MCQ Questions for Class 8 Maths Chapter 2 Linear Equations in One Variable with Answers Advertisement 1. The standard form of a linear equation in one variable x is ax + b = 0ax² + bx + c = 0 ax³ + bx² + cx + d = 0ax4 + bx³ + cx² + dx + e = 0Question 1 of 202. Of the following, the linear equation in one variable x, is4/x = x/41/x + 1/x−1 = 1x/2 + x/3 + 1/4x² + 2x + 3 = 0Question 2 of 203. The degree of the equation x² – 2x + 1 = x² – 3 is1203Question 3 of 204. The statement ‘on adding 10 in a number, the number becomes 20’ in the form of an equation isx – 10 = 20x + 10 = 2010x = 20 x/10 = 20Question 4 of 205. If 9 is added to a number, it becomes 25. This statement in the form of an equation isx + 9 = 25 x – 9 = 259x = 25x/9 = 25Question 5 of 206. If 15 is subtracted from a number, it becomes -5. This statement in the form of an equation isx + 15 = -5 x – 15 = 5x + 15 = 5x – 15 = -5Question 6 of 207. Seven times a number is 42. This statement in the form of an equation isx + 7 = 427x = 42x/7 = 42x – 7 = 42Question 7 of 208. A number when divided by 5 gives 6. This statement in the form of an equation is x – 5 = 6 x + 5 = 6x/5 = 65x = 6Question 8 of 209. A number when subtracted from 40 results into 15. This statement in the form of an equation is40 – x = 15x – 40 = 1540 + x = 1540x = 15Question 9 of 2010. If 6 is added to 3 times of a number, it becomes 15. This statement in the form of an equation is3x + 6 = 153x – 6 = 15 3x + 15 = 6 3x/6 = 15Question 10 of 2011. On subtracting 30 from two times a number, we get 56. This statement in the form of an equation is2x – 30 = 562x + 30 = 5630 – 2x = 5630/2x = 56Question 11 of 2012. The root of the equation z + 4 = -8 is3-32-124Question 12 of 2013. The root of the equation 3x = 20/7 – x is1020/21– 5/75/7Question 13 of 2014. The root of the equation 2x + 3 = 2(x – 4) is240does not existQuestion 14 of 2015. The solution of the equation 5/x = 2 is102/55/21/10Question 15 of 2016. The largest number of the three consecutive numbers is x + 1. Then, the smallest number isx + 2x + 1xx – 1Question 16 of 2017. If x is an even number then the consecutive even number isx + 1x + 22xx – 1Question 17 of 2018. x is an odd number. The largest odd number preceding x isx – 1x – 2x – 3x – 4Question 18 of 2019. The difference of two numbers is 21. The larger number is x. The smaller number is21 + x21 – x x – 21-x – 21Question 19 of 2020. In a two digit number, the unit’s digit is x and the ten’s digit is y. Then, the number is10y + x10x + y10y – x10x – yQuestion 20 of 20 Loading...
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