General Science - Physics (Basics)
Which of the following mixtures can be separated by simple physical methods without changing chemical properties?
Which of the following mixtures can be separated by simple physical methods without changing chemical properties?
hard Q10 of 15
Step-by-Step Solution
Step 1: Understand physical separation
Physical methods separate mixtures without chemical changes.Step 2: Analyze options
Sand and iron filings can be separated by magnetism and filtration, simple physical methods. Water and alcohol form a homogeneous mixture requiring distillation; salt and sugar are both soluble and require complex methods; hydrogen and oxygen gases form a mixture but require special methods.Step 3: Explain why others are wrong
Water and alcohol need distillation; salt and sugar dissolve similarly; gases require gas separation techniques.Final Answer:
Sand and iron filings mixture → Option DQuick Check:
Physical separation = Sand and iron filings mixture ✅
Quick Trick: Use magnetism to separate iron from sand.
Common Mistakes:
MISTAKES- Assuming all mixtures can be separated by simple physical methods.
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