# MCQ Questions for Class 8 Maths Chapter 9 Algebraic Expressions and Identities with Answers

Students are advised to solve the Algebraic Expressions and Identities Multiple Choice Questions of Class 8 Maths to know different concepts. Practicing the MCQ Questions on Algebraic Expressions and Identities Class 8 with answers will boost your confidence thereby helping you score well in the exam.

Explore numerous MCQ Questions of Algebraic Expressions and Identities Class 8 with answers provided with detailed solutions by looking below.

Question 1.
When numbers/literals are added or subtracted, they are called _________.
(a) identities
(b) expressions
(c) variables
(d) terms

Question 2.
The expression 7xy has the factors
(a) 7,x,y
(b) x,y
(c) 7,x
(d) 7,y

Question 3.
Which of the following is like term as 7xy?
(a) 9
(b) 9x
(c) 9y
(d) 9xy

Question 4.
The like terms of the following are
(a) x, 3x
(b) x, 2y
(c) 2y, 6xy
(d) 3x, 2y

Answer: (a) x, 3x

Question 5.
The coefficient in the term -5x is
(a) 5
(b) -5
(c) 1
(d) 2

Question 6.
How many terms are there in the expression 5xy + 9yz + 3zx + 5x – 4y ?
(a) 1
(b) 3
(c) 4
(d) 5

Question 7.
Which of the following is a monomial?
(a) 4x2
(b) a + 6
(c) a + 6 + c
(d) a + b + c + d

Question 8.
Add: 7xy + 5yz – 3zx, 4yz + 9zx – 4y, –3xz + 5x – 2xy.
(a) 5xy + 3zx + 5x – 4y
(b) 5xy + 9yz +2zx + 5x – 4y
(c) 5xy + 9yz +3zx + 5x – 4y
(d) 5xy + 9yz +3zx + 4y

Answer: (c) 5xy + 9yz +3zx + 5x – 4y

Question 9.
Like terms in the expression 7x, 5x2, 7y, -5yx, -9x2, are
(a) 7x, -5yx
(b) 5x2, -5yx
(c) 5x2, -9x2
(d) 7x, 7y

Answer: (c) 5x2, -9x2

Question 10.
The coefficient of x in the expression -7x +5 is
(a) 5
(b) -7
(c) 7
(d) 0

Question 11.
Expressions consists of _____________ and _______________.
(a) variables, constants
(b) identities
(c) expressions
(d) none of these

Answer: (a) variables, constants

Question 12.
The volume of rectangular box whose length, breadth and height is 2p,4q.8r respectively is
(a) 14pqr
(b) 2p+4q+8r
(c) 64pqr
(d) 64

Question 13.
Which of the following is a binomial?
(a) 4x + y + 2
(b) 2x + 7
(c) 3x + 4y – 6
(d) 3x

Answer: (b) 2x + 7

Question 14.
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 15.
Value of expression ‘a(a2+a +1)+5’ for ‘ a’ = 0 is
(a) a+5
(b) 1
(c) 6
(d) 5

Question 16.
n (4 + m) = 4n + ___
(a) 4m
(b) 4n
(c) 4mn
(d) nm

Question 17.
If x = 3 is solution of x2 + kx + 15, value of k is
(a) k = -8, x = 3
(b) k = 8, x = 5
(c) k = 6, x = 5
(d) None of above

Answer: (a) k = -8, x = 3

Question 18.
How many terms are there in the expression 5 – 3xy ?
(a) 1
(b) 2
(c) 3
(d) 5

Question 19.
The expression x + y + z is in
(a) one variable
(b) no variable
(c) three variables
(d) two variables

Answer: (c) three variables

Question 20.
Terms are added to form ___________.
(a) expressions
(b) terms
(c) identities
(d) none of these

Question 21.
The number of terms in the expression 2x2+3x+5 is
(a) 1
(b) 2
(c) 3
(d) 5

Question 22.
Which of the following is an expression?
(a) $$\frac { 1 }{ 2 }$$
(b) 3
(c) 3x-2
(d) 2