Class 8 Science Chapter 1: Exploring the Investigative World of Science — practice questions with answers
Free practice for Class 8 Science, Chapter 1: Exploring the Investigative World of Science. Try the solved questions below, then take a free test with instant marking and explanations.
52 questions18 easy, 29 medium, 5 hardNCERT · CBSE · State boards
Sample questions with solutions
Q1. What is the main aim of learning science through investigation?
- To learn how to find new facts by investigating
- To memorise more facts
- To finish experiments quickly
- To avoid asking questions
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Answer: A. To learn how to find new facts by investigating
Why: ‘We don’t want you to just learn new facts, we want you to learn how to find new facts.’ [p.2]
Why: ‘We don’t want you to just learn new facts, we want you to learn how to find new facts.’ [p.2]
Q2. What often happens after one round of experiments?
- New questions arise, like whether fresh dough puffs better
- Science is complete
- No more questions remain
- The answer is always final
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Answer: A. New questions arise, like whether fresh dough puffs better
Why: Each answer opens new questions. [p.7]
Why: Each answer opens new questions. [p.7]
Q3. Where can simple science experiments be done?
- Even in your kitchen at home
- Only in big laboratories
- Only in space
- Only at universities
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Answer: A. Even in your kitchen at home
Why: You don’t need a fancy laboratory. [p.6]
Why: You don’t need a fancy laboratory. [p.6]
Q4. Which topic in Grade 8 deals with tiny organisms in a drop of water?
- The invisible living world of microbes
- Light and lenses
- Forces
- Keeping time with the skies
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Answer: A. The invisible living world of microbes
Why: Some microbes help digest food or make medicines; some cause infections. [p.3]
Why: Some microbes help digest food or make medicines; some cause infections. [p.3]
Q5. Which help us stay healthy and fight infections, as previewed? (Tick all that apply)
- Nutritious food
- Exercise
- Medicines and vaccines
- Skipping sleep
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Answer: A. Nutritious food; B. Exercise; C. Medicines and vaccines
Why: Health chapter preview. [p.3]
Why: Health chapter preview. [p.3]
Q6. Which effect of electric current keeps us warm in heaters?
- Heating effect
- Magnetic effect
- Chemical effect
- Lighting effect only
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Answer: A. Heating effect
Why: The magnetic effect helps motors run. [p.3]
Why: The magnetic effect helps motors run. [p.3]
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Frequently asked questions
How many practice questions are there for Class 8 Science Chapter 1: Exploring the Investigative World of Science?
52 questions (18 easy, 29 medium, 5 hard). A few are solved on this page; the free test shows the answer and explanation for every question after you submit.
Is this chapter from the NCERT book?
Yes — it follows the NCERT Class 8 Science syllabus, used by CBSE and many state boards.