Quadratic Equations MCQ Questions Class 10 Math Book – Chapter 4
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Chapter 4
Quadratic equations
Multiple Choice questions:
1) The quadratic polynomial of the form ax2 + bx + c = 0, is called as
a) Linear equation
b) Quadratic equation
c) Both a and b
d) None
Ans: b) quadratic equation
2) Which of the following is the quadratic equation
a) 9-2x +X2= 0
b) X2=0
c) 4x – X2=0
d) All
Ans: d) all
3) (X –3)2 + 2 = 0 is the quadratic equation or not.
a)It is not the quadratic equation
b) It is the quadratic equation
c) Both a and b
d) None
Ans: b) it is the quadratic equation
4) X(X+1)2 + 2 = 0 is the quadratic equation or not.
a) It is the quadratic equation
b) It is not the quadratic equation
c) Both a and b
d) None
Ans: b) it is not the quadratic equation
5) The roots of the quadratic equation and zeroes of the quadratic polynomial both are
a) Different
b) Same
c) Both a and b
d) None
Ans: b) same
6) The solution of the quadratic equation 2×2 – 5x +3=0 is
a) X= 3/2, 1
b) X= 2/3, 1
c) X= 3/2, 2
d) X= 2/3, 2
Ans: a) X= 3/2, 1
7) The roots of the quadratic equation 6×2 – X -2=0 are
a) X= 2/3, ½
b) X= 2/3, -1/2
c) X= 2/3, -2
d) X= 2/3, 2
Ans: b) X= 2/3, -1/2
8) The quadratic equation has
a) Two roots
b) Only one root
c) Three roots
d) No roots
Ans: a) two roots
- In case you have missed:- Previous Chapter MCQ Questions
9) The roots of the quadratic equation
a) Does not satisfy that quadratic equation
b) Satisfy that quadratic equation
c) Both a and b
d) None
Ans: b) satisfy that quadratic equation
9) The roots of the quadratic equation ax2 + bx + c= 0 are calculated by
A) X= (-b + √b2 – 4ac)/ 2a
b\) X= (-b – √b2 – 4ac)/ 2a
C) X= = (-b + √b2 – 4ac)/ a
D) None
Ans: a) X= (-b + √b2 – 4ac)/ 2a
10) For quadratic equation ax2 + bx + c = 0, ∆= b2 – 4ac is called as
a) Indiscriminant
b) Discriminant
c) Both a and b
d) None
Ans: b) discriminant
11) If ∆> 0 then roots are
A) Real and equal
B) Real and unequal
C) Imaginary
d) None
Ans: b) real and unequal
12) If ∆< 0 then roots are
A) Real
b) Not real
c) Equal
d) None
Ans: b) not real
13) If ∆ = 0 then roots are
A) Real and equal
b) Real
c) Not real
d) None
Ans: a) real and equal
14) If A and B are the roots of the quadratic equation ax2 + bx + c= 0 then
A) A + B = b/a
B) A – B = – b/ a
C) A + B = -b/a
D) A + B = a/ b
Ans: c) A + B = -b/a
15) If A and B are the two roots of the quadratic equation ax2 + bx + c = 0, then
a) AB = c/ a
b) AB = a/c
c) AB = -c/a
d) AB = – a/ c
Ans: a) AB = c/ a
16) If A and B are the two roots of the quadratic equation then that equation is
A) X2 – (A + B)X + AB = 0
B) X2 – (A – B)X + AB =0
c) X2 – (A – B)X – AB = 0
d) X2 +( A + B)X + AB = 0
Ans: a) X2 – (A + B)X + AB = 0
- In case you have missed:- Next Chapter MCQ Questions
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