Class 9 Mathematics Most Repeated 75 MCQS

  Class 9 Mathematics Most Repeated 75 MCQS

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Looking for the most important and frequently asked MCQs in Class 9 Maths? Our expertly compiled “Class 9 Mathematics Most Repeated 75 MCQs” post is your ultimate exam preparation guide. These multiple-choice questions cover all key topics from the Class 9 math syllabus, including Algebra, Geometry, Mensuration, Number Systems, and more. Perfect for CBSE, ICSE, and other educational boards, this resource helps students practice, revise, and score higher. Whether you're preparing for school exams or class tests, these MCQs are designed to boost your confidence and accuracy.

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Class 9 Mathematics Most Repeated 75 MCQs with Answers (NCERT | CBSE | Exam Preparation)

These multiple-choice questions (MCQs) are perfect for Class 9 Maths exam preparation, quick revision, competitive tests, and CBSE board practice.

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Chapter 1: Number Systems

1. Which of the following is an irrational number?
   A. √2
   B. 2/3
   C. 0.25
   D. -3
   ✅ Answer: A

2. The decimal expansion of 1/7 is:
   A. Terminating
   B. Non-terminating, repeating
   C. Non-terminating, non-repeating
   D. Integer
   ✅ Answer: B

3. The value of √49 is:
   A. 5
   B. 6
   C. 7
   D. 8
   ✅ Answer: C

4. The number π (pi) is:
   A. Rational
   B. Integer
   C. Irrational
   D. Whole number
   ✅ Answer: C

5. Between any two rational numbers:
   A. No irrational number exists
   B. Only one irrational number exists
   C. Infinite irrational numbers exist
   D. Only one rational number exists
   ✅ Answer: C

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Chapter 2: Polynomials

6. A polynomial of degree 2 is called:
   A. Linear
   B. Cubic
   C. Quadratic
   D. Constant
   ✅ Answer: C

7. Which of these is a monomial?
   A. 3x + 2
   B. x²
   C. x + 1
   D. x² + x + 1
   ✅ Answer: B

8. If p(x) = x² + 2x + 1, then p(-1) = ?
   A. 0
   B. 2
   C. -1
   D. 1
   ✅ Answer: A

9. The zero of the polynomial f(x) = x – 3 is:
   A. 0
   B. -3
   C. 3
   D. 1
   ✅ Answer: C

10. The number of zeroes of a cubic polynomial is at most:
    A. 1
    B. 2
    C. 3
    D. 4
    ✅ Answer: C

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Chapter 3: Coordinate Geometry

11. The origin in the Cartesian plane is:
    A. (0, 1)
    B. (1, 0)
    C. (0, 0)
    D. (1, 1)
    ✅ Answer: C

12. The x-coordinate of a point on the y-axis is:
    A. 1
    B. 0
    C. 2
    D. y
    ✅ Answer: B

13. The point (3, 0) lies on:
    A. Y-axis
    B. X-axis
    C. Origin
    D. None
    ✅ Answer: B

14. The coordinates of point B in 2nd quadrant are:
    A. (+, +)
    B. (-, +)
    C. (-, -)
    D. (+, -)
    ✅ Answer: B

15. Coordinates of origin are:
    A. (1, 1)
    B. (0, 0)
    C. (-1, -1)
    D. (1, 0)
    ✅ Answer: B

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Chapter 4: Linear Equations in Two Variables

16. The graph of a linear equation in two variables is:
    A. A circle
    B. A line
    C. A curve
    D. A dot
    ✅ Answer: B

17. The equation 3x + 2y = 6 represents a:
    A. Point
    B. Line
    C. Curve
    D. Circle
    ✅ Answer: B

18. In the equation ax + by = c, a, b, and c are:
    A. Variables
    B. Constants
    C. Expressions
    D. None
    ✅ Answer: B

19. A linear equation in two variables has:
    A. One solution
    B. Infinite solutions
    C. No solution
    D. Two solutions
    ✅ Answer: B

20. Which of these is a solution to 2x + y = 5?
    A. (1, 1)
    B. (2, 1)
    C. (1, 3)
    D. (0, 5)
    ✅ Answer: C

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(…and so on for remaining chapters)

Chapters Covered:

• Number Systems

• Polynomials

• Coordinate Geometry

• Linear Equations

• Introduction to Euclid’s Geometry

• Lines and Angles

• Triangles

• Quadrilaterals

• Circles

• Heron’s Formula

• Surface Areas and Volumes

• Statistics

• Probability

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Great! Here’s the continuation of the “Class 9 Mathematics Most Repeated 75 MCQs” — now we’ll cover the remaining important chapters from the Class 9 NCERT syllabus. This includes Euclid’s Geometry, Lines and Angles, Triangles, Quadrilaterals, Circles, Mensuration, Statistics, and Probability.

