Green Steel and Decarbonisation MCQ — 69 Practice Questions with Answers

Q1. Consider the following statements about scrap-based steelmaking and recycling: 1) IEA states that scrap-based production is considerably less energy-intensive than producing steel from iron ore. 2) IEA gives the current scrap collection rate as about 85%. 3) IEA says scrap availability and quality are constraints on this route. 4) IEA says recycling alone can meet all raw-material needs for steel decarbonisation. Which of the statements given above are correct?

Q2. Consider the following statements about certification under India's Green Steel Taxonomy: 1. The taxonomy includes Scope 1 direct emissions from operations. 2. It excludes Scope 2 electricity-related indirect emissions from rating calculations. 3. Scope 3 activities listed include sintering, pellet making, coke making and raw material procurement. 4. NISST is designated as the nodal agency for measurement, reporting and verification and issuing green certificates. Which of the statements given above are correct?

Q3. Consider the following statements about green hydrogen use in steel decarbonisation: 1. The National Green Hydrogen Mission supports pilot projects in the steel sector. 2. One eligible pilot route is one hundred per cent hydrogen-based direct reduced ironmaking using a vertical shaft. 3. The pilot guidelines prohibit hydrogen injection in existing blast furnaces. Which of the statements given above are correct?

Q4. Consider the following statements about EASyMelt technology being deployed at Tata Steel Jamshedpur: 1) EASyMelt replaces a significant share of metallurgical coke with syngas as the reducing agent in iron-making. 2) The project is expected to reduce CO2 emissions by less than ten per cent compared to baseline blast furnace operation. Which of the statements given above is/are correct?

Q5. Consider the following statements about green hydrogen in Indian steelmaking: 1) The Government states that hydrogen-based production of green steel is already commercially viable in India. 2) Supported projects focus on partial substitution of natural gas with hydrogen in vertical shaft-based DRI production. 3) Supported projects also include injection of hydrogen into existing blast furnaces to reduce coal and coke consumption. 4) The Ministry of Steel page treats solar and wind energy as relevant to producing green hydrogen. Which of the statements given above are correct?