MCQ Rational Numbers, Chapter 1 Class 8 Maths

1. What should be added to -5/4 to get -1?

(a) -1/4

(b) 1/4

(c) 1

(d) -3/4

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Question 1 of 15

2. What should be subtracted from -5/4 to get -1?

(a) -1/4

(b) 1/4

(c) 1

(d) -3/4

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Question 2 of 15

3. Which of the following is the identity element?

(a) 1

(b) -1

(c) 0

(d) None of these

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Question 3 of 15

4. Which of the following is the Multiplicative identity for rational numbers?

(a) 1

(b) -1

(c) 0

(d) None of these

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Question 4 of 15

5. Which of the following lies between 0 and -1?

(a) 0

(b) -3

(c) -2/3

(d) 4/3

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Question 5 of 15

6. Which of the following is the product of 7/8 and -4/21?

(a) -1/6

(b) 1/12

(c) -16/63

(d) -147/16

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Question 6 of 15

7. Which of the following is the product of (-7/8) and 4/21?

(a) -1/6

(b) 12

(c) -63/16

(d) -16/147

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Question 7 of 15

8. Which of the following is the reciprocal of the reciprocal of a rational number?

(a) -1

(b) 1

(c) 0

(d) The number itself

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Question 8 of 15

9. Write the rational number that is equal to its reciprocal

a. -2

b. 0

c. 2

d. 1

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Question 9 of 15

10. Sum of two rational numbers is a _______.

a. negative number

b. irrational number

c. none of these

d. rational number

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Question 10 of 15

11. For any three rational numbers a, b and c, a + (b + c) = __________.

a. (a + b) + c

b. (a + b) - c

c. (a - b) - c

d. (a - b) + c

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Question 11 of 15

12. Name the property under multiplication used in

a. Associative property

b. none of these

c. Commutative property

d. Multiplicative identity

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Question 12 of 15

13. Find the multiplicative inverse of 1/4.

a. -1

b. 1

c. -4

d. 4

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Question 13 of 15

14.

a. 1/4

b. 0

c. 4

d. 1

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Question 14 of 15

15. Find the multiplicative inverse of -13.

a. 13

b. -13

c. -1/13

d. 12

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Question 15 of 15