Quiz - 1 Class - 9 Chapter - Number System

15 Questions | Total Attempts: 594

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Quiz - 1 Class - 9 Chapter - Number System


Questions and Answers
  • 1. 
    0.1 can be represented by
    • A. 

      1/10

    • B. 

      1/100

    • C. 

      1/1000

    • D. 

      1/10000

  • 2. 
    Which one of the following is a correct statement?
    • A. 

      Decimal expansion of a rational number is terminating.

    • B. 

      Decimal expansion of a rational number is non-terminating.

    • C. 

      Decimal expansion of an irrational number is terminating.

    • D. 

      Decimal expansion of an irrational number is non- terminating and non- repeating.

  • 3. 
    Which one of the following statements is true?
    • A. 

      The sum of two irrational numbers is always an irrational number.

    • B. 

      The sum of two irrational numbers is always a rational number.

    • C. 

      The sum of two irrational numbers may be a rational number or an irrational number.

    • D. 

      The sum of two irrational numbers is always an integer.

  • 4. 
    Which of the following is a correct statement ?
    • A. 

      Product of two irrational numbers is always irrational.

    • B. 

      Product of a rational and an irrational number is a always irrational.

    • C. 

      Sum of two irrational numbers can never be irrational. 

    • D. 

      Sum of an integer and a rational number can never be an integer.

  • 5. 
    Which of these is greatest number?
    • A. 

      0.1

    • B. 

      0.01

    • C. 

      0.001

    • D. 

      0.0001

  • 6. 
    The number 0.318564318564318564.......... is 
    • A. 

      A natural number 

    • B. 

      An integer

    • C. 

      A rational number 

    • D. 

      An irrational number 

  • 7. 
     if n is a natural number then, √n is always
    • A. 

      Always a natural number 

    • B. 

      Always an irrational number

    • C. 

      Always an irrational number

    • D. 

      Sometimes a natural number and sometimes an irrational number

  • 8. 
    Which of the following numbers can be represented as non-terminating, repeating decimals?
    • A. 

      39/24

    • B. 

      3/16

    • C. 

      3/11

    • D. 

      137/25

  • 9. 
    Every point on a number line represents
    • A. 

      A unique real number

    • B. 

      A natural number

    • C. 

      A rational number

    • D. 

      An irrational number

  • 10. 
    The number 1.272727...... in the form p/q, where p and q are integers and q is not zero, is
    • A. 

      14/9

    • B. 

      14/11

    • C. 

      14/13

    • D. 

      14/15

  • 11. 
    The number 0.333333...... in the form p/q, where p and q are integrals and q is not zero, is 
    • A. 

      33/100

    • B. 

      3/10

    • C. 

      1/3

    • D. 

      3/100

  • 12. 
    The smallest rational number by which 1/3 should be multiplied so that its decimal expansion terminates after one place of decimal, is
    • A. 

      1/10

    • B. 

      3/10

    • C. 

      3

    • D. 

      30

  • 13. 
    0.32222222...... when expressed in the form p/q( where p and q are integers and q is not zero)
    • A. 

      8/25

    • B. 

      29/90

    • C. 

      32/99

    • D. 

      32/199

  • 14. 
    Which of the following is irrational ?
    • A. 

      0.15

    • B. 

      0.01516

    • C. 

      0.151615161516.....

    • D. 

      0.50155001500015....

  • 15. 
    The value of 0.232323..... + 0.222222........ is 
    • A. 

      0.45454545.....

    • B. 

      0.43434343

    • C. 

      0.45

    • D. 

      0.43

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