# 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

## Answer

Answer: (d) terms

Question 2.

The expression 7xy has the factors

(a) 7,x,y

(b) x,y

(c) 7,x

(d) 7,y

## Answer

Answer: (a) 7,x,y

Question 3.

Which of the following is like term as 7xy?

(a) 9

(b) 9x

(c) 9y

(d) 9xy

## Answer

Answer: (d) 9xy

Question 4.

The like terms of the following are

(a) x, 3x

(b) x, 2y

(c) 2y, 6xy

(d) 3x, 2y

## Answer

Answer: (a) x, 3x

Question 5.

The coefficient in the term -5x is

(a) 5

(b) -5

(c) 1

(d) 2

## Answer

Answer: (b) -5

Question 6.

How many terms are there in the expression 5xy + 9yz + 3zx + 5x – 4y ?

(a) 1

(b) 3

(c) 4

(d) 5

## Answer

Answer: (d) 5

Question 7.

Which of the following is a monomial?

(a) 4x^{2}

(b) a + 6

(c) a + 6 + c

(d) a + b + c + d

## Answer

Answer: (a) 4x^{2}

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

Answer: (c) 5xy + 9yz +3zx + 5x – 4y

Question 9.

Like terms in the expression 7x, 5x^{2}, 7y, -5yx, -9x^{2}, are

(a) 7x, -5yx

(b) 5x^{2}, -5yx

(c) 5x^{2}, -9x^{2}

(d) 7x, 7y

## Answer

Answer: (c) 5x^{2}, -9x^{2}

Question 10.

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

(a) 5

(b) -7

(c) 7

(d) 0

## Answer

Answer: (b) -7

Question 11.

Expressions consists of _____________ and _______________.

(a) variables, constants

(b) identities

(c) expressions

(d) none of these

## Answer

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

## Answer

Answer: (c) 64pqr

Question 13.

Which of the following is a binomial?

(a) 4x + y + 2

(b) 2x + 7

(c) 3x + 4y – 6

(d) 3x

## Answer

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)

## Answer

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

Question 15.

Value of expression ‘a(a^{2}+a +1)+5’ for ‘ a’ = 0 is

(a) a+5

(b) 1

(c) 6

(d) 5

## Answer

Answer: (d) 5

Question 16.

n (4 + m) = 4n + ___

(a) 4m

(b) 4n

(c) 4mn

(d) nm

## Answer

Answer: (d) nm

Question 17.

If x = 3 is solution of x^{2} + 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

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

## Answer

Answer: (b) 2

Question 19.

The expression x + y + z is in

(a) one variable

(b) no variable

(c) three variables

(d) two variables

## Answer

Answer: (c) three variables

Question 20.

Terms are added to form ___________.

(a) expressions

(b) terms

(c) identities

(d) none of these

## Answer

Answer: (a) expressions

Question 21.

The number of terms in the expression 2x^{2}+3x+5 is

(a) 1

(b) 2

(c) 3

(d) 5

## Answer

Answer: (c) 3

Question 22.

Which of the following is an expression?

(a) \(\frac { 1 }{ 2 }\)

(b) 3

(c) 3x-2

(d) 2

## Answer

Answer: (c) 3x-2

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