Class 8 Science Most Repeated MCQS
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Looking for the most repeated Class 8 Science MCQs to ace your exams? This post offers a curated collection of frequently asked multiple-choice questions from past papers and important chapters. Perfect for quick revision and practice, these Class 8 Science MCQs with answers cover key topics like Physics, Chemistry, and Biology. Boost your confidence and score higher with these exam-focused questions. Ideal for CBSE, ICSE, and other school boards.
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Class 8 Science Most Repeated MCQs with Answers | Important Objective Questions for Class 8
Looking for the most important and frequently asked Class 8 Science MCQs? This guide contains Science multiple choice questions (MCQs) that are highly likely to appear in your exams. These Class 8 Science objective questions are based on NCERT chapters and focus on Physics, Chemistry, Biology, and Environmental Science.
Looking for the most important and frequently asked Class 8 Science MCQs? This guide contains Science multiple choice questions (MCQs) that are highly likely to appear in your exams. These Class 8 Science objective questions are based on NCERT chapters and focus on Physics, Chemistry, Biology, and Environmental Science.
🔬 Chapter 1: Crop Production and Management
1. Which of the following is not a method of irrigation?
A) Drip
B) Sprinkler
C) Ploughing
D) Furrow
✅ Answer: C) Ploughing
2. The process of separation of grain from chaff is called:
A) Winnowing
B) Threshing
C) Sowing
D) Weeding
✅ Answer: A) Winnowing
1. Which of the following is not a method of irrigation?
A) Drip
B) Sprinkler
C) Ploughing
D) Furrow
✅ Answer: C) Ploughing
2. The process of separation of grain from chaff is called:
A) Winnowing
B) Threshing
C) Sowing
D) Weeding
✅ Answer: A) Winnowing
⚗️ Chapter 2: Microorganisms – Friend and Foe
3. Which microorganism is used in the production of alcohol?
A) Bacteria
B) Virus
C) Fungi
D) Algae
✅ Answer: C) Fungi (Yeast is a fungus used in fermentation)
4. Which disease is caused by a virus?
A) Tuberculosis
B) Cholera
C) Malaria
D) Polio
✅ Answer: D) Polio
3. Which microorganism is used in the production of alcohol?
A) Bacteria
B) Virus
C) Fungi
D) Algae
✅ Answer: C) Fungi (Yeast is a fungus used in fermentation)
4. Which disease is caused by a virus?
A) Tuberculosis
B) Cholera
C) Malaria
D) Polio
✅ Answer: D) Polio
⚙️ Chapter 4: Materials – Metals and Non-metals
5. Which of the following is a good conductor of electricity?
A) Wood
B) Plastic
C) Iron
D) Sulphur
✅ Answer: C) Iron
6. Which non-metal is essential for our life?
A) Nitrogen
B) Oxygen
C) Sulphur
D) Carbon
✅ Answer: B) Oxygen
5. Which of the following is a good conductor of electricity?
A) Wood
B) Plastic
C) Iron
D) Sulphur
✅ Answer: C) Iron
6. Which non-metal is essential for our life?
A) Nitrogen
B) Oxygen
C) Sulphur
D) Carbon
✅ Answer: B) Oxygen
🧬 Chapter 8: Cell – Structure and Functions
7. The control center of a cell is:
A) Nucleus
B) Cell wall
C) Cytoplasm
D) Chloroplast
✅ Answer: A) Nucleus
8. The smallest unit of life is:
A) Organ
B) Tissue
C) Cell
D) Organ system
✅ Answer: C) Cell
7. The control center of a cell is:
A) Nucleus
B) Cell wall
C) Cytoplasm
D) Chloroplast
✅ Answer: A) Nucleus
8. The smallest unit of life is:
A) Organ
B) Tissue
C) Cell
D) Organ system
✅ Answer: C) Cell
🌍 Chapter 18: Pollution of Air and Water
9. Which gas is mainly responsible for global warming?
A) Oxygen
B) Nitrogen
C) Carbon dioxide
D) Hydrogen
✅ Answer: C) Carbon dioxide
10. The substance that causes water pollution is called:
A) Oxygen
B) Pollutant
C) Solvent
D) Fertilizer
✅ Answer: B) Pollutant
9. Which gas is mainly responsible for global warming?
A) Oxygen
B) Nitrogen
C) Carbon dioxide
D) Hydrogen
✅ Answer: C) Carbon dioxide
10. The substance that causes water pollution is called:
A) Oxygen
B) Pollutant
C) Solvent
D) Fertilizer
✅ Answer: B) Pollutant
⚡ Chapter 14: Chemical Effects of Electric Current
11. Which liquid is a good conductor of electricity?
A) Distilled water
B) Lemon juice
C) Kerosene
D) Alcohol
✅ Answer: B) Lemon juice
12. The process of depositing a layer of metal using electricity is called:
A) Welding
B) Galvanization
C) Electroplating
D) Soldering
✅ Answer: C) Electroplating
11. Which liquid is a good conductor of electricity?
A) Distilled water
B) Lemon juice
C) Kerosene
D) Alcohol
✅ Answer: B) Lemon juice
12. The process of depositing a layer of metal using electricity is called:
A) Welding
B) Galvanization
C) Electroplating
D) Soldering
✅ Answer: C) Electroplating
✅ Why Use This MCQ Guide for Class 8 Science?
