General Science - Physics (Basics)
Which of the following is an element?
Which of the following is an element?
easy Q11 of 15
Step-by-Step Solution
Step 1: Identify the concept
The question tests the ability to recognize an element, which is a pure substance made of only one type of atom.Step 2: Apply the concept
Oxygen (O₂) consists of only oxygen atoms and is an element. Water and salt are compounds, and air is a mixture.Final Answer:
Oxygen (O₂) → Option AQuick Check:
Element example = Oxygen (O₂) ✅
Quick Trick: Elements contain only one type of atom.
Common Mistakes:
MISTAKES- Confusing oxygen gas (element) with compounds like water or salt.
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