# 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 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. 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.
Ans: 10y + x
Hint:
Required number
= 10 × y + 1 × x = 10y + x.