NCERT · Class 8 · Science · Coal and PetroleumWhen heated in air, coal burns and produces mainly:
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Total Attempts: 1
Accuracy Rate: 100%
Step-by-Step Solution
When coal is heated in air, it burns and produces mainly carbon dioxide gas along with heat.
Detailed Options Breakdown
Option : Oxygen gas
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Coal and Petroleum.
Option 1: Hydrogen gas
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Coal and Petroleum.
Option 2: Carbon dioxide gas (Correct Answer)
Correct choice. Refer to the step-by-step verified solution guidelines above for details.
Option 3: Nitrogen gas
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Coal and Petroleum.
💡 Study Guide: This question tests core syllabus concepts from Coal and Petroleum. For formulas, key summaries, and mock exam reference guides, read the full Coal and Petroleum Revision Notes.