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Maths Assertion (A) & Reason (B) MCQ

Rational Numbers · CBSE STD 8 (CBSE - English Medium). 100 questions.

Questions · Page 2 of 2

Assertion (A) & Reason (B) MCQ

MCQ 511 Mark
Assertion (A): Whole numbers are not commutative for division
Reason (R): Rational numbers are commutative under addition and multiplication
  • ✓
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • D
    A is false but R is true
Answer
Correct option: A.
Both A and R are true and R is the correct explanation of A
A
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MCQ 521 Mark
Assertion (A): Whole numbers are not closed under subtraction
Reason (R): A rational number is a number that is in the form of $\frac{\text{p}}{\text{q}}$ where p and q are integers, and q is not equal to 0.
  • A
    Both A and R are true and R is the correct explanation of A
  • ✓
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • D
    A is false but R is true
Answer
Correct option: B.
Both A and R are true but R is not the correct explanation of A
B
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MCQ 531 Mark
Assertion (A): Whole numbers are not closed under multiplication
Reason (R): A rational number is a number that is in the form of $\frac{\text{p}}{\text{q}}$ where p and q are integers, and q is not equal to 0.
  • A
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • ✓
    A is false but R is true
Answer
Correct option: D.
A is false but R is true
D
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MCQ 541 Mark
Assertion (A): Whole numbers are not closed under division
Reason (R): A rational number is a number that is in the form of $\frac{\text{p}}{\text{q}}$ where p and q are integers, and q is not equal to 0.
  • A
    Both A and R are true and R is the correct explanation of A
  • ✓
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • D
    A is false but R is true
Answer
Correct option: B.
Both A and R are true but R is not the correct explanation of A
B
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MCQ 551 Mark
Assertion (A): Whole numbers are not associative for subtraction
Reason (R): The associative property states that the sum or the product of three or more numbers does not change if they are grouped in a different way.
  • ✓
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • D
    A is false but R is true
Answer
Correct option: A.
Both A and R are true and R is the correct explanation of A
A
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MCQ 561 Mark
Assertion (A): Whole numbers are not associative for multiplication
Reason (R): The associative property states that the sum or the product of three or more numbers does not change if they are grouped in a different way.
  • A
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • ✓
    A is false but R is true
Answer
Correct option: D.
A is false but R is true
D
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MCQ 571 Mark
Assertion (A): Whole numbers are not associative for addition
Reason (R): The associative property states that the sum or the product of three or more numbers does not change if they are grouped in a different way.
  • A
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • ✓
    A is false but R is true
Answer
Correct option: D.
A is false but R is true
D
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MCQ 581 Mark
Assertion (A): Whole numbers are commutative for subtraction
Reason (R): Rational numbers are commutative under addition and multiplication
  • A
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • ✓
    A is false but R is true
Answer
Correct option: D.
A is false but R is true
D
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MCQ 591 Mark
Assertion (A): Whole numbers are commutative for multiplication
Reason (R): Rational numbers are commutative under addition and multiplication
  • ✓
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • D
    A is false but R is true
Answer
Correct option: A.
Both A and R are true and R is the correct explanation of A
A
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MCQ 601 Mark
Assertion (A): Whole numbers are commutative for addition
Reason (R): Rational numbers are commutative under addition and multiplication
  • ✓
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • D
    A is false but R is true
Answer
Correct option: A.
Both A and R are true and R is the correct explanation of A
A
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MCQ 611 Mark
Assertion (A): Whole numbers are closed under addition
Reason (R): A rational number is a number that is in the form of $\frac{\text{p}}{\text{q}}$ where p and q are integers, and q is not equal to 0.
  • A
    Both A and R are true and R is the correct explanation of A
  • ✓
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • D
    A is false but R is true
Answer
Correct option: B.
Both A and R are true but R is not the correct explanation of A
B
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MCQ 621 Mark
Assertion (A): Whole numbers are associative for division
Reason (R): The associative property states that the sum or the product of three or more numbers does not change if they are grouped in a different way.
