MCQ Practice – Class 6 to 10

Q1. A quadratic equation has how many turning points?

B. 3 C. 1 D. 2

Q2. Quadratic equation ax² + bx + c = 0 has real roots when:

A. None B. D ≤ 0 C. D ≥ 0 D. D < 0

Q3. Nature of roots of 4x² + 4x + 1 = 0 is:

A. Real unequal B. None C. Real equal D. Imaginary

Q4. Roots of x² + x – 6 = 0 are:

A. –3,–2 B. 2,–3 C. 3,2 D. 3,–2

Q5. The graph of y = ax² (a > 0) opens:

A. None B. Sideways C. Upwards D. Downwards

Q6. For quadratic ax² + bx + c = 0, a cannot be:

B. 1 C. –1 D. Any non-zero number

Q7. The roots of 3x² – 12 = 0 are:

A. 3,–3 B. 2,–2 C. 4,–4 D. 1,–1

Q8. If roots are 4 and 6, quadratic is:

A. x² – 24x + 10 = 0 B. x² – 4x + 6 = 0 C. x² + 10x + 24 = 0 D. x² – 10x + 24 = 0

Q9. The equation x² – x = 0 has roots:

A. 0,–1 B. 0,1 C. –1,1 D. 1,2

Q10. The discriminant (D) is:

A. b – 4ac B. b² – 4ac C. 4ac – b² D. a² – b²

Quiz – Quadratic Equations