Separation techniques. Science CBSE, Class 9: lessons, tests, tasks.

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1.	What is purification
2.	Simple distillation
3.	Evaporation
4.	Crystallisation
5.	Water purification process
6.	Chromatography
7.	Sublimation
8.	Filtration
9.	Separating funnel
10.	Centrifugation
11.	Fractional Distillation
12.	Separation of components from air
13.	Physical and chemical changes

1.	Evaporation, crystallisation: Drag the correct options Difficulty: easy	2
2.	Physical and chemical changes: Analogy-type questions Difficulty: easy	2
3.	Analyse the statements about physical and chemical changes Difficulty: easy	2
4.	Answer the questions about distillation and sublimation Difficulty: easy	2
5.	Match the words about separation techniques Difficulty: medium	3
6.	Choose the correct answer about separation process Difficulty: medium	4
7.	Purification process: Find the correct options for the given pictures Difficulty: medium	2
8.	Separation methods: statement and word match Difficulty: medium	2
9.	'True' or 'false' about purification techniques Difficulty: medium	2
10.	Separation process: unscramble the jumbled words Difficulty: medium	2
11.	Distillation and centrifugation: Drag the correct options Difficulty: hard	2
12.	Analyse the statements about purity of matter Difficulty: hard	4

1.	Training Test 1 Difficulty: medium	7
2.	Progress Test Difficulty: medium	6

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Methodical recommendation

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