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Which of these is a colloid?

ASalt
BMilk
CSand
DIron
Answer & Solution
Correct answer: B. Milk
1. A colloid sits between a solution and a suspension. 2. Its particles never settle out on standing. 3. Milk, tomato sauce and ice cream are colloids. 4. So the answer is milk. _Source: NCERT Class 9 Science, Ch 5 'Exploring Mixtures and their Separation'_
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