What is one use of hydrogen? A. Making plastics B. Producing glass C. Generating electricity in fuel cells D. Building houses 相关知识点: 试题来源: 解析 C。解析:文中提到 Hydrogen is used as a fuel in fuel cells to generate electricity.,所以答案是 C。
Hydrogen energy is considered a promising new energy. What is hydrogen usually obtained from? A. Coal B. Oil C. Natural gas D. Water 相关知识点: 试题来源: 解析 D。解析:氢能被认为是一种有前途的新能源。氢通常从水中获得。A、B、C 选项都是传统化石能源,不是氢的来源。本题考查对氢能来源...
Choose the correct answer. ( ) 1. What is the chemical symbol for hydrogen? A. H2 B. Hg C. He D. H 相关知识点: 试题来源: 解析 ( ) 1. D ( ) 2. C ( ) 2. Which of the following is a physical change? A. Burning of paper B. Rusting of iron C. Dissolving sugar in wat...
D. What to do to mako hydrogen suitable34. What is a problem with the previous way of storing hydrogen in salts A. It wastes lots of salts B. It needs valuable catalysts releases poisonous gases. D. It destroys the purity of hydrogen 相关知识点: 试题来源: 解析 答案见上 反馈 收藏...
They are combined with carbon dioxide in the dark - reaction C. They are used to generate ATP D. They are directly converted into glucose 相关知识点: 试题来源: 解析 C。解析:在光反应中,水被分解后,氢离子被用于产生ATP。氢离子在类囊体膜内外形成电化学梯度,这个梯度的能量被用于合成ATP。选项A,...
The reaction between sodium and water produces sodium hydroxide and hydrogen. What is the balanced equation? A. Na + H₂O = NaOH + H₂ B. 2Na + 2H₂O = 2NaOH + H₂ C. 2Na + H₂O = 2NaOH + H₂ D. Na + 2H₂O = NaOH + 2H₂ ...
百度试题 结果1 题目 36. In this experiment, what is used to split water into hydrogen and oxygen? C A. Salt. B. Scissors. C. Electricity. D. Cardboard. 相关知识点: 试题来源: 解析 答案见上 反馈 收藏
In the experiment of preparing hydrogen gas, the yield is low. What can be done to improve? A. Use a larger container B. Reduce the amount of reactants C. Purify the reactants D. Improve the sealing of the device 相关知识点: ...
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When sodium reacts with water, it produces hydrogen gas. What is the other product? A. sodium hydroxide B. sodium oxide C. sodium chloride D. sodium sulfate 相关知识点: 试题来源: 解析 A。钠与水反应生成氢氧化钠和氢气。反馈 收藏