Rational Numbers – Chapter 1/ MCQ

CBSE CLASS 8 MATHEMATICS
Rational Numbers – Chapter 1/ MCQ
Multiple Choice Questions.

Choose the correct answers from the options given below:

1. Which is the multiplicative inverse of 0.5?
A. 5/10
B. 10/5
C. 5
2. The reciprocal of -1 is ——————
A. 1
B. -1
C. 0
3. For any three rational numbers a, b and c, a x (b x c) = (a x b) x c. This property is known as ————–
A. Commutative property
B. Associative property
C. Distributive property
4. The product of ½ and -1/4 is ———–
A. 1/8
B. -1/8
C. -2
5. Which is called the identity for the addition of rational numbers, integers and whole numbers?
A. Zero
B. 1
C. -1
6. The reciprocal of the reciprocal of 9 is ————–
A. 1/9
B. 9
C. 1
7. Additive inverse of ¼ is ———-
A. ¼
B. -1/4
C. 48.
8. The reciprocal of -3/4 is ————
A. -3/4
B. ¾
C. -4/3
9. The rational number which when added to it gives the same number is —————–
A. 1
B. -1
C. 0
10. Which of the following is known as Distributivity of Multiplication over subtraction?
A. For all rational numbers a, b and c, a (b-c) = ab – ac
B. For all rational numbers a, b and c, a (b+ c) = ab + ac
C. For all rational numbers a, b and c, a x (b x c) = (a x b) x c.
11. The product of two rational numbers is always a ————-
A. Rational number
B. Irrational number
C. Whole number
12. The reciprocal of a negative rational number is ——––
A. Positive
B. Negative
C. One
13. The rational number that is equal to its negative is ———-
A. 0
B. 1
C. -1
14. The rational number that does not have a reciprocal is ——-
A. 0
B. 1
C. -1
15. Which of the following is a rational number between 1 and -1?
A. ½
B. 3/2
C.-3/2

ANSWERS:

1. 10/5

2. -1

3. Associative property

4. -1/8

5. Zero

6. 9

7. -1/4

8. -4/3

9. 0

10. For all rational numbers a, b and c, a (b – c) = ab – ac.

11. Rational number

12. Negative

13. 0

14. 0

15. ½.