If you are preparing seriously for exams, these Class 8 Maths Science Questions will help you build strong concepts and improve problem-solving skills. This article covers exam-focused, NCERT-based questions from Physics, Chemistry, and Mathematics, with clear explanations to help you understand each concept deeply.
These Class 8 Maths Science Questions are designed not just for revision, but for mastering the logic behind every topic. Regular practice of these Class 8 Maths Science Questions will improve your accuracy, speed, and confidence in exams.
Why These Class 8 Maths Science Questions Matter
Class 8 is where concepts become more analytical, especially in Mathematics. These Class 8 Maths Science Questions focus on conceptual clarity and application-based learning, which is essential for higher classes.
Physics Important Questions (Class 8)
1. What is force and what are its effects?
Force is a push or pull that can change the shape, direction, or speed of an object. For example, pushing a box moves it, and squeezing a sponge changes its shape.
2. What are contact and non-contact forces?
Contact forces require physical contact (like friction), while non-contact forces act without touching (like gravity and magnetic force).
3. What is pressure?
Pressure is defined as force per unit area. If the same force is applied on a smaller area, pressure increases.
4. What is friction and how can it be reduced?
Friction opposes motion. It can be reduced by lubrication, polishing surfaces, or using rollers.
5. What is sound and how does it travel?
Sound is produced by vibrations and travels through a medium like air, liquids, or solids.
6. What is reflection of light?
Reflection is the bouncing back of light from a surface, allowing us to see objects.
7. What is refraction?
Refraction is the bending of light when it passes from one medium to another.
8. What is electric current?
Electric current is the flow of electric charge through a conductor.
9. What are conductors and insulators?
Conductors allow current to pass through, while insulators do not.
10. What is energy and its forms?
Energy is the ability to do work and exists in forms like heat, light, and electrical energy.
Chemistry Important Questions (Class 8)
11. What is matter?
Matter is anything that has mass and occupies space.
12. What are metals and non-metals?
Metals are shiny and good conductors, while non-metals are dull and poor conductors.
13. What is a physical change?
A change where no new substance is formed, like melting ice.
14. What is a chemical change?
A change where a new substance is formed, like burning wood.
15. What is combustion?
Combustion is the process of burning in oxygen, producing heat and light.
16. What are fuels?
Fuels are substances that produce energy when burned.
17. What is pollution?
Pollution is contamination of the environment.
18. What is corrosion?
Corrosion is the gradual damage of metals due to chemical reactions.
19. What is conservation?
Conservation means using resources wisely.
20. What are synthetic fibres?
Synthetic fibres are man-made fibres like nylon and polyester.
Mathematics Important Questions (Class 8)
21. Solve: 2x + 5 = 15
To solve the equation, subtract 5 from both sides:
2x = 10
Now divide both sides by 2:
x = 5
So, the value of x is 5.
22. Find the value of x: 3x – 7 = 11
Add 7 to both sides:
3x = 18
Divide by 3:
x = 6
This shows how we isolate the variable step by step.
23. What is a rational number? Give examples.
A rational number is any number that can be written in the form p/q where q ≠ 0. Examples include 1/2, -3/4, and 5.
24. Simplify: (2x + 3x)
Combine like terms:
2x + 3x = 5x
This is a basic algebraic simplification.
25. Find the perimeter of a rectangle with length 10 cm and width 5 cm
Perimeter = 2 × (length + width)
= 2 × (10 + 5) = 30 cm
Perimeter is the total boundary length.
26. Find the area of a rectangle with length 8 cm and width 4 cm
Area = length × width
= 8 × 4 = 32 cm²
Area measures the space inside a shape.
27. Solve: 5(x + 2) = 20
Divide both sides by 5:
x + 2 = 4
Subtract 2:
x = 2
This uses the distributive property.
28. What is the sum of interior angles of a triangle?
The sum of interior angles of any triangle is always 180°. This is a fundamental geometry rule.
29. Find the value of 3² + 4²
3² = 9 and 4² = 16
So, 9 + 16 = 25
This involves basic exponent rules.
30. Find the value of x: 4x + 3 = 19
First, subtract 3 from both sides:
4x = 19 − 3
4x = 16
Now divide both sides by 4:
x = 16 ÷ 4
x = 4
So, the value of x is 4.
How to Use These Class 8 Maths Science Questions
To get the best results, practice these Class 8 Maths Science Questions regularly. Focus on understanding each step, especially in Maths. Try solving problems on your own before checking answers.
Final Revision Strategy
Revise these Class 8 Maths Science Questions multiple times before exams. Focus more on weak areas and practice writing full answers. This will help you improve speed and accuracy.
FAQ – Class 8 Maths Science Questions
Q1. Are these Class 8 Maths Science Questions enough for exams?
Yes, they cover the most important exam-focused concepts.
Q2. Are these based on NCERT?
Yes, all questions follow NCERT syllabus.
Q3. How to improve Maths using these questions?
Practice regularly and understand each step clearly.
Q4. Are solutions provided for Maths?
Yes, step-by-step explanations are included.
Q5. Can these help in higher classes?
Yes, they build a strong foundation for Class 9 and 10.