4.7 - Fuel Efficiency
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Practice Questions
Test your understanding with targeted questions
What is the calorific value of LPG?
💡 Hint: Think about which fuel produces the most heat.
Name one solid fuel.
💡 Hint: This fuel is commonly used in many households.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the calorific value of coal?
💡 Hint: Consider the range provided in the section.
True or False: LPG produces more pollutants than coal.
💡 Hint: Evaluate the environmental impact of both fuels.
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Challenge Problems
Push your limits with advanced challenges
If you have 10 kg of cow dung and 5 kg of LPG, calculate the total energy produced if cow dung gives 7000 kJ/kg, and LPG gives 55000 kJ/kg.
💡 Hint: Break it down by calculating the energy from each fuel separately.
A household using coal emits 10 times more CO2 than a household using LPG. If the LPG household emits 100 kg of CO2 per month, how much does the coal household emit?
💡 Hint: What multiplier do we need to consider for the emissions?
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Reference links
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