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Chemistry CBSE Live product
Class 9 (2026-27)
Exploring Mixtures and Their Separation
PT1 Revision II - Exploring Mixtures and Their Separation
9.
Coagulation
Question:
4
m.
Answer the following questions:
When we take a look around the classroom, we have variety of objects. All these are made up of matter. Explain the nature of matter.
1.
What is the scientific term for the settling of aggregated particles?
Sedimentation of flocs
The physical state of matter remains unchanged
Aggregation of larger particles
The attraction between the particles of matter remains unchanged
2.
What is the role of alum in this process?
Air is non-compressable, and squeezing reduces the space between particles
Alum neutralizes the charge on particles, allowing them to come together
Alum neutralizes the charge on particles, allowing them become more finer
Air is non-compressable, and squeezing increases the space between particles
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