JEE Mathematics Quadratic Equations MCQs

Refer to JEE Mathematics Quadratic Equations MCQs provided below available for download in Pdf. The MCQ Questions for Full Syllabus Mathematics with answers are aligned as per the latest syllabus and exam pattern suggested by JEE (Main), NCERT and KVS. Multiple Choice Questions for Quadratic Equations are an important part of exams for Full Syllabus Mathematics and if practiced properly can help you to improve your understanding and get higher marks. Refer to more Chapter-wise MCQs for JEE (Main) Full Syllabus Mathematics and also download more latest study material for all subjects

MCQ for Full Syllabus Mathematics Quadratic Equations

Full Syllabus Mathematics students should refer to the following multiple-choice questions with answers for Quadratic Equations in Full Syllabus.

Quadratic Equations MCQ Questions Full Syllabus Mathematics with Answers

 

 

Question: The roots of the quadratic equation 2x2 – 7x + 4 = 0 are -

  • a) Irrational and different
  • b) Rational and equal
  • c) Imaginary and different
  • d) Rational and different

Answer: Irrational and different

 

Question: The roots of the quadratic equation

x2 – 2 (a + b) x + 2 (a2 + b2) = 0 are -

  • a) Imaginary and different
  • b) Irrational and different
  • c) Rational and equal
  • d) Rational and different

Answer: Imaginary and different

 

Question: The roots of the equation x2 – 2 √2 x + 1 = 0 are –

  • a) Real and different
  • b) Real and equal
  • c) Imaginary and different
  • d) Rational and different

Answer: Real and different

 

Question: The roots of the equation x2 –3x – 4 = 0 are–

  • a) Opposite and greater root in magnitude is positive
  • b) Opposite and greater root in magnitude is negative
  • c) Reciprocal to each other
  • d) None of these

Answer: Opposite and greater root in magnitude is positive

 

Question: The roots of the equation 2x2 – 3x + 2 = 0 are -

  • a) Reciprocal to each other
  • b) Both roots are zero
  • c) None of these
  • d) Negative of each other

Answer: Reciprocal to each other

 

Question: If equation x2-bx/ax-c = k-1/k+1 has equal and opposite roots then the value of k is -

  • a) a-b/a+b
  • b) a-b/a-b
  • c) a+b/a-b
  • d) None of these

Answer: a-b/a+b

 

Question:

  • a) Rational and different
  • b) Imaginary and different
  • c) Real and equal
  • d) Real and different

Answer: Rational and different

 

Question: If the roots of the equation x2 + 2x + P = 0 are real then the value of P is -

  • a) P≤1
  • b) P≤2
  • c) P≤3
  • d) P≤4

Answer: P≤1

 

Question: If the product of the roots of the quadratic equation mx2 – 2x + (2m – 1) = 0 is 3 then the value of m is -

  • a) –1
  • b) 1
  • c) 2
  • d) 3

Answer: –1

 

Question:

  • a) 35
  • b) 45
  • c) 40
  • d) None of these

Answer: 35

 

Question: If the equation (k – 2)x2 – (k – 4) x – 2 = 0 has difference of roots as 3 then the value of k is-

  • a) 3,3/2
  • b) 3/2, 1
  • c) 1,3
  • d) 2, 3/2

Answer: 3,3/2

 

Question:

  • a) b2-2ac/a2c2
  • b) b2-2ac/ac
  • c) b2-2ac/ac2
  • d) None of these

Answer: b2-2ac/a2c2

 

Question: The roots of the equation x2 – 2x – 8 = 0 are -

  • a) 4, – 2
  • b) – 4,– 2
  • c) – 4, 2
  • d) 4, 2

Answer: 4, – 2

 

Question: The roots of the equation x2 – 4x + 1 = 0 are –

  • a) 2 ± √3
  • b) -2 ± 3
  • c) 2, 4
  • d) None of these

Answer: 2 ± √3

 

Question: The roots of the quadratic equation 7x2 – 9x + 2 = 0 are -

  • a) Rational and different
  • b) Irrational and different
  • c) Rational and equal
  • d) Imaginary and different

Answer: Rational and different

 

More Questions................................

