## MCQ Questions for Class 9 Maths Chapter 2 Polynomials with Answers

MCQs from Class 9 Maths Chapter 2 – Polynomials are provided here to help students prepare for their upcoming Maths exam.

MCQs from CBSE Class 9 Maths Chapter 2: Polynomials

**1) x ^{2}-2x+1 is a polynomial in:**

a. One Variable

b. Two Variables

c. Three variable

d. None of the above

**Answer/Explanation**

Answer: (a)

Explanation: x^{2}-2x+1 can be written as x^{2}-2x^{1}+1x^{0}. Hence, we can see that x is the only variable having powers as whole numbers: 2,1 and 0.

**2) The coefficient of x ^{2} in 3x^{3}+2x^{2}-x+1 is:**

a. 1

b. 2

c. 3

d. -1

**Answer/Explanation**

Answer: (b)

Explanation: The coefficient of x^{2} in equation 3x^{3}+2x^{2}-x+1 is the multiple of x^{2}.

**3) A binomial of degree 20 in the following is:**

a. 20x + 1

b. x/20 + 1

c. x^{20} +1

d. x^{2}+20

**Answer/Explanation**

Answer: (c)

Explanation: A polynomial having two terms and the highest degree 20 is called a binomial of degree 20.

**4) The degree of 4x ^{3}-12x^{2}+3x+9 is**

a. 0

b. 1

c. 2

d. 3

**Answer/Explanation**

Answer: (d)

Explanation: The degree is the highest power of a variable in an equation.

**5) x ^{2} – x is ________ polynomial.**

a. Linear

b. Quadratic

c. Cubic

d. None of the above

**Answer/Explanation**

Answer: (b)

Explanation: A polynomial of degree two is known as quadratic polynomial.

**6) x – x ^{3} is a ________ polynomial.**

a. Linear

b. Quadratic

c. Cubic

d. None of the above

**Answer/Explanation**

Answer: (c)

Explanation: A polynomial of degree three is known as cubic polynomial.

**7) 1+3x is a _________ polynomial.**

a. Linear

b. Quadratic

c. Cubic

d. None of the above

**Answer/Explanation**

Answer: (a)

Explanation: A polynomial of degree one is known as linear polynomial.

**8) The value of f(x) = 5x−4x ^{2}+3 when x = -1, is:**

a. 3

b. -12

c. -6

d. 6

**Answer/Explanation**

Answer: (c)

Explanation: When x= -1

f(x)=5x−4x^{2}+3

f(−1)=5(−1) −4(−1)^{2}+3

=−5–4+3

=−6

**9) The value of p(t) = 2+t+2t ^{2}−t^{3} when t=0 is**

a. 2

b. 1

c. 4

d. 0

**Answer/Explanation**

Answer: (a)

Explanation: p(0)=2+0+2(0)^{2}–(0)^{3}=2

**10) The zero of the polynomial f(x) = 2x+7 is**

a. 2/7

b. -2/7

c. 7/2

d. -7/2

**Answer/Explanation**

Answer: (d)

Explanation: f(x)=2x+7

⇒2x+7=0

⇒2x=−7

⇒x=−7/2

∴x = −7/2 is a zero polynomial of the polynomial f(x).

**11)** A polynomial with one degree is called:

a) Linear polynomial

b) Quadratic polynomial

c) Monomial

d) Binomial

**Answer**

(b)

**12)** Which one of the following is a polynomial?

**Answer**

(c)

**13)** √3 is a polynomial of degree:

a) 2

b) 0

c) 1

d) 1/2

**Answer**

(b)

**14)** Degree of the polynomial 7x^{5} + 8x^{2} – 5x + 3 is:

a) 1

b) 3

c) 2

d) 5

**Answer**

(d)

**15)** What is the degree of a zero polynomial?

a) 0

b) 1

c) Any natural number

d) Not defined

**Answer**

(d)

**16)** The value of the polynomial 7x^{4} + 3x^{2} – 4, when x = – 2 is:

a) 100

b) 110

c) 120

d) 130

**Answer**

(c)

**17) **The zero of the polynomial p(x) = -9x + 9is:

a) 0

b) -9

c) -1

d) 1

**Answer**

(d)

**18)** √12 X √15 is equal to:

a) 5√6

b) 6√5

c) 10√5

d) √25

**Answer**

(b)

**19)** If y^{97} + 97 is divided by y + 1, the remainder is:

a) 0

b) 1

c) 95

d) 96

**Answer**

(d)

**20)** If x + 1 is a factor of the polynomial 2x^{2} + kx, then the value of k is:

a) -3

b) 4

c) 2

d) -2

**Answer**

(c)

**21)** The value of 99^{2} – 98^{2} is:

a) 1

b) 197

c) 187

d) 207

**Answer**

(b)

**22)** One of the factors of (1 + 7x)^{2} + (49x^{2} – 1) is:

a) x – 7

b) 7 – x

c) 7x – 1

d) 14x

**Answer**

(d)

**23)** The factorization of 6x^{2} + 11x + 3 is:

a) (3x + 1) (2x + 3)

b) (x + 1) (2x + 3)

c) (x + 3) (2x + 1)

d) (3x + 3) (x + 1)

**Answer**

(a)

**24)**

a) 1

b) –1

c) 0

d) 1/2

**Answer**

(c)

**25)**

a) 0

b) 1/4

c) 1/2

d) 1/√2

**Answer**

(b)