Practice Question and Answer

Q:

If the area of a circle is 154 m2 then its radius will be 

1442 0

  • 1
    7 cm.
    Correct
    Wrong
  • 2
    5 cm
    Correct
    Wrong
  • 3
    14 cm.
    Correct
    Wrong
  • 4
    3.5 cm
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 1. "7 cm."

Q:

The perimeter of a right-angled triangle is 60 cm, and its hypotenuse is 26 cm. Find its area? 

1483 0

  • 1
    $$112 cm^2$$
    Correct
    Wrong
  • 2
    $$120 cm^2$$
    Correct
    Wrong
  • 3
    $$136 cm^2$$
    Correct
    Wrong
  • 4
    $$150 cm^2$$
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 2. "$$120 cm^2$$"

Q:

(x+2y) (x2 + 4y2 – 2xy) equal to- 

1750 0

  • 1
    $$5x^3 +8y^3$$
    Correct
    Wrong
  • 2
    $$x^3 +5y^3$$
    Correct
    Wrong
  • 3
    $$x^3 +8y^3$$
    Correct
    Wrong
  • 4
    $$2x^3 +3y^3$$
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 3. "$$x^3 +8y^3$$"

Q:

If the numerator of a fraction is increased by 250% and the denominator is increased by 400%. The resultant fraction is7/19 . What is the original fraction?

1519 0

  • 1
    5/8
    Correct
    Wrong
  • 2
    10/19
    Correct
    Wrong
  • 3
    18/23
    Correct
    Wrong
  • 4
    15/17
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 2. "10/19 "

Q:

Which polymer is used to manufacture the cabinets of radio and TV? 

1730 0

  • 1
    Polyvinyl Chloride
    Correct
    Wrong
  • 2
    Polystyrene
    Correct
    Wrong
  • 3
    Bakelite
    Correct
    Wrong
  • 4
    Nylon
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 2. "Polystyrene"

Q:

The catalyst is a substance through which the rates of chemical reactions ________.

1609 0

  • 1
    Decreases
    Correct
    Wrong
  • 2
    Changes
    Correct
    Wrong
  • 3
    Increases
    Correct
    Wrong
  • 4
    None of these
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 3. "Increases "

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully