Which element is present in all organic compounds?

• A. Oxygen
• B. Carbon
• C. Nitrogen
• D. Sulfur

Answer: (B)

Verified step by step guidance

1. Understand the definition of organic compounds: Organic compounds are primarily made up of carbon atoms bonded to hydrogen, oxygen, nitrogen, and other elements.
2. Recall that the key characteristic of organic chemistry is the study of carbon-containing compounds, which means carbon is the central element in all organic molecules.
3. Recognize that while oxygen, nitrogen, and sulfur can be present in many organic compounds, they are not found in every single one.
4. Identify that carbon is unique because it forms the backbone of all organic compounds, making it the essential element present in all of them.
5. Conclude that the element present in all organic compounds is carbon.