Class 9 Science Chapter 5 Exploring Mixtures and their Separation– Latest Concept Clarity MCQs with Answers | New NCERT Book 2026–27 Edition

 Welcome to our Class 9 Science Chapter 5 Exploring Mixtures and their Separation Concept Clarity MCQs with Answers. This practice set contains latest MCQs based on the new NCERT Class 9 Science Book 2026–27 Edition and is designed to help students strengthen their understanding of important concepts related to cells, their structure, cell organelles, and their functions.

These concept-based MCQs focus on understanding rather than memorisation, helping students test their conceptual clarity and identify areas that need improvement. The questions are ideal for Class 9 students preparing for school examinations, revision, and concept-based assessments according to the latest NCERT textbook and syllabus for the 2026–27 academic session.

Exploring Mixtures and their Separation Current Concept Clarity MCQs with Answers:-

Q1. A mixture that has a uniform composition throughout is called a:

a) Heterogeneous mixture
b) Homogeneous mixture
c) Suspension
d) Colloid

Q2. Which of the following is a homogeneous mixture?

a) Sand and water
b) Oil and water
c) Sugar and water
d) Chalk powder and water

Q3. Which of the following is a heterogeneous mixture?

a) Vinegar
b) Soda water
c) Sand and water
d) Salt solution

Q4. Which mixture is expected to leave a residue on the filter paper?

a) Salt and water
b) Sugar and water
c) Chalk powder and water
d) Vinegar

Q5. Which statement about a solution is correct?

a) Its particles settle on standing.
b) It is always heterogeneous.
c) It always remains homogeneous.
d) It can always be separated by filtration.

Q6. The amount of solute dissolved in a given amount of solvent or solution is called the:

a) density
b) concentration
c) filtration
d) evaporation

Q7. The substance that gets dissolved in a solution is called the:

a) solvent
b) solute
c) mixture
d) residue

Q8. Which of the following requires the correct concentration for safe use?

a) ORS preparation
b) Pesticide spraying
c) Medicines
d) All of these

Q9. While preparing ORS, the amount of salt and sugar should be:

a) any amount
b) doubled every time
c) in the correct specified proportion
d) less than the amount of water only

Q10. Mass by mass percentage (% m/m) tells us the grams of solute present in:

a) 100 mL of solution
b) 100 g of solvent
c) 100 g of solution
d) 1 kg of solution

Q11. Which formula is used to calculate mass by mass percentage?

a) (Mass of solute ÷ Mass of solution) × 100
b) (Mass of solution ÷ Mass of solute) × 100
c) (Volume of solute ÷ Volume of solution) × 100
d) (Mass of solvent ÷ Mass of solution) × 100 

Q12. Mass by volume percentage (% m/v) tells us the grams of solute present in:

a) 100 g of solution
b) 100 g of solvent
c) 100 mL of solution
d) 1000 mL of solution

Q13. If 10 g of salt is dissolved in 90 g of water, the mass by mass percentage is:

a) 5%
b) 10%
c) 20%
d) 90%

Q14. Volume by volume percentage (% v/v) is mainly used for:

a) Solids dissolved in liquids
b) Two miscible liquids
c) Insoluble solids in water
d) Gases dissolved in solids

Q15. Which of the following products commonly uses volume by volume percentage (% v/v)?

a) Milk powder
b) Vinegar
c) Salt
d) Sugar crystals

Q16. Which statement is correct about % m/m and % w/w?

a) They are always different.
b) % w/w is greater than % m/m.
c) They are numerically equal.
d) % m/m is used only for liquids.

Q17. The maximum amount of solute that dissolves in a fixed amount of solvent at a given temperature is called:

a) concentration
b) solubility
c) filtration
d) evaporation

Q18. A solution that cannot dissolve any more solute at a given temperature is called a:

a) dilute solution
b) unsaturated solution
c) saturated solution
d) concentrated solution

Q19. The solubility of most solid solutes in liquid solvents generally:

a) decreases with increase in temperature
b) remains constant
c) increases with increase in temperature
d) becomes zero at high temperature

Q20. The solubility of gases in liquids generally:

a) increases with increase in temperature
b) decreases with increase in temperature
c) remains unchanged with temperature
d) first increases and then decreases

Q21. Solubility is an important property used to:

a) measure density
b) separate substances from mixtures
c) identify metals only
d) increase the boiling point of water

Q22. A graph showing solubility versus temperature is called a:

a) heating curve
b) cooling curve
c) solubility curve
d) concentration curve

Q23. In a solubility curve, the x-axis represents:

a) pressure
b) solubility
c) temperature
d) mass of solute

Q24. A saline drip used in hospitals contains:

a) 0.09% m/v sodium chloride
b) 0.9% m/v sodium chloride
c) 9% m/v sodium chloride
d) 90% m/v sodium chloride

Q25. Understanding the concentration of a solution is important in:

a) medicine and agriculture
b) food and cosmetics
c) laboratories and daily life
d) all of these

🧠 TopperGuru1 Concept Check

Before checking the answer key, ask yourself these two questions for every MCQ:

✅ Why is the correct option right?

✅ Why are the other three options wrong?

If you can explain both, your concept is truly clear. If not, revise the related NCERT concept and try again.

Remember: Real learning happens when you understand the reason, not when you memorize the answer. 

Answer Key:-

1-(b) | 2-(c) | 3-(c) | 4-(c) | 5-(c) | 6-(b) | 7-(b) | 8-(d) | 9-(c) | 10-(c) | 11-(a) | 12-(c) | 13-(b) | 14-(b) | 15-(b) | 16-(c) | 17-(b) | 18-(c) | 19-(c) | 20-(b) | 21-(b) | 22-(c) | 23-(c) | 24-(b) | 25-(d)

Class 9 Science Chapter 5 Exploring Mixtures and their Separation MCQs – Keep Practising!

We hope these Class 9 Science Chapter 5 Exploring Mixtures and their Separation MCQs with Answers helped you test your conceptual understanding of the chapter. These latest concept clarity MCQs are based on the new NCERT Class 9 Science Book 2026–27 Edition and are designed to strengthen your concepts and prepare you for exams.

How many questions did you answer correctly? Check your answers using the answer key above and revise the concepts where you made mistakes.

Keep practising with TopperGuru1 for more Class 9 Science MCQs, concept clarity questions, and chapter-wise practice questions with answers based on the latest NCERT syllabus.

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