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Class 9 Science Exploration Solutions English Medium
Download latest NCERT Solutions for Class 9 based on CBSE 2026-27 syllabus. Get chapter-wise detailed explanations, step-by-step answers, important questions and exam-ready study material in Hindi and English medium.
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Class 9 Science Exploration Solutions English Medium
NCERT Solutions for Class 9 are specially prepared according to the latest CBSE syllabus (2026-27) to help students understand every concept clearly. These solutions provide step-by-step explanations, accurate answers, and exam-oriented guidance for all chapters. Class 9 students can improve their problem-solving skills, strengthen conceptual understanding, and prepare confidently for school as well as board examinations. All questions are solved in a simple and easy-to-understand language for both Hindi and English medium learners.
Class 9 Science Exploration Solutions English Medium
NCERT Solutions Class 9 Science Exploration English Medium
Exploring Mixtures and their Separation
Topic: Various Filtration Methods
Chapter 5. Exploring Mixtures and their Separation
This section explains the different physical methods used for separating the components of mixtures. These methods are selected according to the properties of the substances such as particle size, density, solubility, boiling point and magnetic nature.
17. Principles of Separation
Different mixtures require different separation methods because the components differ in their physical properties. By selecting a suitable method, useful substances can be recovered without changing their chemical nature.
Physical Properties Used for Separation
- Particle Size – Used in filtration and sieving.
- Density – Used in sedimentation, decantation and separating funnel.
- Solubility – Used in crystallisation and evaporation.
- Boiling Point – Used in distillation and fractional distillation.
- Magnetic Property – Used to separate magnetic substances from non-magnetic substances.
18. Sedimentation
When a mixture of an insoluble solid and a liquid is left undisturbed, the heavier solid particles settle at the bottom due to gravity.
Definition
Sedimentation is the process in which heavier insoluble particles settle at the bottom of a liquid under the action of gravity.
Applications
- Removing sand from muddy water.
- Purification of river water.
- Water treatment plants.
19. Decantation
After sedimentation, the clear liquid present above the settled particles is carefully poured into another container.
Definition
Decantation is the process of separating a clear liquid from settled solid particles by carefully pouring it into another container.
Applications
- Separating muddy water.
- Removing oil floating over water.
- Laboratory separation processes.
20. Filtration
Filtration is used to separate insoluble solid particles from a liquid by passing the mixture through a filter medium.
Definition
Filtration is the process of separating insoluble solids from liquids using filter paper or another porous material.
Main Parts
- Residue – Insoluble solid left on the filter paper.
- Filtrate – Clear liquid that passes through the filter paper.
Applications
- Preparing tea.
- Water purification.
- Laboratory experiments.
21. Evaporation
Evaporation is commonly used to obtain dissolved solids from a solution. During this process, the solvent changes into vapour, leaving the dissolved solid behind.
Definition
Evaporation is the process of converting a liquid into vapour to obtain the dissolved solid.
Applications
- Obtaining common salt from seawater.
- Preparation of crystals.
- Chemical industries.
22. Crystallisation
Crystallisation is used to obtain pure solid crystals from a saturated solution. It is preferred when a pure solid is required.
Definition
Crystallisation is the process of obtaining pure crystals of a substance from its saturated solution.
Advantages
- Produces Pure Crystals
- Removes Soluble Impurities
- Prevents Decomposition of Heat-sensitive Solids
Applications
- Preparation of copper sulphate crystals.
- Purification of common salt.
- Manufacture of medicines.
23. Difference Between Evaporation and Crystallisation
| Evaporation | Crystallisation |
|---|---|
| Obtains dissolved solid by removing the solvent. | Obtains pure crystals from a saturated solution. |
| Purity may be lower. | Produces highly pure crystals. |
| Simple and faster. | Requires slow cooling and crystal formation. |
| Used for common salt production. | Used in laboratories and industries. |
24. Centrifugation
Centrifugation is used to separate very fine suspended particles from a liquid by spinning the mixture at high speed.
