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## MCQ Questions for Class 8 Mathematics with Answers

## Q1. Which of the following statements is false ?

(i) Natural numbers are closed under subtraction

(ii) Whole numbers are not closed under subtraction

(iii) Integers are closed under subtraction

(iv) Rational numbers are closed under subtraction.

(i) Natural numbers are closed under subtraction

## Q2. A rational number can be represented in the form of:

(i) p/q

(ii) pq

(iii) p+q

(iv) p-q

(i) p/q

## Q3. Which of the following statements is true?

(i) Natural numbers are closed under division.

(ii) Whole numbers are not closed under division.

(iii) Integers are closed under division.

(iv) Rational numbers are closed under division.

(iii) Integers are closed under division

## Q4. Which of the following statements is true?

(i) Every fraction is a rational number.

(ii) Every rational number is a fraction.

(iii) Every integer is a rational number.

(iv) Both (i) and (iii).

(iv) Both (i) and (iii).

## Q5. Find the reciprocal of -2.

(i) 2

(ii) -2

(iii) -1/2

(iv) None of these

c) -1/2

## Q6. 0 is not

(i) a natural number

(ii) a whole number

(iii) an integer

(iv) a rational number.

(i) a natural number

## Q7. The value of ½ x ⅗ is equal to:

(i) ½

(ii) 3/10

(iii) ⅗

(iv) ⅖

(ii) 3/10

## Q8. The additive identity for rational numbers is

(i) 1

(ii) -1

(iii) 0

(iv) None of these

(iii) 0

## Q9. Which of the following is the reciprocal of the reciprocal of a rational number?

(i) -1

(ii) 1

(iii) 0

(iv) The number itself

(iv) The number itself

## Q10. What is the sum of the additive inverse and multiplicative inverse of 2?

(i) 3/2

(ii) -3/2

(iii) 1/2

(iv) -1/2

(ii) -3/2

## Q11. a + b = b + a is called

(i) commutative law of addition

(ii) associative law of addition

(iii) distributive law of addition

(iv) none of these.

(i) commutative law of addition

## Q12. The value of ½ + ¼ is equal to:

(i) ¾

(ii) 3/2

(iii) ⅔

(iv) 1

(i) ¾

## Q13. Which of the following is the Multiplicative identity for rational numbers?

(i) 1

(ii) -1

(iii) 0

(iv) None of these

(i) 1

## Q14. What is the additive inverse of -2/3?

(i) 0

(ii) 1

(iii) 2/3

(iv) -2/3

(iii) 2/3

## Q15. (a + b) + c = a + (b + c) is called

(i) commutative law for multiplication

(ii) commutative law for addition

(iii) associative law for addition

id) associative law for multiplication.

(iii) associative law for addition

## Q16. The associative property is applicable to:

(i) Addition and subtraction

(ii) Multiplication and division

(iii) Addition and Multiplication

(iv) Subtraction and Division

(iii) Addition and Multiplication

## Q17. A number which can be written in the form, p/q where p and q are integers and **_** is called a rational number.

(i) q = 0

(ii) q ≠ 0

(iii) q = 1

(iv) none of these

(ii) q ≠ 0

## Q18. a(b + c) = ab + ac is called

(i) commutative law

(ii) associative law

(iii) distributive law

(iv) none of these.

(iii) distributive law

## Q19. The additive identity of rational numbers is:

(i) 0

(ii) 1

(iii) 2

(iv) -1

(i) 0

## Q20. Find the multiplicative inverse of -13.

(i) 13

(ii) -13

(iii) -1/13

(iv) 12

(iii) -1/13

## Q21. The multiplicative inverse of 1/2 is

(i) 1

(ii) -1

(iii) 2

(iv) 0

(iii) 2

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