General Science - Physics (Basics)
Which of the following has a fixed chemical composition?
Which of the following has a fixed chemical composition?
easy Q13 of 15
Step-by-Step Solution
Step 1: Identify the concept
The question tests knowledge of substances with fixed chemical composition, characteristic of compounds.Step 2: Apply the concept
Water (H₂O) is a compound with hydrogen and oxygen chemically combined in a fixed ratio. Salt solution, air, and soil are mixtures with variable composition.Final Answer:
Water (H₂O) → Option AQuick Check:
Fixed composition = Water (H₂O) ✅
Quick Trick: Compounds have fixed ratios; mixtures do not.
Common Mistakes:
MISTAKES- Confusing solutions like salt water as compounds.
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