What are the separation techniques commonly mentioned in NCERT?

NCERT commonly mentions several basic separation techniques that are used in daily life and form the foundation of understanding mixtures. These methods are simple, practical, and based on physical properties.

Some of the key techniques include handpicking, threshing, and winnowing, which are mainly used in agriculture and household activities. Sieving is used for separating particles of different sizes, while sedimentation and decantation help in separating heavier insoluble solids from liquids.

Filtration is used to remove fine insoluble particles, and evaporation is used to obtain dissolved solids from liquids. In some cases, condensation is also discussed along with evaporation, especially in processes like distillation.

In simple terms, NCERT focuses on easy and commonly used methods that help students understand how substances can be separated in real life.