Class 9
Science
Chapter 7
Exploration (latest NCERT)
Work, Energy, and Power
Free NCERT practice questions for Class 9 Science, Chapter 7 — 92 questions across MCQs, short-answer, long-answer, numericals and more. Download a printable PDF worksheet in seconds. No signup, no ads, no paywall.
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
The expression for kinetic energy is:
(a) mgh
(b) ½mv²
(c) mv
(d) ma
Answer: ½mv²
Short Answer
Medium
3 marks
State the conditions for work to be done.
Answer: • A force must act on the object.
• The object must be displaced.
• The displacement must have a component in the direction of the force.
Fill in the Blank
Easy
1 mark
Work done = force × __________ (in the direction of force).
Answer: displacement
Numerical
Medium
3 marks
A 50 kg student is lifted straight up to the top of a 72.5 m building (g = 10 m/s²). Find the gain in potential energy. Would it differ if she climbed the stairs?
Answer: • PE = mgh = 50×10×72.5 = 36250 J.
• Same via stairs — PE depends only on height, not path.
Very Short
Medium
1 mark
State the work-energy theorem.
Answer: Work done on an object equals the change in its energy.
True / False
Medium
1 mark
State True or False: A motionless stretched rubber band has kinetic energy.
Answer: False. It has potential energy (due to deformation), not kinetic energy.
Generate a worksheet with all 92 questions →
Frequently asked questions
What is included in Class 9 Science Chapter 7 (Work, Energy, and Power)?
This chapter has 92 NCERT-aligned practice questions covering all the concepts from the Exploration textbook's Chapter 7. 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 Exploration textbook?
Yes. Every question on Practico for Class 9 Science is mapped directly to the latest NCERT Exploration 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?
92 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 Work, Energy, and Power?
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.