100 Science Knowledge Questions and Answers for Students and Quiz Lovers

Science is one of the most fascinating subjects in the world. From the mysteries of space to the wonders of the human body, science helps us understand how everything works. Whether you are a student preparing for exams, a teacher looking for quiz material, or just someone who loves learning new things, these 100 Science Knowledge Questions and Answers will be perfect for you.

This article covers questions from physics, chemistry, biology, space, environment, inventions, and everyday science. The goal is to make science fun, easy, and engaging for readers of all ages.

Why Science Quizzes Are Important

Science quizzes are not just for classrooms; they are also a great way to improve general knowledge and logical thinking. Here’s why practicing science questions is useful:

✅ Boosts memory power – Regular quiz practice helps retain facts longer.

✅ Enhances problem-solving skills – Science improves reasoning and analytical thinking.

✅ Makes learning fun – Questions and answers are more engaging than long textbooks.

✅ Useful for competitive exams – Many entrance tests and job exams include science questions.

✅ Global relevance – Science is universal, and these questions are helpful for learners worldwide.

Categories of the 100 Science Knowledge Questions

To make it easier, we have divided the 100 Science Knowledge Questions and Answers into different sections:

1. Physics Questions – Energy, motion, light, electricity
2. Chemistry Questions – Elements, compounds, reactions
3. Biology Questions – Human body, plants, animals
4. Space and Astronomy Questions – Universe, planets, stars
5. Environmental Science Questions – Nature, ecology, global warming
6. Inventions and Discoveries – Scientists, innovators, milestones

Sample Science Knowledge Questions and Answers

Here are some example questions to give you a taste of what’s included in the full set of 100:

Physics

Q1. What is the speed of light?
A) 300,000 km/s ✅

Q2. Who is known as the father of modern physics?
A) Albert Einstein ✅

Chemistry

Q3. What is the chemical symbol of Gold?
A) Au ✅

Q4. Which gas do humans exhale during respiration?
A) Carbon dioxide ✅

Biology

Q5. Which is the largest organ in the human body?
A) Skin ✅

Q6. What is the powerhouse of the cell?
A) Mitochondria ✅

Space and Astronomy

Q7. Which planet is known as the Red Planet?
A) Mars ✅

Q8. What is the name of our galaxy?
A) The Milky Way ✅

Environment

Q9. What is the main gas responsible for global warming?
A) Carbon dioxide ✅

Q10. Which renewable source of energy is produced from sunlight?
A) Solar energy ✅

Benefits of Practicing 100 Science Knowledge Questions

Practicing a large set of questions such as these 100 Science Knowledge Questions and Answers provides many benefits:

📘 Helps students in exams – Many school and college exams include basic science questions.

🌍 Prepares you for global quizzes – Knowledge is useful for both national and international competitions.

💡 Sharpens your mind – Regular practice makes you quicker at problem-solving.

🎯 Covers multiple fields – Physics, chemistry, biology, and more in one place.

🧑‍🏫 Useful for teachers and trainers – Ready-made quiz material for classrooms or online learning.

Tips for Using Science Questions Effectively

1. Daily Practice – Try answering 10–15 questions every day to stay sharp.
2. Group Study – Use these questions in group discussions and quiz competitions.
3. Online Learning – Share them on social media or quiz apps for fun learning sessions.
4. Revision Tool – Keep revisiting the questions before exams.
5. Educational Games – Parents can use these questions to make science fun for kids.

Science Knowledge in Everyday Life

Science is not only in textbooks—it’s around us every day. From the electricity that powers your home, to the medicines that keep you healthy, and the technology that connects you online—science is everywhere. By practicing these 100 Science Knowledge Questions, you also understand the world better.

Final Words

If you want to boost your knowledge, prepare for competitive exams, or just challenge your brain, these 100 Science Knowledge Questions and Answers are perfect for you. Science is the key to progress, and the more we learn, the more we grow.

So, whether you are a student, a teacher, or just curious about the world, start exploring these questions today. Keep learning, keep discovering, and let science open new doors of opportunity in your life.