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By Karan Singh Bisht
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Updated on 13 May 2026, 15:46 IST
NCERT MCQ Solutions for Class 8 Science Curiosity Chapter 1 Exploring the Investigative World of Science are designed for students preparing for the 2026-27 session. These objective questions help students understand important concepts such as observation, experimentation, analysis, and conclusion in a simple way.
Each MCQ is created to improve logical thinking, scientific reasoning, and exam readiness. The questions follow the latest NCERT syllabus and are useful for quick revision, classroom practice, and self-assessment.
Students can use the Class 8 Science Chapter 1 MCQ with Answers PDF to revise the chapter easily. They can also access Class 8 Science MCQ with Answers Chapter 1 PDF Download and practice from the Class 8 Science Chapter 1 MCQ PDF for better preparation in the 2026–27 session.
This chapter introduces students to the fundamentals of scientific investigation and inquiry. The MCQs are based on all important topics covered in the chapter.
Topics Included:
These topics help students understand how scientific discoveries are made and why experiments are important in learning science.
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Students can download the PDF worksheet containing important MCQ questions based on the latest NCERT syllabus. The PDF is designed in a student-friendly format to make learning simple and effective.
1. What is the starting point of scientific investigation?
A) Observation
B) Memorization
C) Wonder and curiosity
D) Drawing conclusions
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Answer: C) Wonder and curiosity
