MCQ Questions | Class 8 Maths Chapter 2 | Linear Equations in One Variable with Answers

MCQ | Linear Equations in One Variable Class 8

Check the below NCERT MCQ Questions for Class 8 Maths Chapter 2 Linear Equations in One Variable with Answers Pdf free download. MCQ Questions for Class 8 Maths with Answers were prepared based on the latest exam pattern. We have Provided Linear Equations in One Variable Class 8 Maths MCQs Questions with Answers to help students understand the concept very well.

Objective Question | NCERT Maths Class 8

NCERT Solutions Class 8 Maths
Book:	National Council of Educational Research and Training (NCERT)
Board:	Central Board of Secondary Education (CBSE)
Class:	8th
Subject:	Maths
Chapter:	2
Chapters Name:	Linear Equations in One Variable
Medium:	English

Ncert Solutions for Class 8 Maths | Objective Type Questions

You can refer to NCERT Solutions for Class 8 Maths Chapter 2 Linear Equations in One Variable to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Linear Equations in One Variable | Class 8 Maths | NCERT Solutions

Q1.	CBSE Class 8 Maths Linear Equations in One Variable Mcq Questions The standard form of a linear equation in one variable x is
	A. ax + b = 0
	B. ax² + bx + c = 0
	C. ax³ + bx² + cx + d = 0
	D. ax⁴ + bx³ + cx² + dx + e = 0.

Ans: ax + b = 0

Q2.	Class 8 Maths Mcq Chapter 2 Of the following, the linear equation in one variable x, is
	A. \(\frac{4}{x}\) = \(\frac{x}{4}\)
	B. \(\frac{1}{x}\) + \(\frac{1}{x-1}\) = 1
	C. \(\frac{x}{2}\) + \(\frac{x}{3}\) + \(\frac{1}{4}\)
	D. x² + 2x + 3 = 0.

Ans: \(\frac{x}{2}\) + \(\frac{x}{3}\) + \(\frac{1}{4}\)

Q3.	Class 8 Maths Mcq online test The degree of the equation x² – 2x + 1 = x² – 3 is
	A. 1
	B. 2
	C. 0
	D. 3.

Ans: 1
Hint:
x² – 2x + 1 = x² – 3 ⇒ 2x = 4

Q4.	Class 8 Maths Mcq with answers The statement ‘on adding 10 in a number, the number becomes 20’ in the form of an equation is
	A. x – 10 = 20
	B. x + 10 = 20
	C. 10x = 20
	D. \(\frac{x}{10}\) = 20.

Ans: x + 10 = 20
Hint:
Let the number be x.

Q5.	Learn Cbse Class 8 Maths Mcq If 9 is added to a number, it becomes 25. This statement in the form of an equation is
	A. x + 9 = 25
	B. x – 9 = 25
	C. 9x = 25
	D. \(\frac{x}{9}\) = 25.

Ans: x + 9 = 25
Hint:
Let the number be x.

Q6.	Mcq Class 8 Maths Chapter 2 If 15 is subtracted from a number, it becomes -5. This statement in the form of an equation is
	A. x + 15 = -5
	B. x – 15 = 5
	C. x + 15 = 5
	D. x – 15 = -5.

Ans: x – 15 = -5.
Hint:
Let the number be x.

Q7.	Mcq for Class 8 Maths Chapter 2 Seven times a number is 42. This statement in the form of an equation is
	A. x + 7 = 42
	B. 7x = 42
	C. \(\frac{x}{7}\) = 42
	D. x – 7 = 42.

Ans: 7x = 42
Hint:
Let the number be x.

Q8.	Mcq Questions for Class 8 Maths with answers pdf Chapter 2 A number when divided by 5 gives 6. This statement in the form of an equation is
	A. x – 5 = 6
	B. x + 5 = 6
	C. \(\frac{x}{5}\) = 6
	D. 5x = 6.

Ans: \(\frac{x}{5}\) = 6
Hint:
Let the number be x.

