https://hi.khanacademy.org/science/kn-class-8-sciencenew/x62ed4e3748459c99:combustion-and-flame/x62ed4e3748459c99:fuel-and-their-efficiency/v/what-is-fuel 2025-06-22T05:46:34.906655626Z ईधन क्या है? (What is Fuel ?) What is a fuel? Why do we use different fuels for cooking, vehicles, and industries? In this video, we explore the meaning of fuel, what makes a fuel “good,” and why no fuel is truly ideal. Learn how fuels are classified into solid, liquid, and gaseous types, and understand the key features of an ideal fuel like cost-effectiveness, safety, and energy output. Shankar Nair video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw ईधन क्या है? (What is Fuel ?) What is a fuel? Why do we use different fuels for cooking, vehicles, and industries? In this video, we explore the meaning of fuel, what makes a fuel “good,” and why no fuel is truly ideal. Learn how fuels are classified into solid, liquid, and gaseous types, and understand the key features of an ideal fuel like cost-effectiveness, safety, and energy output. https://cdn.kastatic.org/ka-youtube-converted/VOIyEL4qH-w.mp4/VOIyEL4qH-w.mp4 345 Fuel and their efficiency