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## Online Education for Rational Numbers Class 8 MCQs Questions with Answers

Class 8 Maths Chapter 1 MCQ Question 1.
Which of the following statements is false ?
(a) Natural numbers are closed under addition
(b) Whole numbers are closed under addition
(c) Integers are closed under addition
(d) Rational numbers are not closed under addition.

Rational Numbers Class 8 MCQ Question 2.
Which of the following statements is false ?
(a) Natural numbers are closed under subtraction
(b) Whole numbers are not closed under subtraction
(c) Integers are closed under subtraction
(d) Rational numbers are closed under subtraction.

Class 8 Maths MCQ Chapter 1 Question 3.
Which of the following statements is true ?
(a) Natural numbers are closed under multiplication
(b) Whole numbers are not closed under multiplication
(c) Integers are not closed under multiplication
(d) Rational numbers are not closed under multiplication.

Rational Numbers MCQ Class 8 Question 4.
Which of the following statements is true ?
(a) Natural numbers are closed under division
(b) Whole numbers are not closed under division
(c) Integers are closed under division
(d) Rational numbers are closed under division.

Class 8 Math Chapter 1 MCQ Question 5.
Which of the following statements is false ?
(a) Natural numbers are commutative for addition
(b) Whole numbers are commutative for addition
(c) Integers are not commutative for addition
(d) Rational numbers are commutative for addition.

Class 8 Maths Ch 1 MCQ Question 6.
Which of the following statements is true ?
(a) Natural numbers are commutative for subtraction
(b) Whole numbers are commutative for subtraction
(c) Integers are commutative for subtraction
(d) Rational numbers are not commutative for subtraction.

MCQ On Rational Numbers For Class 8 Question 7.
Which of the following statements is false ?
(a) Natural numbers are commutative for multiplication
(b) Whole numbers are commutative for multiplication
(c) Integers are not commutative for multiplication
(d) Rational numbers are commutative for multiplication.

MCQ Class 8 Maths Chapter 1 Question 8.
Which of the following statements is true ?
(a) Natural numbers are commutative for division
(b) Whole numbers are not commutative for division
(c) Integers are commutative for division
(d) Rational numbers are commutative for division.

MCQ Questions For Class 8 Maths Chapter 1 With Answers Question 9.
Which of the following statements is true ?
(a) Natural numbers are associative for addition
(b) Whole numbers are not associative for addition
(c) Integers are not associative for addition
(d ) Rational numbers are not associative for addition.

MCQ Questions For Class 8 Maths Chapter 1 Question 10.
Which of the following statements is true ?
(a) Natural numbers are associative for subtraction
(b) Whole numbers are not associative for subtraction
(c) Integers are associative for subtraction
(d) Rational numbers are associative for subtraction.

Maths Class 8 Chapter 1 MCQ Question 11.
Which of the following statements is true ?
(a) Natural numbers are not associative for multiplication
(b) Whole numbers are not associative for multiplication
(c) Integers are associative for multiplication
(d) Rational numbers are not associative for multiplication.

Ch 1 Maths Class 8 MCQ Question 12.
Which of the following statements is true ?
(a) Natural numbers are associative for division
(b) Whole numbers are associative for division
(c) Integers are associative for division
(d) Rational numbers are not associative for division.

Class 8 Chapter 1 Maths MCQ Question 13.
0 is not
(a) a natural number
(b) a whole number
(c) an integer
(d) a rational number.

Class 8 Rational Numbers MCQ Question 14.
$$\frac{1}{2}$$ is 2
(a) a natural number
(b) a whole number
(c) an integer
(d) a rational number.

MCQ Of Rational Numbers Class 8 Question 15.
a + b = b + a is called
(d) none of these.

Question 16.
a × b = b × a is called
(b) commutative law for multiplication
id) associative law for multiplication.

Question 17.
(a + b) + c = a + (b + c) is called
(a) commutative law for multiplication
id) associative law for multiplication.

Question 18.
a × (b × c) = (a × b) × c is called
(b) associative law for multiplication
(d) commutative law for multiplication.

Question 19.
a(b + c) = ab + ac is called
(a) commutative law
(b) associative law
(c) distributive law
(d) none of these.

Question 20.
The additive identity for rational numbers is
(a) 1
(b) -1
(c) 0
(d) none of these.

Question 21.
The multiplicative identity for rational numbers is
(a) -1
(b) 1
(c) 0
(d) none of these.

Question 22.
The additive inverse of $$\frac{2}{3}$$ is
(a) –$$\frac{2}{3}$$
(b) $$\frac{3}{2}$$
(c) –$$\frac{3}{2}$$
(d) 1

(d) 1
Question 23.
The additive inverse of –$$\frac{3}{4}$$ is
(a) –$$\frac{3}{4}$$
(b) 1
(c) 0
(d) $$\frac{3}{4}$$

Question 24.
The multiplicative inverse of $$\frac{1}{2}$$ is
(a) 1
(b) -1
(c) 2
(d) 0

Question 25.
The multiplicative inverse of –$$\frac{2}{5}$$ is
(a) –$$\frac{2}{5}$$
(b) –$$\frac{5}{2}$$
(c) $$\frac{5}{2}$$
(d) 1

Question 26.
The multiplicative inverse of 1 is
(a) 0
(b) -1
(c) 1
(d) none of these.

Question 27.
The multiplicative inverse of -1 is
(a) 0
(b) -1
(c) 1
(d) none of these.

Question 28.
How many rational numbers are there between any two given rational numbers?
(a) Only one
(b) Only two
(c) Countless
(d) Nothing can be said.

Question 29.
The negative of 2 is
(a) 2
(b) $$\frac{1}{2}$$
(c) -2
(d) –$$\frac{1}{2}$$

Question 30.
The negative of -2 is
(a) -2
(b) 2
(c) –$$\frac{1}{2}$$
(d) $$\frac{1}{2}$$

Question 31.
If a and b are two rational numbers, then
(a) $$\frac{a+b}{2}$$ < a
(b) $$\frac{a+b}{2}$$ < b
(c) $$\frac{a+b}{2}$$ = a
(d) $$\frac{a+b}{2}$$ > b

Question 32.
The rational number that does not have a reciprocal is
(a) 0
(b) 1
(c) -1
(d) $$\frac{1}{2}$$

Question 33.
The rational number which is equal to its negative is
(a) 0
(b) -1
(c) 1
(d) $$\frac{1}{2}$$

Question 34.
The reciprocal of $$\frac{1}{x}$$ (x ≠ 0) is
(a) x
(b) $$\frac{1}{x}$$
(c) 1
(d) 0

Question 35.
The reciprocal of a positive rational number is
(a) a positive rational number
(b) a negative rational number
(c) 0
(d) 1.

Question 36.
The reciprocal of a negative rational number is
(a) a positive rational number
(b) a negative rational number
(c) 0
(d) -1