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Algebraic Expressions and Identities, Chapter 9 Class 8 Maths MCQs

1. The coefficient of x in the expression -7x +5 is

(a) 5

(b) -7

(c) 7

(d) x
 
 
 
 

Question 1 of 20

2. The numerical coefficient of y in the expression 2x+3y+7z is

(a) 2

(b) 3

(c) 7

(d) 3y
 
 
 
 

Question 2 of 20

3. The expression y+z+100 is a

(a) monomial

(b) literal number

(c) binomial

(d) trinomial
 
 
 
 

Question 3 of 20

4. The expression 7xy has the factors

(a) 7,x,y

(b) x,y

(c) 7,x

(d) 7,y
 
 
 
 

Question 4 of 20

5. The common factors of the terms 2y. 22xy is

(a) 2

(b) 2y

(c) y

(d) xy
 
 
 
 

Question 5 of 20

6. The addition of ab-bc, bc-ca, ca-ab is

(a) 3ab+3bc+3ca

(b) 0

(c) ab+bc+ca

(d) ab-bc+ca
 
 
 
 

Question 6 of 20

7. One of the example of binomial is

(a) 3xyz

(b) 3xy+z

(c) 3x+y+z

(d) 3+x+y+z
 
 
 
 

Question 7 of 20

8. The area of triangle is‟ xy‟ where‟ x‟ is length and „y‟ is breadth. If the length of rectangle is increased by 5 units and breadth is decreased by 3 units, the new area of rectangle will be

(a) (x-y)(x+3)

(b) xy+15

(c) (x+5)(y-3)

(d) xy +5-3
 
 
 
 

Question 8 of 20

9. Multiplication of pq+qr+rp and ‘zero’ is

(a) pq+qr

(b) pq+rp

(c) pq+qr+rp

(d) 0
 
 
 
 

Question 9 of 20

10. The value of 3x(4x-5)+3 for x=3

(a) -6

(b) 66

(c) 106

(d) 0
 
 
 
 

Question 10 of 20

11. Which of the following expression is trinomial

(a) xyz

(b) xy+z

(c) x+y+z

(d) x+yz
 
 
 
 

Question 11 of 20

12. Which of the following expression is monomial

(a) x+1

(b) pqr

(c) pq+r

(d) p+qr
 
 
 
 

Question 12 of 20

13. Subtracting 7x +y from –x +y gives

(a) 6x+2y

(b) 8x+2y

(c) -8x

(d) 8x
 
 
 
 

Question 13 of 20

14. Find the value of 95 x 102 by suitable identity.

(a) 10310

(b) 10290

(c) 10690

(d) 9690
 
 
 
 

Question 14 of 20

15. The value of 2x (-3x) is

 
 
 
 

Question 15 of 20

16. Area of rectangle of length ‘3x’ and breadth ‘5y’ is

(a) 3x+5y

(b) 15xy

(c) 15x

(d) 15y
 
 
 
 

Question 16 of 20

17. Number of terms in the expression xyz+1 is

(a) 4

(b) 3

(c) 2

(d) 1
 
 
 
 

Question 17 of 20

18. The product of -4p and 7p is

 
 
 
 

Question 18 of 20

19. Use suitable identity to evaluate (a) 9801

(b) 10199

(c) 10201

(d) 10001
 
 
 
 

Question 19 of 20

20. Multiplication of ‘ab’ and ‘a-b’ is

 
 
 
 

Question 20 of 20