CBSE Class 10 Quadratic Equations MCQs – Standard Form and Factorization Method
CBSE Class 10 Mathematics – Quadratic Equations MCQs
Chapter 4: Quadratic Equations
Topic: Standard Form and Factorization Method
Based on NCERT | As per Latest CBSE Board Examination Pattern
1. The standard form of a quadratic equation is:
Correct Answer: B
Explanation: A quadratic equation is written in standard form as ax² + bx + c = 0 where a ≠ 0.
Explanation: A quadratic equation is written in standard form as ax² + bx + c = 0 where a ≠ 0.
2. Which of the following is a quadratic equation?
Correct Answer: B
Explanation: Highest power of x is 2, so it is quadratic.
Explanation: Highest power of x is 2, so it is quadratic.
3. The value of 'a' in 3x² − 5x + 2 = 0 is:
Correct Answer: C
Explanation: Comparing with ax² + bx + c = 0, a = 3.
Explanation: Comparing with ax² + bx + c = 0, a = 3.
4. To solve by factorization, we first:
Correct Answer: B
Explanation: For factorization, equation must be written in standard form ax² + bx + c = 0.
Explanation: For factorization, equation must be written in standard form ax² + bx + c = 0.
5. Solve: x² − 5x + 6 = 0. Roots are:
Correct Answer: A
Explanation: x² − 5x + 6 = (x − 2)(x − 3) = 0 ⇒ x = 2, 3.
Explanation: x² − 5x + 6 = (x − 2)(x − 3) = 0 ⇒ x = 2, 3.
6. If product of two numbers is 6 and sum is −5, numbers are:
Correct Answer: A
Explanation: (−2) + (−3) = −5 and (−2)(−3) = 6.
Explanation: (−2) + (−3) = −5 and (−2)(−3) = 6.
7. Solve: x² − 9 = 0. Roots are:
Correct Answer: C
Explanation: x² = 9 ⇒ x = ±3.
Explanation: x² = 9 ⇒ x = ±3.
8. Which equation can be solved directly by splitting middle term?
Correct Answer: B
Explanation: 5x can be split as 2x + 3x.
Explanation: 5x can be split as 2x + 3x.
9. Solve: 2x² − 7x + 3 = 0. Roots are:
Correct Answer: A
Explanation: 2x² − 7x + 3 = (2x − 1)(x − 3) = 0 ⇒ x = 1/2, 3.
Explanation: 2x² − 7x + 3 = (2x − 1)(x − 3) = 0 ⇒ x = 1/2, 3.
10. A quadratic equation always has:
Correct Answer: C
Explanation: A quadratic equation can have at most two real roots.
Explanation: A quadratic equation can have at most two real roots.
11. If x² + 2x = 0, roots are:
Correct Answer: A
Explanation: x(x + 2) = 0 ⇒ x = 0, −2.
Explanation: x(x + 2) = 0 ⇒ x = 0, −2.
12. In quadratic equation, 'b' is coefficient of:
Correct Answer: B
Explanation: In ax² + bx + c = 0, b is coefficient of x.
Explanation: In ax² + bx + c = 0, b is coefficient of x.
13. If quadratic equation has equal roots, factors are:
Correct Answer: B
Explanation: Equal roots mean repeated factor.
Explanation: Equal roots mean repeated factor.
14. If equation is not in standard form, we:
Correct Answer: B
Explanation: Move all terms to one side to get ax² + bx + c = 0.
Explanation: Move all terms to one side to get ax² + bx + c = 0.
15. Solve: x² − 4x = 0. Roots are:
Correct Answer: A
Explanation: x(x − 4) = 0 ⇒ x = 0, 4.
Explanation: x(x − 4) = 0 ⇒ x = 0, 4.
16. If product of roots is negative, roots are:
Correct Answer: C
Explanation: Product negative means one positive and one negative.
Explanation: Product negative means one positive and one negative.
17. Solve: x² − 1 = 0. Roots are:
Correct Answer: C
Explanation: x² = 1 ⇒ x = ±1.
Explanation: x² = 1 ⇒ x = ±1.
18. Quadratic equation has degree:
Correct Answer: B
Explanation: Highest power of variable is 2.
Explanation: Highest power of variable is 2.
19. If both roots are positive, sum is:
Correct Answer: A
Explanation: Sum of two positive numbers is positive.
Explanation: Sum of two positive numbers is positive.
20. Factorization method works best when:
Correct Answer: A
Explanation: When middle term can be split easily, factorization is fastest.
Explanation: When middle term can be split easily, factorization is fastest.
