Question:
Which of the following is not a compound?
Which of the following is not a compound?
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A compound must consist of two or more different elements, whereas a molecule made of only one type of element is not considered a compound.
Updated On: Feb 16, 2025
- Ammonia
- Water
- Oxygen
- Carbon dioxide
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The Correct Option is C
Solution and Explanation
A compound is a substance formed from two or more elements chemically bonded together. Let's analyze each option:
Ammonia (NH$_3$) is a compound made up of nitrogen and hydrogen.
Water (H$_2$O) is a compound made up of hydrogen and oxygen.
Oxygen (O$_2$) is a molecule consisting of two oxygen atoms, not a compound, since it contains only one type of element.
Carbon dioxide (CO$_2$) is a compound made up of carbon and oxygen. Thus, the correct answer is (3) Oxygen.
Ammonia (NH$_3$) is a compound made up of nitrogen and hydrogen.
Water (H$_2$O) is a compound made up of hydrogen and oxygen.
Oxygen (O$_2$) is a molecule consisting of two oxygen atoms, not a compound, since it contains only one type of element.
Carbon dioxide (CO$_2$) is a compound made up of carbon and oxygen. Thus, the correct answer is (3) Oxygen.
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