CBSE  /  Class 8  /  Maths  /  Algebraic Expressions and Identities

  • 1. 
    A polynomial contains _______ number of terms:

  • One
  • Two
  • Three
  • Any

  • 2. 
    The product of 4x and 0 is:

  • 4x
  • 4
  • 0
  • None of the above

  • 3. 
    In which of the following, the two expressions are like terms?

  • 7x and 7y
  • 7x and 9x
  • 7x and 7x²
  • 7x and 7xy

  • 4. 
    The number of like terms in
    abc, -abc, -bca, acb, bac, \(\frac{1}{2}\)cab is

  • 6
  • 4
  • 3
  • 2

  • 5. 
    The number of like terms in
    \(\frac{1}{4}\)a²bc, - \(\frac{2}{3}\)bca², \(\frac{2}{5}\) ba²c, - \(\frac{1}{2}\)cba² is

  • 4
  • 3
  • 2
  • 6

  • 6. 
    The product of x², - x³, - x4 is

  • x9
  • x5
  • x7
  • x6

  • 7. 
    If we add, 7xy + 5yz - 3zx, 4yz + 9zx - 4y and -3xz + 5x - 2xy, then the answer is:

  • 5xy + 9yz + 3zx + 5x - 4y
  • 5xy - 9yz + 3zx - 5x - 4y
  • 5xy + 10yz + 3zx + 15x - 4y
  • 5xy + 10yz + 3zx + 5x - 6y

  • 8. 
    If we subtract 4a - 7ab + 3b + 12 from 12a - 9ab + 5b - 3, then the answer is:

  • 8a + 2ab + 2b + 15
  • 8a + 2ab + 2b - 15
  • 8a - 2ab + 2b - 15
  • 8a - 2ab - 2b - 15

  • 9. 
    If we multiply 5x and (-4xyz), then we get:

  • 20x²yz
  • -20x²yz
  • x²yz
  • -2xyz

  • 10. 
    The volume of a rectangle with length, breadth and height as 5x, 3x² and 7x4 respectively is:

  • 105x7
  • 105x²
  • 105x4
  • 105x
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