  • A
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • ✓
    A is false but R is true
Answer
Correct option: D.
A is false but R is true
D
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MCQ 631 Mark
Assertion (A): $\frac{1}{2}$ of 2 is a rational number
Reason (R): a rational number is a type of real numbers, which is in the form of $\frac{\text{p}}{\text{q}}$ where q is not equal to zero
  • ✓
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • D
    A is false but R is true
Answer
Correct option: A.
Both A and R are true and R is the correct explanation of A
A
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MCQ 641 Mark
Assertion (A): Rational numbers are not commutative for subtraction
Reason (R): Rational numbers are commutative under addition and multiplication
  • ✓
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • D
    A is false but R is true
Answer
Correct option: A.
Both A and R are true and R is the correct explanation of A
A
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MCQ 651 Mark
Assertion (A): Rational numbers are not closed under multiplication
Reason (R): A rational number is a number that is in the form of $\frac{\text{p}}{\text{q}}$ where p and q are integers, and q is not equal to 0.
  • A
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • ✓
    A is false but R is true
Answer
Correct option: D.
A is false but R is true
D
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MCQ 661 Mark
Assertion (A): Rational numbers are not closed under addition
Reason (R): A rational number is a number that is in the form of $\frac{\text{P}}{\text{q}}$, where p and q are integers, and q is not equal to 0.
  • A
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • ✓
    A is false but R is true
Answer
Correct option: D.
A is false but R is true
D
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MCQ 671 Mark
Assertion (A): Rational numbers are not associative for multiplication.
Reason (R): The associative property states that the sum or the product of three or more numbers does not change if they are grouped in a different way.
  • A
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • ✓
    A is false but R is true
Answer
Correct option: D.
A is false but R is true
D
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MCQ 681 Mark
Assertion (A): Rational numbers are not associative for division
Reason (R): The associative property states that the sum or the product of three or more numbers does not change if they are grouped in a different way.
  • ✓
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • D
    A is false but R is true
Answer
Correct option: A.
Both A and R are true and R is the correct explanation of A
A
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MCQ 691 Mark
Assertion (A): Rational numbers are not associative for addition
Reason (R): The associative property states that the sum or the product of three or more numbers does not change if they are grouped in a different way.
  • A
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • ✓
    A is false but R is true
Answer
Correct option: D.
A is false but R is true
D
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MCQ 701 Mark
Assertion (A): Rational numbers are commutative for multiplication
Reason (R): Rational numbers are commutative under addition and multiplication
  • ✓
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • D
    A is false but R is true
Answer
Correct option: A.
Both A and R are true and R is the correct explanation of A
A
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MCQ 711 Mark
Assertion (A): Rational numbers are commutative for division
Reason (R): Rational numbers are commutative under addition and multiplication
  • A
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • ✓
    A is false but R is true
Answer
Correct option: D.
A is false but R is true
D
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MCQ 721 Mark
Assertion (A): Rational numbers are commutative for addition.
Reason (R): Rational numbers are commutative under addition and multiplication
  • ✓
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • D
    A is false but R is true
Answer
Correct option: A.
Both A and R are true and R is the correct explanation of A
A
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MCQ 731 Mark
Assertion (A): Rational numbers are closed under subtraction
Reason (R): A rational number is a number that is in the form of $\frac{\text{p}}{\text{q}}$ where p and q are integers, and q is not equal to 0.
  • ✓
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • D
    A is false but R is true
Answer
Correct option: A.
Both A and R are true and R is the correct explanation of A
A
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MCQ 741 Mark
Assertion (A): Rational numbers are closed under division.
Reason (R): A rational number is a number that is in the form of $\frac{\text{p}}{\text{q}}$ where p and q are integers, and q is not equal to 0.
  • A
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • ✓
    A is false but R is true
Answer
Correct option: D.
