Class 9 Science — Chapter 6: Work and Energy
90 practice questions · 30 Easy · 30 Medium · 30 Hard
Practise Class 9 Science Chapter 6, "Work and Energy", with 90 NCERT-aligned multiple-choice questions. The set is split into 30 Easy, 30 Medium and 30 Hard questions, so you can warm up on the fundamentals and then push into the exam-level problems that separate top scorers in CBSE Board exams and the JEE & NEET foundation years.
"Work and Energy" 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 (+2 correct, −1 wrong, 0 skipped), training the same 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 Work and Energy, 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 9 Science mastery score. A few sample questions are shown below; sign in free to practise all 90.
Key concepts: Work and Energy (Class 9 Science)
This chapter describes plant and animal tissues — groups of similar cells doing a common job — and classifies their main types and functions.
- Tissue
- A group of cells similar in structure that work together to perform a particular function.
- Meristematic tissue
- Dividing plant tissue responsible for growth — apical (length), lateral (girth) and intercalary (at nodes).
- Permanent plant tissue
- Simple tissues (parenchyma for storage, collenchyma for flexibility, sclerenchyma for strength) and complex tissues (xylem, phloem) that transport.
- Xylem and phloem
- Xylem carries water and minerals upward; phloem carries food (translocation) in both directions.
- Animal tissue types
- Epithelial (covering/lining), connective (blood, bone, cartilage, adipose), muscular and nervous tissues.
- Muscle types
- Striated/voluntary (skeletal), smooth/involuntary, and cardiac muscle (in the heart, involuntary).
💡 Exam tips for Work and Energy
- Blood is a connective tissue — its matrix is the fluid plasma.
- Neurons (nerve cells) are the longest cells and form nervous tissue that conducts impulses.
Sample questions
SI unit of work is:
1 joule = 1 newton × 1 metre.
A 10 N force moves an object 5 m in the direction of force. Work done =
W = F × d = 10 × 5 = 50 J.
Work done is zero when:
W = Fd cos θ. When θ = 90°, cos 90° = 0 ⇒ W = 0.
Work and Energy — FAQs
What are the key concepts in Class 9 Science Work and Energy?+
This chapter describes plant and animal tissues — groups of similar cells doing a common job — and classifies their main types and functions. Key ideas include Tissue, Meristematic tissue, Permanent plant tissue, Xylem and phloem, Animal tissue types.
What does Class 9 Science Chapter 6 (Work and Energy) cover on XamBaaz?+
It covers 90 NCERT-aligned MCQs on "Work and Energy" — 30 Easy, 30 Medium and 30 Hard — each with a timed quiz and an instant explanation, suitable for CBSE Board exams and the JEE & NEET foundation years.
Are these "Work and Energy" questions free to practise?+
Yes — sign in with Google to practise "Work and Energy" free. Full unlimited access is ₹999/year (limited-time launch price), with no per-chapter charges.
How should I revise "Work and Energy" 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.
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