# MCQ Questions for Class 10 Maths Chapter 4 Quadratic Equations with Answers

Students are advised to solve the Quadratic Equations Multiple Choice Questions of Class 10 Maths to know different concepts. Practicing the MCQ Questions on Quadratic Equations Class 10 with answers will boost your confidence thereby helping you score well in the exam.

Explore numerous MCQ Questions of Quadratic Equations Class 10 with answers provided with detailed solutions by looking below.

Question 1.
One year ago, a man was 8 times as old as his son. Now his age is equal to the square of his son’s age. Their present ages are
(a) 7 years, 49 years
(b) 5 years, 25 years
(c) 1 years, 50 years
(d) 6 years, 49 years

Answer: (a) 7 years, 49 years

Question 2.
If -5 is a root of the quadratic equation 2x2 + px – 15 = 0, then
(a) p = 3
(b) p = 5
(c) p = 7
(d) p = 1

Question 3.
The two consecutive odd positive integers, sum of whose squares is 290 are
(a) 13, 15
(b) 11, 13
(c) 7, 9
(d) 5, 7

Question 4.
The value of b2 – 4ac for equation 3x2 – 7x – 2 = 0 is
(a) 49
(b) 0
(c) 25
(d) 73

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Question 5.
Value(s) of k for which the quadratic equation 2x2 -kx + k = 0 has equal roots is
(a) 0
(b) 4
(c) 8
(d) 0 and 8

Question 6.
Find the two consecutive odd positive integers, sum of whose square is 290
(a) 15, 17
(b) 9, 11
(c) 13, 15
(d) 11, 13

Question 7.
Which of the following are the roots of the quadratic equation, x2 – 9x + 20 = 0 by factorisation?
(a) 3,4
(b) 4, 5
(c) 5, 6
(d) 6, 7

Question 8.
Reduction of a rupee in the price of onion makes the possibility of buying one more kg of onion for Rs.56. Find the original price of the onion per kg?
(a) 7
(b) 1
(c) 7, -8
(d) 8

Question 9.
The equation (x – 2)2 + 1 = 2x – 3 is a
(a) linear equation
(c) cubic equation

Question 10.
Two candidates attempt to solve a quadratic equation of the form x2 + px + q = 0. One starts with a wrong value of p and finds the roots to be 2 and 6. The other starts with a wrong value of q and finds the roots to be 2 and – 9. Find the correct roots of the equation :
(a) 3, 4
(b) – 3, – 4
(c) 3, – 4
(d) – 3, 4

Answer: (b) – 3, – 4

Question 11.
(a) 0
(b) 1
(c) 2
(d) 3

Question 12.
The polynomial equation x (x + 1) + 8 = (x + 2) (x – 2) is
(a) linear equation
(c) cubic equation

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Question 13.
If (x – a) is one of the factors of the polynomial ax2 + bx + c, then one of the roots of ax2 + bx + c = 0 is
(a) 1
(b) c
(c) a
(d) none of these

Question 14.
The equation x2 – px + q = 0 p, q e R has no real roots if :
(a) p2 > 4q
(b) p2 < 4q
(c) p2 = 4q
(d) None of these

Question 15.
The roots of the equation (b – c) x2 + (c – a) x + (a – b) = 0 are equal, then
(a) 2a = b + c
(b) 2c = a + b
(c) b = a + c
(d) 2b = a + c

Answer: (d) 2b = a + c

Question 16.
If the roots of px2 + qx + 2 = 0 are reciprocal of each other, then
(a) P = 0
(b) p = -2
(c) p = ±2
(d) p = 2

Question 17.
If a, p are the roots of the equation (x – a) (x – b) + c = 0, then the roots of the equation (x – a) (x – P) = c are
(a) a, b
(b) a, c
(c) b, c
(d) none of these

Question 18.
The sum of the roots of the quadratic equation 3x2 – 9x + 5 = 0 is
(a) 3
(b) 6
(c) -3
(d) 2

Question 19.
The cubic equation has degree
(a) 1
(b) 2
(c) 3
(d) 4

Question 20.
The equation 2x2 + kx + 3 = 0 has two equal roots, then the value of k is
(a) ±√6
(b) ± 4
(c) ±3√2
(d) ±2√6

Question 21.
The quadratic equation whose one rational root is 3 + v2 is
(a) x2 – 7x + 5 = 0
(b) x2 + 7x + 6 = 0
(c) x2 – 7x + 6 = 0
(d) x2 – 6x + 7 = 0

Answer: (d) x2 – 6x + 7 = 0

Question 22.
(a) 1
(b) 2
(c) 3
(d) 4

Question 23.
If 7th and 13th term of an A.P. are 34 and 64 respectively, then its 18th term is
(a) 87
(b) 88
(c) 89
(d) 90

Question 24.
The quadratic equation 2x2 – 3x + 5 = 0 has?
(a) Real and distinct roots
(b) Real and equal roots
(c) Imaginary roots
(d) All of the above