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CBSE Questions for Class 8 Maths Rational Numbers Quiz 2 - MCQExams.com

Which of the following statements is correct?
  • 0 is called the additive identity for rational numbers.
  • 1 is called the multiplicative identity for rational numbers.
  • The additive inverse of 0 is zero itself.
  • All the above
Choose the correct option for following statement.
Subtraction of rational numbers is not commutative.
  • True
  • False
  • Cannot be determined
  • None of these
x and 89 are the additive inverse of each other. Then the value of x is
  • 89
  • 49
  • 59
  • 79
The statement ''Rational numbers are closed under division'' is 
  • True
  • False
  • Cannot be determined
  • None
x is the multiplicative identity. The value of x is
  • 1
  • 2
  • 0
  • None
The rational number between 12 and 610 is
  • 14
  • 34
  • 2140
  • 33100
Find the value of x in 1310×x=1
  • 1013
  • 1310
  • 2310
  • 1023
Find the additive inverse 2425 is
  • 2425 
  • 2425 
  • 0
  • None
How many rational numbers are there between 1 and 0?
  • Infinite
  • 1000
  • 4990
  • None
The number of rational numbers between two given rational numbers is
  • Infinite
  • Finite
  • Two
  • One
If 4÷5=a and 5÷4=b, then which of the following is true?
  • a=b
  • ab
  • This is closure property
  • None of the above
Out of the following, identify which option states commutative property.
  • 2×(1+8)=(2×1)+(2×8)
  • 16×19=19×16
  • 1+(2+3)=(1+2)+3
  • All of the above
Which property is being used in the following 

 2347=47+23
  • Additive identity
  • Commutative property of addition
  • Commutative property of multipication
  • Associative property of addition
The number with which when 82 is multiplied product remains the same.
  • 82
  • 0
  • 182
  • 1
Commutative property in rational numbers is not satisfied with respect to which one of the following operations?
  • addition
  • subtraction
  • multiplication
  • division
Given that, 152×125=125×152
This is the best example for
  • associative property of multiplication
  • distributive property of multiplication
  • closure property of multiplication
  • commutative property of multiplication
Which of the following is/are correct?
  • 6÷3=2
  • 3÷6=12
  • 6÷33÷6
  • None of the above
Rational Numbers are
  • Closed under addition
  • Closed under substraction
  • Closed under multiplication
  • None of the above
For any rational number, multiplicative identity is 
  • 1
  • 0
  • 100
  • 11
Select the appropriate property:
a×b(c)=a×(c)b
  • commutative property of multiplication
  • identity property of multiplication
  • distributive property
  • associative property of multiplication
Rational numbers are closed under ..........
  • addition
  • subtraction
  • multiplication
  • all of the above
Rational numbers are commutative under .........
  • subtraction
  • multiplication
  • division
  • none of these
If zero is excluded from the set of rational numbers, then closure property holds true for the operations of 
  •  multiplication
  • division
  • subtraction
  • addition
The missing value in \dfrac {2}{3} \times \dfrac {5}{6} =..... \times \dfrac {2}{3} is
  • \dfrac {2}{3}
  • \dfrac {3}{2}
  • \dfrac {5}{6}
  • \dfrac {6}{5}
If .............. is excluded from the collection of rational numbers, then they are closed under division.
  • 2
  • 1
  • 0
  • -1
Which of the following statements is incorrect?
  • Rational numbers are not closed under addition and division.
  • Rational numbers are not closed under subtraction.
  • Rational numbers are not closed under division and addition.
  • Rational numbers are not closed under division.
Operation of ....... is not commutative for rational numbers.
  • addition
  • multiplication
  • division
  • none of these
Operation of ........... are commutative for rational numbers.
  • subtraction and division
  • multiplication and division
  • addition and subtraction
  • addition and multiplication
.............. are not commutative for rational numbers.
  • Subtraction and division
  • Multiplication and division
  • Multiplication and addition
  • Addition and subtraction
Find the missing value: \dfrac {-5}{9} \times \dfrac {6}{-1} = ..... \times \dfrac {-5}{9}
  • 6
  • -6
  • \dfrac {5}{9}
  • \dfrac {-5}{9}
0:0:1


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