Download App

Rational Numbers — MATHS STD 8 — Question

Gujarat BoardEnglish MediumSTD 8MATHSRational Numbers1 Mark
MCQ
Assertion (A): Rational numbers are associative for subtraction
Reason (R): The associative property states that the sum or the product of three or more numbers does not change if they are grouped in a different way.
  • A
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • ✓
    A is false but R is true
✓

Answer

Correct option: D.
A is false but R is true
D

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Assertion (A) & Reason (B) MCQ" from Rational Numbers→Rational Numbers — all question types→MATHS STD 8 question papers→Gujarat Board STD 8 question papers→Gujarat Board question paper generator→

Similar questions

Assertion (A): 20 trucks can hold 150 metric tonnes. 12 trucks will hold 80 metric tonnes.
Reasons (R): A direct proportion shows the direct the relation between two quantities.
→
Assertion (A): 1m3 = 1000000cm3
Reasons (R): Area is the quantity that expresses the extent of a two-dimensional region, shape, or planar lamina, in the plane.
→
Assertion (A): Natural numbers are closed under division
Reason (R): A rational number is a number that is in the form of $\frac{\text{p}}{\text{q}}$ where p and q are integers, and q is not equal to 0.
→
Assertion (A): $\frac{\text{am}}{\text{bm}}$ is  equal to bm (ab)m.
Reasons (R): quotient of powers property.
→
Assertion (A): (-1)50 is equal to 50.
Reasons (R): An exponent refers to the number of times a number is multiplied by itself.
→
Assertion (A): 7828 is a perfect square number.
Reasons (R): A perfect square is a number that can be expressed as the product of an integer by itself or as the second exponent of an integer.
→
Assertion (A): If 100 men together can do a work in 1 day then 1 man alone can do it in 100 days.
Reason (R): 100 men's 1 day's work $=1$.
Then, 1 man's 1 day's work $=\frac{1}{100}$.
→
Directions: In the following questions, the Assertions $(A)$ and Reason(s) $(R)$ have been put forward. Read both the statements carefully and choose the correct alternative from the following:
Assertion (A): The root of the equation $14 - x = 8$ is $7$
Reason (R): The value of the variable which makes left hand side equal to right hand side in the given equation is called the solution or the root of the equation
→
Observe the figure as reasons for the following assertions:
Daily WagesNumber of Workers
290-3255
325-3602
360-3954
395-4306
430-4657
465-5005
Assertion (A): 430 - 465 and 465 - 500 have the same frequency.
→
Assertion (A): $\frac{1}{2}$ of 2 is a rational number
Reason (R): a rational number is a type of real numbers, which is in the form of $\frac{\text{p}}{\text{q}}$ where q is not equal to zero
→