A is false but R is true
D
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MCQ 751 Mark
Assertion (A): Rational numbers are associative for subtraction
Reason (R): The associative property states that the sum or the product of three or more numbers does not change if they are grouped in a different way.
  • A
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • ✓
    A is false but R is true
Answer
Correct option: D.
A is false but R is true
D
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MCQ 761 Mark
Assertion (A): Natural numbers are not associative for multiplication
Reason (R): The associative property states that the sum or the product of three or more numbers does not change if they are grouped in a different way.
  • A
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • ✓
    A is false but R is true
Answer
Correct option: D.
A is false but R is true
D
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MCQ 771 Mark
Assertion (A): Natural numbers are commutative for subtraction
Reason (R): Rational numbers are commutative under addition and multiplication
  • A
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • ✓
    A is false but R is true
Answer
Correct option: D.
A is false but R is true
D
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MCQ 781 Mark
Assertion (A): Natural numbers are commutative for multiplication
Reason (R): Rational numbers are commutative under addition and multiplication
  • ✓
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • D
    A is false but R is true
Answer
Correct option: A.
Both A and R are true and R is the correct explanation of A
A
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MCQ 791 Mark
Assertion (A): Natural numbers are commutative for division
Reason (R): Rational numbers are commutative under addition and multiplication
  • A
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • ✓
    A is false but R is true
Answer
Correct option: D.
A is false but R is true
D
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MCQ 801 Mark
Assertion (A): Natural numbers are commutative for addition
Reason (R): Rational numbers are commutative under addition and multiplication
  • ✓
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • D
    A is false but R is true
Answer
Correct option: A.
Both A and R are true and R is the correct explanation of A
A
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MCQ 811 Mark
Assertion (A): Natural numbers are closed under subtraction
Reason (R): A rational number is a number that is in the form of $\frac{\text{p}}{\text{q}}$ where p and q are integers, and q is not equal to 0.
  • A
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • ✓
    A is false but R is true
Answer
Correct option: D.
A is false but R is true
D
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MCQ 821 Mark
Assertion (A): Natural numbers are closed under multiplication
Reason (R): A rational number is a number that is in the form of $\frac{\text{p}}{\text{q}}$ where p and q are integers, and q is not equal to 0.
  • A
    Both A and R are true and R is the correct explanation of A
  • ✓
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • D
    A is false but R is true
Answer
Correct option: B.
Both A and R are true but R is not the correct explanation of A
B
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MCQ 831 Mark
Assertion (A): Natural numbers are closed under division
Reason (R): A rational number is a number that is in the form of $\frac{\text{p}}{\text{q}}$ where p and q are integers, and q is not equal to 0.
  • A
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • ✓
    A is false but R is true
Answer
Correct option: D.
A is false but R is true
D
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MCQ 841 Mark
Assertion (A): Natural numbers are closed under addition
Reason (R): A rational number is a number that is in the form of $\frac{\text{p}}{\text{q}}$ where p and q are integers, and q is not equal to 0.
  • A
    Both A and R are true and R is the correct explanation of A
  • ✓
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • D
    A is false but R is true
Answer
Correct option: B.
Both A and R are true but R is not the correct explanation of A
B
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MCQ 851 Mark
Assertion (A): Natural numbers are associative for subtraction
Reason (R): The associative property states that the sum or the product of three or more numbers does not change if they are grouped in a different way.
  • A
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • ✓
    A is false but R is true
Answer
Correct option: D.
A is false but R is true
D
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MCQ 861 Mark
Assertion (A): Natural numbers are associative for division
Reason (R): The associative property states that the sum or the product of three or more numbers does not change if they are grouped in a different way.
  • A
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • ✓
    A is false but R is true
Answer
Correct option: D.
A is false but R is true
D
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MCQ 871 Mark
Assertion (A): Integers are not commutative for multiplication
Reason (R): Rational numbers are commutative under addition and multiplication
  • A
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • ✓
    A is false but R is true
Answer
Correct option: D.
