Hydrogen–oxygen Fuel Cells
Bayani Gaba-gaba
Imagine a power source that runs on hydrogen and oxygen and whose only waste product is pure water. That is a hydrogen-oxygen fuel cell, a device that turns the energy of a chemical reaction straight into electricity without burning anything. Car makers and spacecraft engineers alike have looked to it as a clean alternative to the petrol engine.
In this lesson you will learn what a fuel cell does, why water is its only chemical product, and how it compares with a petrol engine. You will weigh the genuine advantages, such as cleaner emissions and high efficiency, against the real hurdles of making, storing and moving hydrogen safely.
Manufura
- State that a hydrogen-oxygen fuel cell uses hydrogen and oxygen to produce electricity with water as the only chemical product.
- [Supplement] Describe the advantages and disadvantages of using hydrogen-oxygen fuel cells in comparison with gasoline / petrol engines in vehicles.
Takardar Darasi
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Nazarin Darasi
Barka da kammala darasi akan Hydrogen–oxygen Fuel Cells. Yanzu da kuka bincika mahimman raayoyi da raayoyi, lokaci yayi da zaku gwada ilimin ku. Wannan sashe yana ba da ayyuka iri-iri Tambayoyin da aka tsara don ƙarfafa fahimtar ku da kuma taimaka muku auna fahimtar ku game da kayan.
Za ka gamu da haɗe-haɗen nau'ikan tambayoyi, ciki har da tambayoyin zaɓi da yawa, tambayoyin gajeren amsa, da tambayoyin rubutu. Kowace tambaya an ƙirƙira ta da kyau don auna fannoni daban-daban na iliminka da ƙwarewar tunani mai zurfi.
Yi wannan ɓangaren na kimantawa a matsayin wata dama don ƙarfafa fahimtarka kan batun kuma don gano duk wani yanki da kake buƙatar ƙarin karatu. Kada ka yanke ƙauna da duk wani ƙalubale da ka fuskanta; maimakon haka, ka kallesu a matsayin damar haɓaka da ingantawa.
- What is the only chemical product of a hydrogen-oxygen fuel cell? A. Carbon dioxide B. Hydrogen peroxide C. Water D. Oxygen Answer: C
- Which equation represents the overall reaction in a hydrogen-oxygen fuel cell? A. 2H2 + O2 -> 2H2O B. H2 + O2 -> H2O2 C. C + O2 -> CO2 D. 2H2O -> 2H2 + O2 Answer: A
- Which is an advantage of a hydrogen fuel cell over a petrol engine in a vehicle? A. Hydrogen is easier to store than petrol B. It produces no carbon dioxide at the point of use C. It needs no fuel supply D. It works like an ordinary battery Answer: B
- Which is a disadvantage of using hydrogen fuel cells in cars? A. They emit carbon dioxide B. Hydrogen is difficult to store and transport safely C. They have many moving parts D. They produce soot Answer: B
- Which statement about a fuel cell is correct? A. It stores a fixed amount of energy like a battery B. It produces electricity while hydrogen and oxygen are supplied C. Its main product is carbon dioxide D. It burns hydrogen to make heat only Answer: B
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Zazzage manhajar Green Bridge CBT a wayar ka ko kwamfyuta ka don samun cikakkiyar bayanan darasi, tambayoyin aiki, da ƙari.
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