Class 8
Science
Chapter 9
Curiosity (latest NCERT)
The Amazing World of Solutes, Solvents, and Solutions
Free NCERT practice questions for Class 8 Science, Chapter 9 — 106 questions across MCQs, short-answer, long-answer, numericals and more. Download a printable PDF worksheet in seconds. No signup, no ads, no paywall.
What this chapter covers
Class 8 Science Chapter 9 'The Amazing World of Solutes, Solvents, and Solutions' from NCERT Curiosity studies how substances dissolve. Students learn solvent, solute and solution terminology, the factors affecting solubility (temperature, nature of solute and solvent, stirring), and the concept of saturated and unsaturated solutions. The chapter introduces density (D = m / V) numerically, with float-sink reasoning and many worked examples.
Key topics in this chapter
- Solute, solvent, solution
- Factors affecting solubility
- Saturated and unsaturated solutions
- Density D = m / V (numerical)
- Float-sink reasoning
Sample questions from this chapter
Here are 6 real questions students will encounter when they generate a worksheet for this chapter. Every question includes the answer.
MCQ
Medium
1 mark
In a solution of two liquids, the component present in lesser quantity is the:
(a) Solvent
(b) Mixture
(c) Solute
(d) Pure substance
Answer: Solute
Short Answer
Medium
3 marks
Differentiate between a saturated and an unsaturated solution.
Answer: • Saturated: cannot dissolve any more solute at the given temperature.
• Unsaturated: can still dissolve more solute at that temperature.
• Heating can usually turn a saturated solid solution into an unsaturated one.
Fill in the Blank
Medium
1 mark
In a liquid-liquid solution, the component in lesser quantity is called the __________.
Answer: solute
Numerical
Medium
3 marks
A stone sculpture has mass 225 g and volume 90 cm³. Find its density. Will it float or sink in water?
Answer: • D = m/V = 225/90 = 2.5 g/cm³.
• D > 1.0 g/cm³ (water), so the sculpture sinks.
Very Short
Medium
1 mark
How does temperature affect the solubility of solids in liquids in general?
Answer: It generally increases with temperature.
True / False
Medium
1 mark
State True or False: Oxygen gas is more soluble in hot water than in cold water.
Answer: False. Gases are LESS soluble in hot water; correct version: oxygen is more soluble in COLD water.
Generate a worksheet with all 106 questions →
Frequently asked questions
What is included in Class 8 Science Chapter 9 (The Amazing World of Solutes, Solvents, and Solutions)?
This chapter has 106 NCERT-aligned practice questions covering all the concepts from the Curiosity textbook's Chapter 9. Questions span easy, medium and hard levels across 10 different formats so students get a balanced practice set.
Are these questions based on the new NCERT Curiosity textbook?
Yes. Every question on Practico for Class 8 Science is mapped directly to the latest NCERT Curiosity textbook (the one CBSE schools are using now). The chapter numbers and chapter titles match the textbook exactly.
How many questions can I practice from this chapter?
106 questions are available right now. You can pick how many you want at a time — generate 10 quick MCQs, a 30-question worksheet, or a full exam-style mix. Each generation gives you a different random set.
Can I download a free PDF worksheet for The Amazing World of Solutes, Solvents, and Solutions?
Yes — completely free, no sign-up required. Pick this chapter, choose the number of questions and types you want, and download a printable PDF (with or without answers) in one click.
What question types are available?
This chapter has assertion reason, fill blank, image, long, match, mcq, numerical, short, true false, very short. You can mix any combination, or filter to just the type you want to practice — for example, only numericals to drill calculation, or only short-answer questions for exam revision.
Is Practico aligned with CBSE exam patterns?
Yes. Practico questions are tagged by marks (1, 2, 3, 5) and by difficulty (Easy/Medium/Hard) just like CBSE exam blueprints, so you can build a worksheet that mirrors a real unit test or annual exam.