# 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

Book: National Council of Educational Research and Training (NCERT) Central Board of Secondary Education (CBSE) 8th Maths 2 Part-2 Linear Equations in One Variable 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 = $$\frac{20}{7×4}$$ = $$\frac{5}{7}$$
 Q20. Ncert Class 8 Maths Mcq Chapter 2 The root of the equation 2y = 5 (7 – y ) is A. 5 B. -5 C. 3 D. -3.
Ans: 5
Hint:
2y = 5(7 – y) ⇒ 2y = 35 – 5y
⇒ 2y + 5y = 35
⇒ 7y = 35 ⇒ y = $$\frac{35}{7}$$ = 5