 

Question: The equation whose roots are 3 and 4 will be-

  • a) x2 – 7x + 12 = 0
  • b) x2 + 7x – 12=0
  • c) x2 – x + 12 = 0
  • d) x2 + 7x + 12 = 0

Answer: x2 – 7x + 12 = 0

 

Question: The quadratic equation whose one root is 2 – i √3 is -

  • a) x2 – 4x + 7 = 0
  • b) x2 – 4x – 7=0
  • c) x2 + 4x – 7 = 0
  • d) None of these

Answer: x2 – 4x + 7 = 0

 

Question:

  • a) x2 – 4x + 4 = 0
  • b) x2 + 2x + 3 = 0
  • c) x2 + 4x + 1= 0
  • d) x2– 4x –1= 0

Answer: x2 – 4x + 4 = 0

 

Question:

  • a) Both
  • b) x2 – 11x + 30 = 0
  • c) (x – 3)2 – 5 (x – 3) + 6 = 0
  • d) None

Answer: Both

 

Question:

  • a) x2 – x – 2 = 0
  • b) x2 + x – 2 = 0
  • c) x2 + 2x – 8 = 0
  • d) None of these

Answer: x2 – x – 2 = 0

 

Question: If r and s are positive, then roots of the equation x2 – rx – s = 0 are -

(1) real                  (2) imaginary
(3) opposite signs (4) both negative

  • a) 1 and 3 are correct
  • b) 1 and 2 are correct
  • c) 1, 2 and 3 are correct
  • d) 2 and 4 are correct

Answer: 1 and 3 are correct

 

Question: If a < b < c < d, then roots of equation (x – a)(x – c) + 2 (x – b) (x – d) = 0 are

(1) real (2) unequal
(3) imaginary (4) equal

  • a) 1 and 2 are correct
  • b) 1 and 3 are correct
  • c) 1, 2 and 3 are correct
  • d) 2 and 4 are correct

Answer: 1 and 2 are correct

 

Question: If p and q are roots of the equation x2 – 2x + A = 0 and r and s be roots of the equation x2 – 18 x + B = 0 if p < q < r < s be in A.P., then choose the correct options –

  • a) 2 and 4 are correct
  • b) 1, 2 and 3 are correct
  • c) 1 and 2 are correct
  • d) 1 and 3 are correct

Answer: 2 and 4 are correct

 

Question:

  • a) Statement -1 is False, Statement-2 is True.
  • b) Statement -1 is True, Statement-2 is False.
  • c) Statement-1 is True, Statement-2 is True; Statement-2 is NOT a correct explanation for Statement-1.
  • d) Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1.

Answer: Statement -1 is False, Statement-2 is True.

 

Question: Let a, b, c be real such that ax2 + bx + c = 0 and x2 + x + 1= 0 have a common root

Statement–1 : a = b = c
Statement–2 : Two quadratic equations with real coefficients can not have only one imaginary root common.

  • a) Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1.
  • b) Statement-1 is True, Statement-2 is True; Statement-2 is NOT a correct explanation for Statement-1.
  • c) Statement -1 is False, Statement-2 is True.
  • d) Statement -1 is True, Statement-2 is False.

Answer: Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1.

 

Question:

Statement-1 : If one roots is √5 - √2 then the equation of lowest degree with rational coefficient is x4–14x2+ 9 = 0
Statement-2 : For a polynomial equation with rational coefficient irrational roots occurs in pairs.

  • a) Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1.
  • b) Statement-1 is True, Statement-2 is True; Statement-2 is NOT a correct explanation for Statement-1.
  • c) Statement -1 is False, Statement-2 is True.
  • d) Statement -1 is True, Statement-2 is False.

Answer: Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1.

 

Question: If f (x) is a quadratic expression which is positive for all real values of x and g(x) = f (x) + f '(x) + f "(x) , then for any real value of x-

  • a) g (x) > 0
  • b) g (x) < 0
  • c) g (x) = 0
  • d) None of these

Answer: g (x) > 0

 

Question: For real values of x, 2x2 + 5x – 3 > 0, if-

  • a) x > 1
  • b) x < – 2
  • c) x > 0
  • d) None of these

Answer: x > 1

 

Question: For what value of m the expression y2 + 4xy + 4x + my – 2 can be resolved into two rational factors-

  • a) –1
  • b) –2
  • c) 1
  • d) 2

Answer: –1

 

Question: The quadratic equation whose one root is 1/2 + √5 will be-

  • a) x2 + 4x – 1 = 0
  • b) x2 + 4x + 1= 0
  • c) x2 – 4x – 1 = 0
  • d) None of these

Answer: x2 + 4x – 1 = 0

 

Question:

  • a) c,a,b
  • b) a,b,c
  • c) b,c,a
  • d) None of these

Answer: c,a,b

 

