sentence to jump into its detailed analysis.
- Statement 1: As of 2025, which of the two major ethanol-producing countries—Brazil or the United States—had the higher annual ethanol production by volume?
- Statement 2: As of 2025, is corn the principal feedstock for ethanol production in the United States?
- Statement 3: As of 2025, is sugarcane the principal feedstock for ethanol production in Brazil?
- Provides Brazil's recent/2025-era ethanol volumes broken down by feedstock and gives gallon equivalents.
- Shows Brazil's sugarcane ethanol ~28 billion liters (7.4 billion gallons) plus corn ethanol ~10 billion liters (2.64 billion gallons), implying Brazil's total ≈ 10.04 billion gallons by 2025/26.
- States the United States is the world's largest ethanol producer and gives a recent annual production figure.
- Reports the U.S. produced over 15 billion gallons in 2021 and 2022, a level higher than Brazil's ~10.04 billion gallons indicated for 2025/26.
States the United States has the highest maize harvest in the world (major feedstock for ethanol).
A student could combine this with the outside fact that much U.S. ethanol is corn-based to infer the U.S. has large ethanol-making capacity from maize production.
Defines crops used to produce liquid biofuels (ethanol), listing sugarcane and maize among primary feedstocks.
Use this rule to link crop-dominance (maize for U.S., sugarcane for Brazil) to each country's likely ethanol production potential.
Notes raw sugar comes mainly from sugarcane and lists Brazil as a leading producer of sugarcane-derived sugar.
A student could combine Brazil's strong sugarcane production with the fact that Brazil commonly uses sugarcane for ethanol to infer high ethanol output potential.
Mentions sugarbeet and the U.S.A. as a producer, indicating the U.S. also has temperate-region sugar feedstocks usable for ethanol.
This suggests the U.S. has multiple ethanol feedstock sources (maize and beet), reinforcing its overall ethanol production capacity when combined with maize data.
- Explicitly states fuel ethanol is derived primarily from sugar or starch crops, identifying the relevant feedstock types.
- Notes the United States and Brazil account for the vast majority of world ethanol production, linking the U.S. to the 'starch' category (as Brazil is associated with sugar).
- Specifically references 'Corn ethanol' and corn-based biofuels, showing corn is a key starch feedstock for ethanol.
- Supports the identification of corn as the starch crop used to produce ethanol (consistent with starch-based ethanol noted in passage 7).
Lists 'starch-containing materials like corn' explicitly as eligible feedstocks for ethanol production (policy-level mention of corn as a feedstock).
A student could combine this with knowledge of US agricultural output to infer corn is a commonly used feedstock and then check US-specific ethanol feedstock statistics.
States the USA has the highest harvest of maize (corn) worldwide and contributes ~20% of global production, indicating large domestic corn availability.
A student can link high domestic corn supply to likely industrial uses (including ethanol) and compare volumes of ethanol production feedstock in US data.
Describes the US Corn Belt as accounting for more than half the world's corn production and notes most corn is used for animal feed—shows large-scale corn production and established commodity uses.
A student could reason that this production scale makes corn a logical major feedstock for other large domestic industries like ethanol and then seek US ethanol feedstock breakdowns.
Notes that ethanol produced from 'food stocks' (implying crops such as corn) came under attack, motivating a shift toward non-food cellulose feedstocks—implies food crops have been used historically for ethanol.
A student could treat this as contextual evidence that food crops (e.g., corn) were significant ethanol feedstocks and then check contemporary US practice to see if corn remains principal.
Identifies sugarbeet as a 'potential source of ethanol' and mentions multiple crop sources—indicates there are alternative feedstocks to corn for ethanol production.
A student can use this to remind themselves alternatives exist and so should verify whether corn or alternatives are dominant in the US by consulting US-specific feedstock shares.
- Identifies Brazil as the world’s leading producer of sugarcane
- High national production implies abundant raw material for industrial uses such as ethanol
- Explains that sugarcane juice can be processed into molasses and fermented to produce ethanol
- Directly links sugarcane processing to ethanol production pathway
- Specifies sugarcane plantations are associated with Brazil
- Supports the geographic and agricultural basis for large-scale sugarcane-based ethanol production
- [THE VERDICT]: Manageable Trap. Statement II is standard NCERT Geography; Statement I is a 'General Awareness' fact often covered in Economy/Environment current affairs.
- [THE CONCEPTUAL TRIGGER]: Economic Geography > Agro-based Industries > Biofuels. Specifically, the 'Food vs Fuel' debate.
- [THE HORIZONTAL EXPANSION]: 1. Global Ethanol Ranking: USA (~55%) > Brazil (~27%) > EU > China > India. 2. Feedstocks: USA (Corn), Brazil (Sugarcane), EU (Sugarbeet/Wheat), China (Corn/Cassava), India (Molasses/Maize/Rice). 3. India's Target: E20 (20% blending) by 2025-26. 4. Global Biofuel Alliance (GBA) members.
- [THE STRATEGIC METACOGNITION]: Do not study crops in isolation. Always map 'Resource -> Industry'. If you study Maize, ask 'Who grows the most?' (USA) and 'What do they use it for?' (Animal feed & Ethanol). The scale of the US Corn Belt suggests massive industrial capacity.
