Yes, cooking oil and water form separate layers because they are immiscible and oil is less dense. Oil forms the upper layer. A separating funnel can separate the two layers by draining water first.
The label on a cooking oil pack says one litre (910 g). If this oil is mixed with water, will it form a separate layer? If so, which substance will be on top? How will you separate the two layers? Also, draw the diagram of the apparatus used.
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Yes, cooking oil and water form two separate layers because they are immiscible liquids. One litre of oil has a mass of 910 g, so it is less dense than water. Therefore, oil forms the upper layer and water forms the lower layer. The layers can be separated using a separating funnel by opening the stopcock to collect the lower water layer first, followed by oil.
For more NCERT Solutions of Class 9 Science Exploration Chapter 5 Exploring Mixtures and their Separation Question Answer (2026-27)
https://www.tiwariacademy.com/ncert-solutions/class-9/science/exploration-chapter-5/