Class 8 Science — Chapter 7: Particulate Nature of Matter
72 practice questions · 24 Easy · 24 Medium · 24 Hard
Practise the most important Class 8 Science questions from Chapter 7, "Particulate Nature of Matter" — 72 NCERT-aligned multiple-choice questions with answers and explanations. The set is split into 24 Easy, 24 Medium and 24 Hard, so you can warm up on the fundamentals and then push into the exam-level problems that separate top scorers in CBSE Board exams.
"Particulate Nature of Matter" is one of the chapters where concept clarity across physics, chemistry and biology basics really pays off. Each MCQ on this chapter is timed and uses exam-grade marking (+4 correct, −1 wrong, 0 skipped), training the same negative-marking accuracy-under-pressure that real papers demand. Every question carries a short explanation, so a wrong answer becomes a quick lesson rather than a dead end — the fastest way to close gaps before a test.
Use this chapter as targeted revision: attempt the Easy set first to confirm your basics on Particulate Nature of Matter, then move to Medium and Hard to test application and problem-solving. Your accuracy, streaks and XP save automatically, and the chapter feeds into your overall Class 8 Science mastery score. A sample question is shown below; sign in free to see its answer and practise all 72.
Key concepts: Particulate Nature of Matter (Class 8 Science)
This chapter explains matter using tiny particles. All matter is made of extremely small constituent particles, with interparticle spaces between them and forces of attraction holding them together. How closely the particles are packed and how freely they move decides the state: in a solid they are tightly packed and only vibrate (fixed shape and volume); in a liquid they are a little farther apart and move within a limited space (fixed volume, no fixed shape); in a gas they are far apart and move freely (no fixed shape or volume, easily compressed). Heating gives particles energy, which drives melting, boiling and other state changes.
- Particle nature of matter
- All matter is made of extremely small constituent particles, too tiny to see, which are the basic building blocks of a substance.
- Interparticle space
- The gaps between particles. Sugar dissolving in water without changing its volume shows there is space between the water particles.
- Forces of attraction
- Particles are held together by forces of attraction, which are strongest in solids, weaker in liquids and weakest in gases.
- Solid state
- Particles are closely packed with strong attraction and only vibrate about fixed positions, so a solid has a fixed shape and a fixed volume and barely compresses.
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Why does a solid keep its shape?
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Start this chapter free →Particulate Nature of Matter — FAQs
What are the key concepts in Class 8 Science Particulate Nature of Matter?+
This chapter explains matter using tiny particles. All matter is made of extremely small constituent particles, with interparticle spaces between them and forces of attraction holding them together. How closely the particles are packed and how freely they move decides the state: in a solid they are tightly packed and only vibrate (fixed shape and volume); in a liquid they are a little farther apart and move within a limited space (fixed volume, no fixed shape); in a gas they are far apart and move freely (no fixed shape or volume, easily compressed). Heating gives particles energy, which drives melting, boiling and other state changes. Key ideas include Particle nature of matter, Interparticle space, Forces of attraction, Solid state.
What does Class 8 Science Chapter 7 (Particulate Nature of Matter) cover on XamBaaz?+
It covers 72 NCERT-aligned MCQs on "Particulate Nature of Matter" — 24 Easy, 24 Medium and 24 Hard — each with a timed quiz and an instant explanation, suitable for CBSE Board exams.
Are these "Particulate Nature of Matter" questions free to practise?+
Yes — sign in with Google to practise "Particulate Nature of Matter" free. Full unlimited access is ₹999/year (limited-time launch price), with no per-chapter charges.
How should I revise "Particulate Nature of Matter" for the exam?+
Start with the Easy quiz to confirm your fundamentals, then attempt Medium and Hard for application-level practice. Review each explanation, retry the questions you miss, and track your accuracy on this chapter until it is consistently high.
Are these "Particulate Nature of Matter" MCQs available with answers?+
Yes. This page shows one sample question so you can see the format; sign in free with Google to reveal the correct option and a step-by-step "Why" explanation for it, then practise all 72 questions with instant scoring.
Is there negative marking in the "Particulate Nature of Matter" quizzes?+
Yes — the timed quizzes use exam-grade marking: +4 for a correct answer, −1 for a wrong one and 0 for a skipped question, so you practise the same negative-marking discipline as CBSE Board exams.
Are these important questions for Particulate Nature of Matter?+
The set is curated to the NCERT syllabus and weighted toward the question patterns that actually appear in CBSE Board exams, across Easy, Medium and Hard — so it doubles as an "important questions" revision list for "Particulate Nature of Matter".