Which of the following is/are the characteristic/ characteristics of Indian coal ?1. High ash content2. Low sulphur content3. Low ash fusion temperatureSelect the correct answer using the codes given below:
✓ Correct answer: a) 1 and 2 only
ExplanationIndian coal is predominantly of the bituminous to sub-bituminous variety, which accounts for over 80% of the non-coking coal reserves in India.Bituminous coal is widely used in India, particularly in power plants, but the high ash con- tent requires effective ash handling and disposal systems.Option 1 is correct : Indian coal is characterized by a high ash content, which refers to the non-combustible residue left after burning coal.This is a significant characteristic of coal in India, making it less efficient and more environmentally damaging when burned.Option 2 is correct : Indian coal has a low sulphur content, which makes it relatively cleaner than coals from other regions that have higher sulfur levels.This reduces the emissions of harmful sulfur dioxide when the coal is burned.Option 3 is incorrect : Indian coal typically has a high ash fusion temperature (about 1,500°C).The ash fusion temperature re- fers to the temperature at which the ash in coal begins to soften and fuse, and Indian coal is known for its high ash fusion tem- perature, making it more resistant to fus
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