SSC
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a gas at room temperature.
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made of two different elements.
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given off by green plants.
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None of the above
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Detailed explanation-1: -Answer: Solution: Carbon is an element and Carbon dioxide constitutes of carbon and oxygen which are both independent elements combined together in a fixed ratio to form carbon dioxide. Carbon is combustible and oxygen supports combustion, but carbon dioxide extinguishes fire.
Detailed explanation-2: -Carbon is considered as the element of live because all the biomolecules are made up of carbon. The essential biomolecules like carbohydrates, proteins, lipids, even the nucleic acids are made up of carbon. Carbon is so unique due to the four valence electrons present in it.
Detailed explanation-3: -(b) Carbon Dioxide is a compound that is composed of a carbon atom and two oxygen atoms. The compound formed cannot be separated into constituent elements by any physical method.