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## MCQ Questions for Class 11 Mathematics Chapter wise with Answers

## Q1. The curve represented by Im(z²) = k, where k is a non-zero real number, is

(i) a pair of striaght line

(ii) an ellipse

(iii) a parabola

(iv) a hyperbola

(iv) a hyperbola

## Q2. The value of √(-25) + 3√(-4) + 2√(-9) is

(i) 13 i

(ii) -13 i

(iii) 17 i

(iv) -17 i

(iii) 17 i

## Q3. The modulus of 1 + i√3 is

(i) 1

(ii) 2

(iii) 3

(iv) None of these

(ii) 2

## Q4. The value of √(-144) is

(i) 12i

(ii) -12i

(iii) ±12i

(iv) None of these

(i) 12i

## Q5. If | z + 4 | £ 3, then the maximum value of

| z + 1 | is

(i) 6

(ii) 0

(iii) 4

(iv) 10

(i) 6

## Q6. The modulus of √2i – – √2i is:

(i) 2

(ii) √2

(iii) 0

(iv) 2√2

(i) 2

## Q7. Let z be a complex number such that |z| = 4 and arg(z) = 5π/6, then z =

(i) -2√3 + 2i

(ii) 2√3 + 2i

(iii) 2√3 – 2i

(iv) -√3 + i

(i) -2√3 + 2i

## Q8. In z=4+i, what is the real part?

(i) 4

(ii) i

(iii) 1

(iv) 4+i

(i) 4

## Q9. The real part of the complex number √9 + √(-16) is

(i) 3

(ii) -3

(iii) 4

(iv) -4

(i) 3

## Q10. If the cube roots of unity are 1, ω and ω², then the value of (1 + ω / ω²)³ is

(i) 1

(ii) -1

(iii) ω

(iv) ω²

(ii) -1

## Q11. If (x + iy) (2 – 3i) = 4 + i, then

(i) x = – 14/13, y = 5/13

(ii) x = 5/13, y = 14/13

(iii) x = 14/13, y = 5/13

(iv) x = 5/13, y = – 14/13

(ii) x = 5/13, y = 14/13

## Q12. The value of √(-25) + 3√(-4) + 2√(-9) is

(i) 13i

(ii) -13i

(iii) 17i

(iv) -17i

(iii) 17i

## Q13. The least value of n for which {(1 + i)/(1 – i)}ⁿ is real, is

(i) 1

(ii) 2

(iii) 3

(iv) 4

(ii) 2

## Q14. 1 + i2 + i4 + i6 + … + i2n is

(i) positive

(ii) negative

(iii) 0

(iv) cannot be determined

(iv) cannot be determined

## Q15. Find real θ such that (3 + 2i × sin θ)/(1 – 2i × sin θ) is real

(i) π

(ii) nπ

(iii) nπ/2

(iv) 2nπ

(ii) nπ

We hope the given NCERT MCQ Questions for Class 11 Mathematics book Chapter 5 Complex Numbers and Quadratic Equations with Answers PDF Free Download solution will definitely help you to achieve perfect score. If you have any queries related to CBSE Class 11 Mathematics book Chapter 5 Complex Numbers and Quadratic Equations with Answers book MCQs Multiple Choice Questions with Answers, drop your questions below and will get back to you in no time.

## MCQ Questions for Class 11 Mathematics Chapter wise with Answers

- Chapter 1. Sets Class 11 MCQ Questions
- Chapter 2. Relations and Functions Class 11 MCQ Questions
- Chapter 3. Trigonometric Functions Class 11 MCQ Questions
- Chapter 4. Principle of Mathematical Induction Class 11 MCQ Questions
- Chapter 5. Complex Numbers and Quadratic Equations Class 11 MCQ Questions
- Chapter 6. Linear Inequalities Class 11 MCQ Questions
- Chapter . Permutations and Combinations Class 11 MCQ Questions
- Chapter 8. Binomial Theorem Class 11 MCQ Questions
- Chapter 9. Sequences and Series Class 11 MCQ Questions
- Chapter 10. Straight Lines Class 11 MCQ Questions
- Chapter 11. Conic Sections Class 11 MCQ Questions
- Chapter 12. Introduction to Three Dimensional Geometry Class 11 MCQ Questions
- Chapter 13. Limits and Derivatives Class 11 MCQ Questions
- Chapter 14. Mathematical Reasoning Class 11 MCQ Questions
- Chapter 15. Statistics Class 11 MCQ Questions
- Chapter 16. Probability Class 11 MCQ Questions