Definition
Centrifugation is the process of separating substances based on differences in density using rapid spinning.
Applications
- Separating cream from milk.
- Blood testing in laboratories.
- Medical and research laboratories.
25. Magnetic Separation
Magnetic separation is used when one component of a mixture is magnetic while the other is non-magnetic.
Definition
Magnetic separation is the process of separating magnetic materials from non-magnetic materials using a magnet.
Applications
- Separating iron filings from sand.
- Recycling industries.
- Mining operations.
26. Choosing the Correct Separation Method
| Mixture | Suitable Method |
|---|---|
| Sand + Water | Filtration |
| Muddy Water | Sedimentation and Decantation |
| Salt + Water | Evaporation / Crystallisation |
| Milk + Cream | Centrifugation |
| Iron Filings + Sand | Magnetic Separation |
ATP Education Tip
For CBSE examinations, remember the principle behind each separation technique instead of only memorising its name. Filtration → Particle Size, Sedimentation → Density, Evaporation → Volatility of Solvent, Crystallisation → Difference in Solubility, Centrifugation → Density Difference, Magnetic Separation → Magnetic Property. Selecting the correct method for a given mixture is one of the most frequently asked competency-based questions.
See other Sub-topics of this chapter:
1. Chapter Review and Key Points
3. Solution and Its Components
NCERT Solutions Class 9 Hindi and English Medium – Complete Study Material
NCERT Solutions Class 9 students ke liye specially CBSE latest syllabus (2026-27) ke according prepare kiye gaye hain. Yeh solutions Hindi aur English medium dono ke liye available hain, jisse har student apni language preference ke hisaab se padh sakta hai. Har chapter ke sabhi prashnon ke step-by-step answers diye gaye hain jo concept clarity aur exam preparation me madad karte hain.
Chapter-Wise Detailed Explanations
Class 9 ke liye diye gaye Chapter Wise NCERT Solutions me har question ka detailed aur easy explanation diya gaya hai. Chahe aap CBSE Board Exam Preparation kar rahe ho ya school test ke liye revise kar rahe ho, yeh solutions aapko complete understanding denge. Har answer simple language me likha gaya hai jisse students concepts ko easily grasp kar saken.
Hindi and English Medium Support
Students Hindi aur English medium dono me NCERT Book Solutions Class 9 access kar sakte hain. Yeh dual language support un students ke liye helpful hai jo apni regional language me better samajhna chahte hain. Sabhi answers CBSE Latest Syllabus 2026-27 ke anusaar update kiye gaye hain.
Important Features of NCERT Solutions
- Class 9 NCERT Solutions PDF
- CBSE Class 9 Study Material
- NCERT Book Questions and Answers
- Exam Oriented Important Questions
- Step-by-Step Detailed Solutions
- Concept Clarity and Revision Notes
Why Students Should Use NCERT Solutions?
Aaj ke competitive environment me sirf textbook padhna kaafi nahi hota. NCERT Solutions for Class 9 students ko practice aur conceptual understanding dono provide karte hain. Yeh solutions unhe exam pattern samajhne, frequently asked questions practice karne aur high score achieve karne me madad karte hain. Regular practice se students apne weak topics ko improve kar sakte hain.
Best Resource for Exam Preparation
Agar aap Class 9 CBSE Preparation ke liye ek trusted aur reliable source dhundh rahe hain, to yeh NCERT Solutions perfect choice hain. Yeh study material school exams, unit tests, half-yearly aur annual exams ke liye equally useful hai. Har chapter ke answers accurate, verified aur student-friendly format me diye gaye hain.
Isliye agar aap NCERT Solutions Class 9 Hindi and English Medium search kar rahe hain, to yahan aapko complete chapter-wise solutions milenge jo aapki academic journey ko strong aur confident banayenge.