Class 8
Science
Chapter 1
Curiosity (latest NCERT)
Exploring the Investigative World of Science
Free NCERT practice questions for Class 8 Science, Chapter 1 — 47 questions across MCQs, short-answer, long-answer and more. Download a printable PDF worksheet in seconds. No signup, no ads, no paywall.
What this chapter covers
Class 8 Science Chapter 1 'Exploring the Investigative World of Science' from the new NCERT Curiosity textbook orients students to scientific thinking itself: making observations, asking questions, designing simple investigations, controlling variables, recording data and drawing conclusions. The chapter prepares the foundation for every later chapter by emphasising that science is a way of finding out, not a list of facts to memorise.
Key topics in this chapter
- Observation and question-asking
- Hypothesis and prediction
- Designing simple experiments
- Controlling variables
- Recording and interpreting data
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 good experiment, how many things should you change at a time?
(a) As many as possible
(b) Only one
(c) Two or three
(d) None
Answer: Only one
Short Answer
Medium
3 marks
Describe the four main steps of a systematic investigation.
Answer: • Ask a focused question about something you observe.
• Design a simple experiment to test it (change one thing at a time).
• Observe and record what happens.
• Use the results to improve your understanding and ask the next question.
Fill in the Blank
Medium
1 mark
In a fair experiment, change one variable at a time and keep the other __________ the same.
Answer: conditions
Very Short
Medium
1 mark
Name the four steps of a systematic investigation.
Answer: Ask a question, design an experiment, observe and record, improve understanding.
True / False
Medium
1 mark
State True or False: A systematic investigation needs only observation, not creative thinking.
Answer: False. It needs both observation and creative thinking.
Long Answer
Hard
5 marks
Imagine you want to investigate why a puri puffs up when fried. Describe how you would design this as a systematic investigation.
Answer: • Question: What makes a puri puff up?
• Identify control variables: dough thickness, dough size, type of flour, oil temperature, way of dropping it.
• Identify observed variables: whether it puffs (yes/no), time taken to puff.
• Change one variable at a time (e.g. oil temperature), keep others constant.
• Record observations carefully for each trial.
• Compare results and improve understanding.
Generate a worksheet with all 47 questions →
Frequently asked questions
What is included in Class 8 Science Chapter 1 (Exploring the Investigative World of Science)?
This chapter has 47 NCERT-aligned practice questions covering all the concepts from the Curiosity textbook's Chapter 1. Questions span easy, medium and hard levels across 8 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?
47 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 Exploring the Investigative World of Science?
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, long, match, mcq, 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.