Q9.	Mcq Questions for Class 8 Maths with answers pdf download A number when subtracted from 40 results into 15. This statement in the form of an equation is
	A. 40 – x = 15
	B. x – 40 = 15
	C. 40 + x = 15
	D. 40x = 15.

Ans: 40 – x = 15
Hint:
Let the number be x.

Q10.	Ncert Class 8 Maths Mcq Chapter 2 If 6 is added to 3 times of a number, it becomes 15. This statement in the form of an equation is
	A. 3x + 6 = 15
	B. 3x – 6 = 15
	C. 3x + 15 = 6
	D. \(\frac{3x}{6}\) = 15.

Ans: 3x + 6 = 15
Hint:
Let the number be x.

Q11.	Ncert Class 8 Maths Mcq Questions On subtracting 30 from two times a number, we get 56. This statement in the form of an equation is
	A. 2x – 30 = 56
	B. 2x + 30 = 56
	C. 30 – 2x = 56
	D. \(\frac{30}{2x}\) = 56.

Ans: 2x – 30 = 56
Hint:
Let the number be x.

Q12.	CBSE Class 8 Maths Chapter 2 Mcq The root of the equation z + 4 = -8 is
	A. 3
	B. -32
	C. 12
	D. 4.

Ans: -32
Hint:
z + 4 = -8 ⇒ \(\frac{z}{4}\) = -8
⇒ z = 4 (-8) = -32.

Q13.	CBSE Class 8 Maths Chapter 2 Mcq Questions The root of the equation 3x = \(\frac{20}{7}\) – x is
	A. 10
	B. \(\frac{20}{21}\)
	C. –\(\frac{5}{7}\)
	D. \(\frac{5}{7}\)

Ans: \(\frac{5}{7}\)
Hint:
3x = \(\frac{20}{7}\) – x ⇒ 3x + x = \(\frac{20}{7}\)
⇒ 4x = \(\frac{20}{7}\) ⇒ x = \(\frac{20}{7×4}\) = \(\frac{5}{7}\)

Q14.	CBSE Class 8 Maths Linear Equations in One Variable Mcq The root of the equation 2x + 3 = 2(x – 4) is
	A. 2
	B. 4
	C. 0
	D. does not exist.

Ans: does not exist.
Hint:
2x + 3 = 2 (x – 4)
⇒ 2x + 3 = 2x – 8
⇒ 3 = -8 which is impossible.

Q15.	CBSE Class 8 Maths Mcq Questions The solution of the equation \(\frac{5}{x}\) = 2 is
	A. 10
	B. \(\frac{2}{5}\)
	C. \(\frac{5}{2}\)
	D. \(\frac{1}{10}\)

Ans: \(\frac{5}{2}\)
Hint:
\(\frac{5}{x}\) = 2
⇒ 2x = 5 ⇒ x = \(\frac{5}{2}\)

Q16.	CBSE Class 8 Maths Linear Equations in One Variable Mcq Questions The largest number of the three consecutive numbers is x + 1. Then, the smallest number is
	A. x + 2
	B. x + 1
	C. x
	D. x – 1.

Ans: x – 1.
Hint:
x – 1, x, x + 1

Q17.	Class 8 Maths Mcq Chapter 2 If x is an even number then the consecutive even number is
	A. x + 1
	B. x + 2
	C. 2x
	D. x – 1.

Ans: x + 2

Q18.	Class 8 Maths Mcq online test x is an odd number. The largest odd number preceding x is
	A. x – 1
	B. x – 2
	C. x – 3
	D. x – 4.

Ans: x – 2

Q19.	Class 8 Maths Mcq with answers The difference of two numbers is 21. The larger number is x. The smaller number is
	A. 21 + x
	B. 21 – x
	C. x – 21
	D. -x – 21.

Ans: x – 21
Hint:
x – smaller number = 21
⇒ smaller number = x – 21

Q20.	Learn Cbse Class 8 Maths Mcq In a two digit number, the unit’s digit is x and the ten’s digit is y. Then, the number is
	A. 10y + x
	B. 10x + y
	C. 10y – x
	D. 10x – y.