-
Aligned with NCERT Class 8 Science syllabus
-
Includes frequently asked questions in exams
-
Useful for quick revision and competitive exam preparation
-
Ideal for students, teachers, and tutors
-
Aligned with NCERT Class 8 Science syllabus
-
Includes frequently asked questions in exams
-
Useful for quick revision and competitive exam preparation
-
Ideal for students, teachers, and tutors
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Class 8 Science Most Repeated MCQs
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Class 8 Science Objective Questions
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Important Science MCQs for Class 8
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Multiple Choice Questions for Class 8 Science
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Class 8 Science Most Repeated MCQs
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Multiple Choice Questions for Class 8 Science
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Sure! Here's Part 2 of “Class 8 Science Most Repeated MCQs” – covering more important chapters with repeated and exam-relevant questions. These are also optimized for SEO and easy exam preparation.
Sure! Here's Part 2 of “Class 8 Science Most Repeated MCQs” – covering more important chapters with repeated and exam-relevant questions. These are also optimized for SEO and easy exam preparation.
🔥 Class 8 Science Most Repeated MCQs – Part 2
🌡️ Chapter 5: Coal and Petroleum
13. Which of the following is an exhaustible natural resource?
A) Air
B) Water
C) Coal
D) Sunlight
✅ Answer: C) Coal
14. Which fuel is known as a cleaner fuel?
A) Diesel
B) Petrol
C) LPG
D) Kerosene
✅ Answer: C) LPG
13. Which of the following is an exhaustible natural resource?
A) Air
B) Water
C) Coal
D) Sunlight
✅ Answer: C) Coal
14. Which fuel is known as a cleaner fuel?
A) Diesel
B) Petrol
C) LPG
D) Kerosene
✅ Answer: C) LPG
🌬️ Chapter 9: Reproduction in Animals
15. Animals that give birth to young ones are called:
A) Oviparous
B) Viviparous
C) Unisexual
D) Hermaphrodites
✅ Answer: B) Viviparous
16. The union of male and female gametes is called:
A) Fertilization
B) Germination
C) Cloning
D) Budding
✅ Answer: A) Fertilization
15. Animals that give birth to young ones are called:
A) Oviparous
B) Viviparous
C) Unisexual
D) Hermaphrodites
✅ Answer: B) Viviparous
16. The union of male and female gametes is called:
A) Fertilization
B) Germination
C) Cloning
D) Budding
✅ Answer: A) Fertilization
⚡ Chapter 12: Friction
17. Friction always acts in the:
A) Direction of motion
B) Opposite direction of motion
C) Downward direction
D) Upward direction
✅ Answer: B) Opposite direction of motion
18. Which surface has the least friction?
A) Rough surface
B) Wet floor
C) Oiled surface
D) Sandpaper
✅ Answer: C) Oiled surface
17. Friction always acts in the:
A) Direction of motion
B) Opposite direction of motion
C) Downward direction
D) Upward direction
✅ Answer: B) Opposite direction of motion
18. Which surface has the least friction?
A) Rough surface
B) Wet floor
C) Oiled surface
D) Sandpaper
✅ Answer: C) Oiled surface
🧲 Chapter 13: Sound
19. Sound is produced due to:
A) Light reflection
B) Vibration of objects
C) Water flow
D) Movement of air
✅ Answer: B) Vibration of objects
20. The unit of frequency is:
A) Newton
B) Pascal
C) Hertz
D) Joule
✅ Answer: C) Hertz
19. Sound is produced due to:
A) Light reflection
B) Vibration of objects
C) Water flow
D) Movement of air
✅ Answer: B) Vibration of objects
20. The unit of frequency is:
A) Newton
B) Pascal
C) Hertz
D) Joule
✅ Answer: C) Hertz
🌎 Chapter 10: Reaching the Age of Adolescence
21. The hormone responsible for changes in boys during puberty is:
A) Estrogen
B) Insulin
C) Testosterone
D) Adrenaline
✅ Answer: C) Testosterone
22. Adolescence begins around the age of:
A) 6 years
B) 8 years
C) 10 years
D) 12 years
✅ Answer: D) 12 years
21. The hormone responsible for changes in boys during puberty is:
A) Estrogen
B) Insulin
C) Testosterone
D) Adrenaline
✅ Answer: C) Testosterone
22. Adolescence begins around the age of:
A) 6 years
B) 8 years
C) 10 years
D) 12 years
✅ Answer: D) 12 years
🚀 Chapter 16: Light
23. The bouncing back of light from a surface is called:
A) Refraction
B) Reflection
C) Dispersion
D) Diffusion
✅ Answer: B) Reflection
24. Which type of mirror is used in vehicles as rear-view mirrors?
A) Plane mirror
B) Concave mirror
C) Convex mirror
D) None of these
✅ Answer: C) Convex mirror
23. The bouncing back of light from a surface is called:
A) Refraction
B) Reflection
C) Dispersion
D) Diffusion
✅ Answer: B) Reflection
24. Which type of mirror is used in vehicles as rear-view mirrors?
A) Plane mirror
B) Concave mirror
C) Convex mirror
D) None of these
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