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C(s) + O 2 (g)  CO 2 (g) + 400 kJ kJ ) g ( CO ) g ( O ) s ( C 100 2 1 2    Whe n coal of purity 60% is allowed to burn in presence of insufficient oxygen, 60% of carbon is converted into 'CO' and the remaining is converted into 'CO 2 '. The heat generated when 0.6 kg of coal is burnt is ______.

1. 1600 kJ
2. 3200 kJ
3. 4400 kJ
4. 6600 kJ

Correct answer: 6600 kJ

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