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Class 11 Mathematics Chapter 5 Complex Numbers And Quadratic Equations Quiz 3 (25 MCQs)

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1. What is the additive inverse of the complex number z = 4 + 5i?
2. $\left(3-4i\right)\left(5+6i\right)$
3. Find the sum.(5-2i) + (-7+8i)
4. Which of the following is equivalent to i$^{4}$?
5. Let z = 3 + 4i and w =-1 + 2i. What is z + w in standard form?
6. Let $w=-\frac{\sqrt{3}}{2}+\frac{1}{2}i$
7. If z =-6-2i, which expression equals its conjugate?
8. The multiplicative inverse of $-i$
9. What is the additive identity for complex numbers?
10. The value of 1 + i$^{2}$ + i$^{4}$ + i$^{6}$ + ..... + i$^{2n}$ is
11. Which of these describes the solution(s) to $150x^2 + x = 0$
12. What is the discriminant $\left(b^2-4ac\right)$ $-3x^2 + 5x-11 = 0$
13. Factor3v$^{2}$-4v-7
14. What is the standard form for a complex number?
15. Which of the following is true about the multiplication of complex numbers?
16. What is the result of (1 + 2i)(1 + 2i)?
17. (-4i)(3i)(4i)
18. Which of the following is a property of the addition of complex numbers?
19. What is the complex conjugate of 4-3i?
20. If a complex number z lies in the interior or on the boundary of a circle of radius 3 units and centre (-4, 0), the greatest value of |z +1| is
21. Which law states that the sum of two complex numbers is also a complex number?
22. Which statement about complex conjugates is true?
23. What is the imaginary part of the complex number z = 5-4i?
24. (3+8i)(-2-i)
25. What is the modulus of the complex number z = 3 + 4i?
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