Check the important MCQ questions with answers from Class 10 Maths Chapter 2 - Polynomials. PDF of all questions is also provided for download.
Get here MCQs on Class 10 Maths Chapter 2- Polynomials. All these questions are provided withanswers and detailed solutions. Students can also download all the solved MCQs in PDF format so that they may practice with these questions in offline mode as well. Allthese questions are quite important for the upcoming CBSE Class 10 Maths Board Exam 2020.
Check below the solved MCQs from Class 10 Maths Chapter 2 Polynomials:
1. The zeroes of the quadratic polynomial x2 + 99x + 127are
(A) both positive
(B) both negative
(C) one positive and one negative
(D) both equal
Answer: (B)
2. If the zeroes of the quadratic polynomial x2 + bx + c , c ≠ 0are equal, then
(A) c and a have opposite signs
(B) c and b have opposite signs
(C) c and a have the same sign
(D) c and b have the same sign
Answer: (C)
CBSE Class 10 Science Important MCQs from All Chapters for Board Exam 2020
3. The number of polynomials having zeroes as –2 and 5 is
(A) 1
(B) 2
(C) 3
(D) more than 3
Answer: (D)
4. The degree of the polynomial (x + 1)(x2 – x – x4 +1) is:
(A)2
(B) 3
(C) 4
(D) 5
Answer: (D)
Explanation: Since the highest degree variable in first bracket is x and in second bracket is x4 on multiplying x with x4.the highest power we obtain is 5.
5. If the zeroes of the quadratic polynomial x2 + (a + 1)x + b are 2 and –3, then
(A) a = –7, b = –1
(B) a = 5, b = –1
(C) a = 2, b = – 6
(D) a = 0, b = – 6
Answer: (D)
NCERT Exemplar Problems and Solutions for Class 10 Maths
6. Given that one of the zeroes of the cubic polynomial ax3 + bx2 + cx + d is zero, the product of the other two zeroes is
(A) –c/a
(B) c/a
(C) 0
(D) 3
Answer: (B)
7. If one of the zeroes of the cubic polynomial x3 + ax2 + bx + c is –1, then the
Product of the other two zeroes is
(A) b – a + 1
(B) b – a – 1
(C) a – b + 1
(D) a – b –1
Answer: (A)
8. If one of the zeroes of the quadratic polynomial (k – 1)x2 + kx + 1 is –3, then the value of k is
(A) 4/3
(B) – 4/3
(C) 2/3
(D) – 2/3
Answer: (A)
NCERT Solutions for Class 10 Maths
10. The value of p for which the polynomial x3 + 4x2 –px + 8 is exactly divisible by (x – 2) is:
(A) 0
(B) 3
(C) 5
(D) 16
Answer: (D)
11. If sum of the squares of zeroes of the quadratic polynomial 6x2 + x + k is 25/36, the value of k is:
(A) 4
(B) – 4
(C) 2
(D) – 2
Answer: (D)
NCERT Exemplar Problems and Solutions for Class 10 Science
12. If α and β are zeroes of x2 – 4x + 1, then 1/α + 1/β – αβ is
(A) 3
(B) 5
(C) –5
(D) –3
Answer: (A)
13. If (x + 1) is a factor of x2− 3ax +3a − 7, then the value of a is:
(A) 1
(B) –1
(C) 0
(D) –2
Answer: (A)
14. If one of the zeroes of a quadratic polynomial of the form x2 + ax + b is the negative of the other, then it
(A) has no linear term and the constant term is negative.
(B) has no linear term and the constant term is positive.
(C) can have a linear term but the constant term is negative.
(D) can have a linear term but the constant term is positive
Answer: (A)
15. If α, β are zeroes of x2 –6x + k, what is the value of k if 3α + 2β = 20?
(A)–16
(B) 8
(C) 2
(D) –8
Answer: (A)
