CBSE  /  Class 8  /  Maths  /  Rational Numbers

  • 1. 
    The multiplicative identity for rational numbers is

  • -1
  • 1
  • 0
  • none of these.

  • 2. 
    The additive inverse of \(\frac{2}{3}\) is

  • -\(\frac{2}{3}\)
  • \(\frac{3}{2}\)
  • -\(\frac{3}{2}\)
  • 1

  • 3. 
    The additive inverse of -\(\frac{3}{4}\) is

  • -\(\frac{3}{4}\)
  • 1
  • 0
  • \(\frac{3}{4}\)

  • 4. 
    The multiplicative inverse of \(\frac{1}{2}\) is

  • 1
  • -1
  • 2
  • 0

  • 5. 
    The multiplicative inverse of -\(\frac{2}{5}\) is

  • -\(\frac{2}{5}\)
  • -\(\frac{5}{2}\)
  • \(\frac{5}{2}\)
  • 1

  • 6. 
    The multiplicative inverse of 1 is

  • 0
  • -1
  • 1
  • none of these.

  • 7. 
    The multiplicative inverse of -1 is

  • 0
  • -1
  • 1
  • none of these.

  • 8. 
    How many rational numbers are there between any two given rational numbers?

  • Only one
  • Only two
  • Countless
  • Nothing can be said.

  • 9. 
    The negative of 2 is

  • 2
  • \(\frac{1}{2}\)
  • -2
  • -\(\frac{1}{2}\)

  • 10. 
    The negative of -2 is

  • -2
  • 2
  • -\(\frac{1}{2}\)
  • \(\frac{1}{2}\)
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