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 Part-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.	Mcq Class 8 Maths Chapter 2 When 9 is added to two times a number, we get 67. The number is
	A. 25
	B. 27
	C. 29
	D. 31.

Ans: 29
Hint:
2x + 9 = 67 ⇒ x = 29.

Q2.	Mcq for Class 8 Maths Chapter 2 The root of the equation –\(\frac{5}{4x}\) = 15 is
	A. \(\frac{1}{12}\)
	B. –\(\frac{1}{12}\)
	C. \(\frac{1}{20}\)
	D. –\(\frac{1}{20}\)

Ans: –\(\frac{1}{12}\)
Hint:
–\(\frac{5}{4x}\) = 15 ⇒ x = –\(\frac{5}{4×15}\) = –\(\frac{1}{12}\)

Q3.	Mcq Questions for Class 8 Maths with answers pdf Chapter 2 The value of x in \(\frac{3}{4}\) x = 7 – x is
	A. 4
	B. 3
	C. \(\frac{7}{3}\)
	D. 7.

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

Q4.	Mcq Questions for Class 8 Maths with answers pdf download \(\frac{3}{4}\) part of a number is 5 more than its \(\frac{2}{3}\) part. This statement in the form of an equation is
	A. \(\frac{2}{3}\) x – \(\frac{3}{4}\) x= 5
	B. \(\frac{2}{3}\) x – 5 =\(\frac{3}{4}\) x
	C. \(\frac{3}{4}\) x = \(\frac{2}{3}\) x + 5
	D. \(\frac{3}{4}\) x – 5 = –\(\frac{2}{3}\) x

Ans: \(\frac{3}{4}\) x = \(\frac{2}{3}\) x + 5
Hint:
Let the number be x²

Q5.	Ncert Class 8 Maths Mcq Chapter 2 The value of x in –\(\frac{2}{3}\) = 2x is 3
	A. \(\frac{1}{3}\)
	B. –\(\frac{1}{3}\)
	C. 3
	D. – 3.

Ans: –\(\frac{1}{3}\)
Hint:
–\(\frac{2}{3}\) = 2x ⇒ x = –\(\frac{1}{3}\)

Q6.	Ncert Class 8 Maths Mcq Questions The root of the equation 5x – 8 = 7 is
	A. 1
	B. 2
	C. 3
	D. -3.

Ans: 3
Hint:
5x – 8 = 7 ⇒ 5x = 8 + 7 = 15
⇒ x = \(\frac{15}{5}\) = 3.

Q7.	CBSE Class 8 Maths Chapter 2 Mcq The root of the equation x + 3 = 5 is
	A. 1
	B. 2
	C. -1
	D. -2.

Ans: 2
Hint:
x + 3 = 5 ⇒ x = 5 – 3 = 2.

Q8.	CBSE Class 8 Maths Chapter 2 Mcq Questions The root of the equation x – 8 = 2 is
	A. 2
	B. 8
	C. 6
	D. 10.

Ans:
Hint:
x – 8 = 2 ⇒ x = 2 + 8 = 10.

Q9.	CBSE Class 8 Maths Linear Equations in One Variable Mcq The root of the equation 3x + 8 = 14 is
	A. 1
	B. 2
	C. -1
	D. \(\frac{1}{2}\)

Ans: 2
Hint:
3x + 8 = 14 ⇒ 3x = 14 – 8 = 6
⇒ x = \(\frac{6}{3}\) = 2.

Q10.	CBSE Class 8 Maths Mcq Questions The root of the equation 2y = 5(3 + y) is
	A. 5
	B. \(\frac{1}{5}\)
	C. -5
	D. –\(\frac{1}{5}\)

Ans: -5
Hint:
2y = 5 (3 + y) ⇒ 2y = 15 + 5y
⇒ 5y – 2y = -15
⇒ 3y = -15 ⇒ y = –\(\frac{15}{3}\) = -5

Q11.	CBSE Class 8 Maths Linear Equations in One Variable Mcq Questions The root of the equation \(\frac{y}{3}\) – 7 = 11 is
	A. 54
	B. -54
	C. 18
	D. -18

Ans: 54
Hint:
\(\frac{y}{3}\) – 7 = 11 ⇒ \(\frac{y}{3}\) = 7 + 11 = 18
⇒ y = 3 × 18 = 54

Q12.	Class 8 Maths Mcq Chapter 2 The root of the equation 14 – x = 8 is
	A. 2
	B. 4
	C. 6
	D. 8.

Ans: 6
Hint:
14 – x = 8 ⇒ x = 14 – 8 = 6

Q13.	Class 8 Maths Mcq online test The root of the equation \(\frac{5x}{3}\) = 30 is
	A. 9
	B. 12
	C. 15
	D. 18

Ans: 18
Hint:
\(\frac{5x}{3}\) = 30 ⇒ 5x = 3 × 30 = 90
⇒ x = \(\frac{90}{5}\) = 18

Q14.	Class 8 Maths Mcq with answers The root of the equation 3y + 4 = 5y – 4 is
	A. 1
	B. 2
	C. 3
	D. 4.

Ans: 4.
Hint:
3y + 4 = 5y – 4 ⇒ 5y – 3y = 4 + 4
⇒ 2y = 8 ⇒ y = \(\frac{8}{2}\) = 4

Q15.	Learn Cbse Class 8 Maths Mcq The root of the equation \(\frac{7x}{3}\) = 3 is
	A. \(\frac{5x}{3}\)
	B. \(\frac{5x}{3}\)
	C. 3
	D. 7

Ans: \(\frac{5x}{3}\)
Hint:
\(\frac{7}{x}\) = 3 ⇒ 3x = 7 ⇒ x = \(\frac{7}{3}\)

Q16.	Mcq Class 8 Maths Chapter 2 The root of the equation 3x + 4 = 13 is
	A. 1
	B. 2
	C. 3
	D. 4.

Ans: 3
Hint:
3x + 4 = 13 ⇒ 3x = 13 – 4 = 9
⇒ x = \(\frac{9}{3}\) = 3

Q17.	Mcq for Class 8 Maths Chapter 2 The root of the equation 9z – 15 = 9 – 3z is
	A. 1
	B. 2
	C. 3
	D. 4.

Ans: 2
Hint:
9z – 15 = 9 – 3z ⇒ 9z + 3z = 9 + 15
⇒ 12x = 24 ⇒ z = \(\frac{24}{12}\) = 2

Q18.	Mcq Questions for Class 8 Maths with answers pdf Chapter 2 The root of the equation \(\frac{4x}{7}\) – 12 = 0 is
	A. 7
	B. 14
	C. 21
	D. -21

Ans: 21
Hint:
\(\frac{4x}{7}\) – 12 = 0 ⇒ \(\frac{4x}{7}\) = 12
⇒ 4x = 7 × 12 = 84
⇒ x = \(\frac{84}{4}\) = 21

Q19.	Mcq Questions for Class 8 Maths with answers pdf download The root of the equation 3x = \(\frac{20}{7}\) – x is
	A. \(\frac{7}{5}\)
	B. \(\frac{5}{7}\)
	C. –\(\frac{7}{5}\)
	D. –\(\frac{5}{7}\)

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