2016
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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N2O
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CH4
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CO2
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H2O
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Detailed explanation-1: -The catalyst takes climate-warming carbon-dioxide (CO2) and converts it to carbon-monoxide (CO), a useful building block for carbon-based chemical fuels, such as methanol, ethanol and diesel.
Detailed explanation-2: -Before being transformed into a useful product, CO2 must be chemically converted into carbon monoxide (CO). That conversion can be encouraged using electrochemistry, a process in which input voltage provides the extra energy needed to make the stable CO2 molecules react.
Detailed explanation-3: -Electrochemical fuels This mixture of carbon monoxide and hydrogen is widely used to make other chemicals, including fuels.
Detailed explanation-4: -But what if we could simply recycle all that wasted CO2 and turn it into something useful? By adding electricity, water, and a variety of catalysts, scientists can reduce CO2 into short molecules such as carbon monoxide and methane, which they can then combine to form more complex hydrocarbon fuels like butane.
Detailed explanation-5: -Splitting carbon dioxide (CO2) into carbon and oxygen can in fact be accomplished, but there is a catch: doing so requires energy. If hydrocarbon fuels, which produce the greenhouse gas in the first place, supply that energy, thermodynamics tells us that the net result will be more CO2 than you started with.