Question: If the expression x2–11x + a and x2 – 14x + 2a must have a common factor and a ≠ 0, then, the common factor is –

  • a) (x – 8)
  • b) (x – 3)
  • c) (x – 6)
  • d) None of these

Answer: (x – 8)

 

Question: If x is real then the value of the expression x2+14x+9/ x2+2x+3 between –

  • a) –5 and 4
  • b) – 4 and 5
  • c) –3 and 3
  • d) – 4 and 4

Answer: –5 and 4

 

Question:

  • a) All these true
  • b) –3 < x < 3/2
  • c) x < –4
  • d) x > 5/2

Answer: All these true

 

Question: The real values of a for which the quadratic equation 2x2 – (a3 + 8a – 1) x + a2– 4a = 0 possesses roots of opposite signs are given by-

  • a) 0 < a < 4
  • b) a > 7
  • c) a > 5
  • d) a > 0

Answer: 0 < a < 4

 

Question: The value of the expression x2 + 2bx + c will be positive, if-

  • a) b2 < c
  • b) b2–4c < 0
  • c) b2–4c > 0
  • d) c2 < b

Answer: b2 < c

 

Question: If roots of the equation x2 + ax + 25 = 0 are in the ratio of 2 : 3 then the value of a is -

  • a) ±25/√6
  • b) ±5/√6
  • c) ±6/√6
  • d) None of these

Answer: ±25/√6

 

Question: If the roots of the equations x2 + 3x + 2 = 0 and x2 –x +λ=0 are in the same ratio then the value of λ is given by-

  • a) 2/9
  • b) 7/2
  • c) 2/7
  • d) 9/2

Answer: 2/9

 

Question:

  • a) a2/ p2
  • b) a2/ b2
  • c) c2/ r2
  • d) None of these

Answer: a2/ p2

 

Question:

  • a) b2 pr = q2 ac
  • b) p2 br = a2 qc
  • c) r2 pb = c2 ar
  • d) None of these

Answer: b2 pr = q2 ac

 

Question: The sum of all real roots of the equation |x – 2|2 + | x – 2 | – 2 = 0, is -

  • a) 4
  • b) 0
  • c) 8
  • d) None of these

Answer: 4

 

Question:

  • a) None of these
  • b)

  • c)

  • d)

Answer: None of these

 

Question: If p, q, r are in H.P. and p and r be different having same sign, then the root of the equation px2 + 2qx + r = 0 will be

  • a) Imaginary
  • b) Equal
  • c) Real
  • d) None of these

Answer: Imaginary

 

Question: If x = 2 + √3 then the value of x3 – 7x2 + 13 x – 12 is –

  • a) –9
  • b) 9
  • c) 6
  • d) 3

Answer: –9

 

Question: If every pair from among the equations x2 + px + qr = 0, x2 + qx + rp= 0 and x2 + rx + pq = 0 has a common root, then the sum of the three common roots is-

  • a) p + q + r
  • b) pqr
  • c) 2 (p + q+ r)
  • d) – (p + q + r)

Answer: p + q + r

 

Question: If the quadratic equations ax2 + 2cx + b = 0 and ax2 + 2bx + c = 0 (b≠c) have a common root, then a + 4b + 4c is equal to-

  • a) 0
  • b) –2
  • c) –1
  • d) 1

Answer: 0

 

Question: The value of m for which one of the roots of x2 – 3x + 2m = 0 is double of one of the roots of x2 – x + m = 0 is-

  • a) 0, 2
  • b) 2, –2
  • c) 0, –2
  • d) None of these

Answer: 0, 2

 

Question:

  • a) Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1.
  • b) Statement-1 is True, Statement-2 is True; Statement-2 is NOT a correct explanation for Statement-1.
  • c) Statement -1 is False, Statement-2 is True.
  • d) Statement -1 is True, Statement-2 is False.

Answer: Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1.

 

Question:

  • a) Statement -1 is False, Statement-2 is True.
  • b) Statement -1 is True, Statement-2 is False
  • c) Statement-1 is True, Statement-2 is True; Statement-2 is NOT a correct explanation for Statement-1.
  • d) Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1

Answer: Statement -1 is False, Statement-2 is True.

 

Question:

  • a) Statement -1 is True, Statement-2 is False.
  • b) Statement -1 is False, Statement-2 is True.
  • c) Statement-1 is True, Statement-2 is True; Statement-2 is NOT a correct explanation for Statement-1.
  • d) Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1.

Answer: Statement -1 is True, Statement-2 is False.

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