#### Algebra - One Mark Questions

9th Standard

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Maths

Time : 00:30:00 Hrs
Total Marks : 15
10 x 1 = 10
1. The root of the polynomial equation 2x + 3 = 0 is

(a)

$\frac{1}{3}$

(b)

$-\frac{1}{3}$

(c)

$-\frac{3}{2}$

(d)

$-\frac{2}{3}$

2. The sum of the polynomials p(x) = x3 – x2 – 2, q(x) = x2–3x+ 1

(a)

x3 – 3x – 1

(b)

x3 + 2x2 – 1

(c)

x3 – 2x2 – 3x

(d)

x3 – 2x2 + 3x –1

3. The product of the polynomials p(x) = 4x –3 q(x) = 4x + 3

(a)

1 – x – 8

(b)

16x2 – 9

(c)

18x3 + 12x2 – 12x – 8

(d)

18x3 – 12x2 + 12x + 8

4. The remainder when p(x) = x3 – ax2 + 6x – a is divided by (x – a) is

(a)

–5a

(b)

$\frac {1}{5}$

(c)

5

(d)

5a

5. Degree of the polynomial (y3–2)(y3 + 1) is

(a)

9

(b)

2

(c)

3

(d)

6

6. Which of the following is a monomial?

(a)

${ 4x }^{ 2 }$

(b)

$a+b$

(c)

$a+b+c$

(d)

$a+b+c+d$

7. Which of the following is trinomial?

(a)

-7z

(b)

${ z }^{ 2 }-{ 4y }^{ 2 }$

(c)

${ x }^{ 2 }y-{ xy }^{ 2 }+y$

(d)

$12a=9ab+5b-3$

8. The sum of ${ 5x }^{ 2 };-7x^{ 2 };8x^{ 2 };11x^{ 2 }\quad and\quad -9x^{ 2 }$ is _________________________

(a)

$2{ x }^{ 2 }$

(b)

$4{ x }^{ 2 }$

(c)

$6{ x }^{ 2 }$

(d)

$8{ x }^{ 2 }$

9. The area of a rectangle with length $2l^{ 2 }m$ and breadth $3l^{ 2 }m$ is_______________________

(a)

$6l^{ 3 }m^{ 3 }$

(b)

$l^{ 3 }m^{ 3 }$

(c)

$2l^{ 3 }m$

(d)

$4l^{ 3 }m^{ 3 }$

10. The coefficient of ${ x }^{ 2 }\quad and\quad x\quad in\quad 2{ x }^{ 3 }-5{ x }^{ 2 }+6x-3\quad are\quad respectively$____________________

(a)

2, -5

(b)

2, 6

(c)

-5, 6

(d)

-5, -3

11. 5 x 1 = 5
12. The coefficient of -5x is ___________

()

-5

13. 7x - 5y + 3 has __________ terms

()

3

14. An expression having only two terms is called a __________

()

binomial

15. The degree of polynomial 5x2y + 3x3y2 + 3xy +7 is ____________

()

5

16. The sum of 7x2 - 4x + 5 and 9x - 10 is __________

()

7x2 + 5x - 5