2. Which tool helps us observe microorganisms?
A) Telescope
B) Microscope
C) Thermometer
D) Compass
Answer: B) Microscope
3. Which process is used to test a scientific idea?
A) Guessing
B) Experimentation
C) Storytelling
D) Drawing
Answer: B) Experimentation
4. Why do scientists perform experiments?
A) For entertainment
B) To verify observations and hypotheses
C) To memorize facts
D) To avoid conclusions
Answer: B) To verify observations and hypotheses
5. What helps scientists draw conclusions?
A) Assumptions
B) Observations and evidence
C) Imagination only
D) Rumors
Answer: B) Observations and evidence
6. What causes a puri to puff up while frying?
A) Cold air
B) Steam pressure inside the dough
C) Ice formation
D) Gravity
Answer: B) Steam pressure inside the dough
7. Which branch of science studies tiny living organisms?
A) Astronomy
B) Biology
C) Microbiology
D) Geology
Answer: C) Microbiology
8. What is the main purpose of scientific investigation?
A) Entertainment
B) Understanding natural phenomena
C) Decoration
D) Competition
Answer: B) Understanding natural phenomena
9. Which force pulls objects toward Earth?
A) Magnetic force
B) Frictional force
C) Gravitational force
D) Electrostatic force
Answer: C) Gravitational force
10. Why is observation important in science?
A) It helps in collecting information
B) It wastes time
C) It avoids experiments
D) It changes results
Answer: A) It helps in collecting information
11. Which instrument is used to study distant planets?
A) Microscope
B) Telescope
C) Thermometer
D) Stopwatch
Answer: B) Telescope
12. What is a hypothesis?
A) A random guess
B) A tested explanation
C) A possible explanation based on observation
D) A conclusion
Answer: C) A possible explanation based on observation
13. Which gas exerts pressure in all directions?
A) Water vapor
B) Air
C) Oxygen only
D) Nitrogen only
Answer: B) Air
14. Why do objects appear bent in water?
A) Reflection
B) Refraction
C) Gravity
D) Friction
Answer: B) Refraction
15. Which natural object helped early humans measure time?
A) Stars
B) Moon
C) Rivers
D) Trees
Answer: B) Moon
16. What is the scientific method based on?
A) Random guessing
B) Observation and experimentation
C) Magic
D) Luck
Answer: B) Observation and experimentation
17. Which process involves collecting and recording data?
A) Observation
B) Decoration
C) Singing
D) Painting
Answer: A) Observation
18. Why should only one variable be changed during an experiment?
A) To confuse results
B) To identify the exact cause
C) To save time
D) To avoid recording data
Answer: B) To identify the exact cause
19. Which phenomenon helps explain weather changes?
A) Air pressure
B) Reflection
C) Refraction
D) Magnetism
Answer: A) Air pressure
20. Cyclones are formed due to differences in:
A) Soil type
B) Atmospheric pressure
C) Plant growth
D) Water color
Answer: B) Atmospheric pressure
21. Which of the following is an example of observation?
A) Measuring temperature
B) Guessing answers
C) Ignoring results
D) Sleeping
Answer: A) Measuring temperature
22. Why are notes important during experiments?
A) To decorate notebooks
B) To keep records of observations
C) To waste paper
D) To avoid conclusions
Answer: B) To keep records of observations
23. What do scientists use to study stars and planets?
A) Barometer
B) Microscope
C) Telescope
D) Scale
Answer: C) Telescope
24. What kind of particles are present in gases?
A) Fixed particles
B) Closely packed particles
C) Freely moving particles
D) Heavy particles
Answer: C) Freely moving particles
25. Which process helps scientists predict storms?
A) Measuring pressure and wind patterns
B) Measuring soil
C) Measuring plant growth
D) Measuring sound
Answer: A) Measuring pressure and wind patterns
26. What does curiosity encourage in science?
A) Laziness
B) Investigation and questioning
C) Fear
D) Memorization
Answer: B) Investigation and questioning
27. Which surface produces clear reflections?
A) Rough surface
B) Smooth surface
C) Wet soil
D) Paper
Answer: B) Smooth surface
28. Which process explains the bending of light?
A) Reflection
B) Refraction
C) Friction
D) Gravity
Answer: B) Refraction
29. Why is science important for environmental protection?
A) It increases pollution
B) It helps understand environmental changes
C) It stops rainfall
D) It destroys forests
Answer: B) It helps understand environmental changes
30. Which of the following is necessary for scientific thinking?
A) Creativity
B) Curiosity
C) Observation
D) All of these
Answer: D) All of these
31. What is the role of evidence in science?
A) To confuse results
B) To support conclusions
C) To avoid experiments
D) To decorate reports
Answer: B) To support conclusions
32. What happens when air particles move faster?
A) Pressure decreases always
B) Pressure changes occur
C) Light disappears
D) Water freezes
Answer: B) Pressure changes occur
33. What causes winds to move?
A) Gravity
B) Pressure differences
C) Reflection
D) Sound waves
Answer: B) Pressure differences
34. Which question is scientific?
A) Why do stars shine?
B) What is your favorite color?
C) Which food tastes best?
D) Which game is fun?
Answer: A) Why do stars shine?
35. Which skill is most important during investigation?
A) Observation
B) Sleeping
C) Forgetting
D) Guessing
Answer: A) Observation
36. Why do scientists repeat experiments?
A) To waste time
B) To verify results
C) To avoid conclusions
D) To confuse others
Answer: B) To verify results
37. What is used to measure atmospheric pressure?
A) Thermometer
B) Microscope
C) Barometer
D) Compass
Answer: C) Barometer
38. Which of the following is a natural satellite of Earth?
A) Mars
B) Venus
C) Moon
D) Jupiter
Answer: C) Moon
39. What helps in developing scientific knowledge?
A) Observation and reasoning
B) Guessing
C) Storytelling
D) Rumors
Answer: A) Observation and reasoning
40. Which factor affects how a puri puffs up?
A) Dough thickness
B) Oil temperature
C) Moisture content
D) All of these
Answer: D) All of these
41. Which branch of science studies weather?
A) Meteorology
B) Botany
C) Zoology
D) Chemistry
Answer: A) Meteorology
42. Which process helps us understand light behavior?
A) Reflection and refraction
B) Digestion
C) Respiration
D) Evaporation
Answer: A) Reflection and refraction
43. Why are experiments performed systematically?
A) To get reliable results
B) To confuse observations
C) To increase errors
D) To waste materials
Answer: A) To get reliable results
44. What is the main source of scientific learning?
A) Superstition
B) Observation and inquiry
C) Imagination only
D) Luck
Answer: B) Observation and inquiry
45. What does a microscope help us observe?
A) Planets
B) Mountains
C) Tiny organisms
D) Cyclones
Answer: C) Tiny organisms
46. Which process helps in forming scientific conclusions?
A) Experimentation
B) Observation
C) Analysis
D) All of these
Answer: D) All of these
47. What should scientists do after conducting experiments?
A) Ignore results
B) Record and analyze observations
C) Forget data
D) Stop investigation
Answer: B) Record and analyze observations
48. Which property of air helps in weather formation?
A) Pressure
B) Color
C) Smell
D) Taste
Answer: A) Pressure
49. Why is questioning important in science?
A) It leads to investigation and discovery
B) It wastes time
C) It avoids learning
D) It creates confusion
Answer: A) It leads to investigation and discovery
50. What is the ultimate goal of scientific investigation?
A) Understanding the world around us
B) Memorizing facts only
C) Winning competitions
D) Avoiding experiments
Answer: A) Understanding the world around us
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Students can get chapter-wise Class 8 Science Chapter 1 MCQ with Answers PDF on Infinity Learn. The platform provides NCERT-based MCQs, worksheets, notes, sample papers, and chapter-wise study material for effective exam preparation.
Yes, the MCQs available on Infinity Learn are prepared according to the latest NCERT and CBSE syllabus. The questions are designed by subject experts and aligned with current exam patterns and competency-based learning.
Yes, students can download the Class 8 Science Chapter 1 MCQ PDF for free from Infinity Learn. The PDFs help students practice offline, revise important concepts, and improve exam preparation.
Yes, these MCQs are useful for Olympiad preparation because they include conceptual, analytical, and application-based questions. Regular MCQ practice on Infinity Learn helps students improve logical thinking and problem-solving skills.
Students should practice MCQs for Chapter 1 Science to improve conceptual understanding, scientific reasoning, accuracy, and confidence. MCQs also help in quick revision and exam preparation. Infinity Learn provides chapter-wise MCQs, notes, worksheets, and sample papers to support complete learning and revision.