GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Carbon and hydrogen
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Carbon and oxygen
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Oxygen and hydrogen
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Carbon and nitrogen
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Detailed explanation-1: -This means that all organic compounds have in common the presence of carbon atoms and hydrogen atoms. In addition, different organic compounds may contain oxygen, nitrogen, phosphorous, and other elements.
Detailed explanation-2: -Organic compounds composed of only carbon and hydrogen are called hydrocarbons.
Detailed explanation-3: -Hydrocarbons are organic molecules consisting entirely of carbon and hydrogen. We often use hydrocarbons in our daily lives: for instance, the propane in a gas grill and the butane in a lighter are both hydrocarbons.
Detailed explanation-4: -organic molecules ALWAYS contain carbon and hydrogen and are typically structurally complex!
Detailed explanation-5: -There are four classes of macromolecules (polysaccharides or carbohydrates, triglycerides or lipids, polypeptides or proteins, and nucleic acids such as DNA & RNA). Carbohydrates and lipids are made of only carbon, hydrogen, and oxygen (CHO).