Why These Class 10 Maths Important Questions Matter

Class 10 Maths is scoring but requires:

Clear steps
Proper formula usage
Strong conceptual base

These Class 10 Maths Important Questions cover algebra, geometry, trigonometry, and mensuration—ensuring complete preparation.

Class 7 Maths Science Questions, Class 8 Maths Science Questions, Class 9 Maths Important Questions, Class 10 Maths Important Questions

Physics Important Questions (Class 10)

1. Calculate current if 120 C charge flows in 2 minutes

Convert time: 2 min = 120 s
I = Q/t = 120/120 = 1 A

2. A resistor of 5 Ω has current 3 A. Find voltage

V = IR = 5×3 = 15 V

3. Define electric power and calculate if V = 10 V, I = 2 A

P = VI = 10×2 = 20 W

4. Explain difference between series and parallel circuits

Series → same current, higher resistance
Parallel → same voltage, lower resistance

5. What is magnetic field?

Region where magnetic force is experienced.

6. State Fleming’s Right Hand Rule

Used to find direction of induced current.

7. What is electromagnetic induction?

Production of current due to changing magnetic field.

8. Define resistance and its SI unit

Resistance opposes current, unit = Ohm.

9. What is electric motor?

Converts electrical energy into mechanical energy.

10. What is electric generator?

Converts mechanical energy into electrical energy.

Chemistry Important Questions (Class 10)

11. What is a chemical reaction?

Process forming new substances.

12. Balance: Zn + HCl → ZnCl₂ + H₂

Balanced: Zn + 2HCl → ZnCl₂ + H₂

13. Define oxidation and reduction

Oxidation = loss, reduction = gain of electrons.

14. What is pH?

Measure of acidity/basicity.

15. What are acids and bases?

Acids release H⁺, bases release OH⁻.

16. What is corrosion?

Damage of metals due to reaction.

17. What are hydrocarbons?

Compounds of carbon and hydrogen.

18. What is homologous series?

Same functional group compounds.

19. What is ethanol?

Alcohol used as fuel and solvent.

20. What is soap and detergent?

Cleaning agents.

Mathematics Important Questions (Class 10)

21. Solve quadratic equation: x² − 5x + 6 = 0

Factorize: (x − 2)(x − 3) = 0
x = 2, 3

22. Find roots using quadratic formula: x² − 4x + 3 = 0

x = [4 ± √(16 − 12)]/2 = [4 ± 2]/2
x = 3, 1

23. Prove: √5 is irrational

Assume √5 = p/q → leads to contradiction → hence irrational.

24. Find HCF using Euclid’s algorithm: 135, 225

225 = 135×1 + 90
135 = 90×1 + 45
90 = 45×2 + 0
HCF = 45

25. Find distance between (2,3) and (6,7)

Distance = √[(6−2)² + (7−3)²]
= √(16 + 16) = √32 = 4√2

26. Find area of circle (r = 7 cm)

Area = πr² = 22/7 × 49 = 154 cm²

27. Evaluate sin²θ + cos²θ

= 1 (identity)

28. Find surface area of sphere (r = 3 cm)

= 4πr² = 4×π×9 = 36π cm²

29. Find mean of data: 2, 4, 6, 8

Mean = (2+4+6+8)/4 = 5

30. Find probability of getting head in coin toss

= 1/2

Why These Class 10 Maths Important Questions Are Exam-Ready

These Class 10 Maths Important Questions include:

Quadratic equations
Geometry formulas
Trigonometric identities
Statistics & probability

They match real board exam patterns, making them highly effective.

Final Revision Strategy

Revise these Class 10 Maths Important Questions multiple times. Focus on stepwise solving, formulas, and accuracy. Practice writing clean and structured answers.

FAQ – Class 10 Maths Important Questions

Q1. Are these Class 10 Maths Important Questions enough?

Yes, they cover high-weightage topics.

Q2. Is stepwise solving important?

Yes, marks are given for steps.

Q3. Are these NCERT-based?

Yes, fully aligned.

Q4. How to score 90%+?

Practice + clarity.

Q5. Are these useful for boards?

Yes, fully exam-ready.

Top Important Questions for Class 10 (P.C.M.)