A is false but R is true
D
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MCQ 881 Mark
Assertion (A): Integers are not commutative for addition
Reason (R): Rational numbers are commutative under addition and multiplication
  • A
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • ✓
    A is false but R is true
Answer
Correct option: D.
A is false but R is true
D
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MCQ 891 Mark
Assertion (A): Integers are not associative for addition
Reason (R): The associative property states that the sum or the product of three or more numbers does not change if they are grouped in a different way.
  • A
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • ✓
    A is false but R is true
Answer
Correct option: D.
A is false but R is true
D
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MCQ 901 Mark
Assertion (A): Integers are commutative for subtraction
Reason (R): Rational numbers are commutative under addition and multiplication
  • A
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • ✓
    A is false but R is true
Answer
Correct option: D.
A is false but R is true
D
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MCQ 911 Mark
Assertion (A): Integers are associative for subtraction
Reason (R): The associative property states that the sum or the product of three or more numbers does not change if they are grouped in a different way.
  • A
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • ✓
    A is false but R is true
Answer
Correct option: D.
A is false but R is true
D
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MCQ 921 Mark
Assertion (A): Integers are associative for multiplication
Reason (R): The associative property states that the sum or the product of three or more numbers does not change if they are grouped in a different way.
  • ✓
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • D
    A is false but R is true
Answer
Correct option: A.
Both A and R are true and R is the correct explanation of A
A
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MCQ 931 Mark
Assertion (A): Integers are associative for division
Reason (R): The associative property states that the sum or the product of three or more numbers does not change if they are grouped in a different way.
  • A
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • ✓
    A is false but R is true
Answer
Correct option: D.
A is false but R is true
D
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MCQ 941 Mark
Assertion (A): (a + b) + c = a + (b + c) is called
Reason (R): The associative laws state that when you add or multiply any three real numbers, the grouping (or association) of the numbers does not affect the result
  • ✓
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • D
    A is false but R is true
Answer
Correct option: A.
Both A and R are true and R is the correct explanation of A
A
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MCQ 951 Mark
Assertion (A): a × (b × c) = (a × b) × c is called associative law for multiplication
Reason (R): The associative laws state that when you add or multiply any three real numbers, the grouping (or association) of the numbers does not affect the result.
  • ✓
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • D
    A is false but R is true
Answer
Correct option: A.
Both A and R are true and R is the correct explanation of A
A
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MCQ 961 Mark
Assertion (A): a × b = b × a is called commutative law for multiplication
Reason (R): Rational numbers are commutative under addition and multiplication
  • A
    Both A and R are true and R is the correct explanation of A
  • ✓
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • D
    A is false but R is true
Answer
Correct option: B.
Both A and R are true but R is not the correct explanation of A
B
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MCQ 971 Mark
Assertion (A): 0 is not a rational number
Reason (R): a rational number is a type of real numbers, which is in the form of $\frac{\text{p}}{\text{q}}$ where q is not equal to zero.
  • A
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • ✓
    A is false but R is true
Answer
Correct option: D.
A is false but R is true
D
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MCQ 981 Mark
Assertion (A): Natural numbers are associative for addition
Reason (R): The associative property states that the sum or the product of three or more numbers does not change if they are grouped in a different way.
  • ✓
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • D
    A is false but R is true
Answer
Correct option: A.
Both A and R are true and R is the correct explanation of A
A
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MCQ 991 Mark
Assertion (A): Integers are commutative for division
Reason (R): Rational numbers are commutative under addition and multiplication
  • A
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • ✓
    A is false but R is true
Answer
Correct option: D.
A is false but R is true
D
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MCQ 1001 Mark
Assertion (A): a + b = b + a is called commutative law of addition
Reason (R): Rational numbers are commutative under addition and multiplication
  • A
    Both A and R are true and R is the correct explanation of A
  • ✓
    Both A and R are true but R is not the correct explanation of A
  • C
    A is true but R is false
  • D
    A is false but R is true
Answer
Correct option: B.
Both A and R are true but R is not the correct explanation of A
B
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