Ethanol production depends on primary feedstocks such as sugarcane, maize and sugarbeet which determine national production capacity.
High-yield: Understanding which crops supply ethanol helps explain why countries with large maize or sugarcane harvests can be major ethanol producers; connects agriculture, energy policy and trade, and helps answer comparative questions on biofuel output.
- Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 12: Major Crops and Cropping Patterns in India > 16. Energy Crops > p. 13
- Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 12: Major Crops and Cropping Patterns in India > Maize or Corn (Zea Mays) > p. 23
- Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 12: Major Crops and Cropping Patterns in India > Sugarbeet (Beta vulgaris) > p. 36
Mandates and targets for ethanol blending directly influence domestic ethanol demand and therefore production levels.
High-yield: Mastery of how policy drives production is useful for questions on energy transition, climate policy and rural economy; it enables analysis of how regulatory targets can accelerate or limit national ethanol output.
- Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 23: India and Climate Change > ruffi ,l.x ii E > p. 316
- Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 23: India and Climate Change > 23.15. PROMOTION OF BIOFUELS > p. 315
Large raw sugar production from sugarcane signals greater potential capacity for ethanol production from sugarcane-based processes.
High-yield: Knowing major sugarcane/raw-sugar producers allows informed inference about ethanol-producing capability and links to agro-industry and trade questions; useful for comparative country analyses on biofuel resources.
- Certificate Physical and Human Geography , GC Leong (Oxford University press 3rd ed.) > Chapter 26: Agriculture > World Production and Distribution Distribution > p. 260
- Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 12: Major Crops and Cropping Patterns in India > Sugarbeet (Beta vulgaris) > p. 36
The United States is the world’s largest producer of maize and a large share of US corn is used for animal feed.
High-yield concept for questions on agricultural output and commodity uses; links cropping patterns, food security and industrial demand. Mastering this helps answer questions on resource allocation (food vs industrial uses) and on regional economic geography of the US Corn Belt.
- Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 12: Major Crops and Cropping Patterns in India > Maize or Corn (Zea Mays) > p. 23
- Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 30: Climatic Regions > Corn > p. 454
- Certificate Physical and Human Geography , GC Leong (Oxford University press 3rd ed.) > Chapter 21: The Warm Temperate Eastern Margin (China Type) Climate > Economic Development > p. 203
Biofuel policy can explicitly list eligible feedstocks including starch-based crops such as corn and other sources like molasses and sugar beet.
Important for policy-analysis questions on energy security and agricultural policy; connects national policy choices to market demand for crops and to trade-offs in land use. Knowing policy categories enables evaluation of how governments diversify ethanol supply.
- Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 23: India and Climate Change > ruffi ,l.x ii E > p. 316
- Indian Economy, Nitin Singhania .(ed 2nd 2021-22) > Chapter 15: Infrastructure > NATIONAL POLICY ON BIOFUELS, 2018 > p. 453
- Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 12: Major Crops and Cropping Patterns in India > Sugarbeet (Beta vulgaris) > p. 36
There is a policy and industry shift toward non-food cellulose feedstocks and establishment of second-generation ethanol plants.
Key for questions on sustainability, climate change mitigation and technological responses in the biofuels sector; links biotechnology, corporate strategy and environmental policy. Understanding this distinction helps assess debates on food‑fuel competition and future feedstock trends.
- Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 6: Environmental Issues > Who are behind developing GE trees and why? > p. 123
- Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 8: Energy Resources > 5. Ethanol Blending Programme > p. 17
Sugarcane provides fermentable sugars (via juice/molasses) that are converted into ethanol and is abundant in Brazil.
High-yield for questions on biofuels and renewable energy because it links crop production to fuel policy and industrial processing; connects agriculture, energy resources, and rural economy topics; enables answering questions on feedstock choices, comparative advantages, and biofuel value chains.
- Science , class X (NCERT 2025 ed.) > Chapter 4: Carbon and its Compounds > Alcohol as a fuel > p. 73
- Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 12: Major Crops and Cropping Patterns in India > Sugarcane (Saccharum spp) > p. 34
Biodiesel Feedstocks. Since Ethanol (Petrol substitute) was asked, expect Biodiesel (Diesel substitute). Top producers: Indonesia (Palm Oil), USA/Brazil (Soybean Oil), EU (Rapeseed/Canola). Also, watch for 'Sustainable Aviation Fuel' (SAF) feedstocks like Used Cooking Oil (UCO).
The 'Superpower Scale' Heuristic. The US Corn Belt is the largest contiguous agricultural zone for a single crop in the world. In industrial processing of agricultural commodities, the US volume is rarely beaten by Brazil. If you assume USA > Brazil, Statement I becomes False. Only Option D allows Statement I to be incorrect. Solved.
GS-3 (Economy & Environment): The 'Food vs Fuel' ethical dilemma. Using Corn (USA) or Sugarcane (Brazil) links energy security to food inflation. This is a perfect point for Mains answers on Energy Security or Agricultural Policy.