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Chapter 5: Introduction to Euclid’s Geometry

21. Euclid is known as the:
    A. Father of Algebra
    B. Father of Geometry
    C. Father of Trigonometry
    D. Father of Calculus
    ✅ Answer: B

22. Euclid’s first axiom states that:
    A. Things equal to the same thing are equal to one another
    B. A point has a length
    C. A line can be bent
    D. Parallel lines meet
    ✅ Answer: A

23. A line segment has:
    A. Infinite length
    B. Two endpoints
    C. One endpoint
    D. No endpoint
    ✅ Answer: B

24. How many dimensions does a surface have?
    A. 0
    B. 1
    C. 2
    D. 3
    ✅ Answer: C

25. Euclid’s geometry is based on:
    A. 3 postulates
    B. 5 postulates
    C. 7 postulates
    D. 9 postulates
    ✅ Answer: B

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Chapter 6: Lines and Angles

26. The sum of angles on a straight line is:
    A. 180°
    B. 90°
    C. 360°
    D. 270°
    ✅ Answer: A

27. Vertically opposite angles are always:
    A. Unequal
    B. Equal
    C. Complementary
    D. Supplementary
    ✅ Answer: B

28. If two lines intersect, the number of angles formed is:
    A. 2
    B. 3
    C. 4
    D. 1
    ✅ Answer: C

29. The measure of an angle which is supplementary to 65° is:
    A. 125°
    B. 115°
    C. 105°
    D. 115°
    ✅ Answer: B

30. An acute angle is:
    A. More than 90°
    B. Equal to 90°
    C. Less than 90°
    D. More than 180°
    ✅ Answer: C

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Chapter 7: Triangles

31. The sum of all interior angles of a triangle is:
    A. 360°
    B. 180°
    C. 90°
    D. 270°
    ✅ Answer: B

32. In a right triangle, the longest side is called the:
    A. Altitude
    B. Hypotenuse
    C. Base
    D. Median
    ✅ Answer: B

33. If two angles of one triangle are equal to two angles of another triangle, the triangles are:
    A. Not similar
    B. Congruent
    C. Similar
    D. Different
    ✅ Answer: C

34. A triangle with all sides unequal is called:
    A. Equilateral
    B. Isosceles
    C. Scalene
    D. Acute
    ✅ Answer: C

35. SAS congruence condition stands for:
    A. Side-Angle-Side
    B. Side-Area-Side
    C. Sum-Angle-Side
    D. Side-Angle-Sum
    ✅ Answer: A

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Chapter 8: Quadrilaterals

36. A quadrilateral has how many sides?
    A. 3
    B. 4
    C. 5
    D. 6
    ✅ Answer: B

37. The sum of interior angles of a quadrilateral is:
    A. 360°
    B. 180°
    C. 270°
    D. 400°
    ✅ Answer: A

38. A parallelogram has:
    A. One pair of parallel sides
    B. All sides equal
    C. Two pairs of parallel sides
    D. All angles equal
    ✅ Answer: C

39. In a rectangle, opposite sides are:
    A. Equal
    B. Unequal
    C. Perpendicular
    D. Diagonal
    ✅ Answer: A

40. A square is a:
    A. Rhombus
    B. Parallelogram
    C. Rectangle
    D. All of the above
    ✅ Answer: D

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Chapter 9: Circles

41. A diameter is twice the:
    A. Radius
    B. Chord
    C. Tangent
    D. Arc
    ✅ Answer: A

42. A line that touches a circle at one point is called:
    A. Chord
    B. Radius
    C. Diameter
    D. Tangent
    ✅ Answer: D

43. The longest chord of a circle is:
    A. Radius
    B. Arc
    C. Diameter
    D. Segment
    ✅ Answer: C

44. The region enclosed by an arc and the chord is called a:
    A. Sector
    B. Segment
    C. Circumference
    D. Radius
    ✅ Answer: B

45. A radius of a circle is always:
    A. Less than its diameter
    B. Greater than diameter
    C. Equal to diameter
    D. None
    ✅ Answer: A

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Chapter 10: Heron’s Formula

46. Heron’s formula is used to find:
    A. Area of a square
    B. Area of a triangle
    C. Volume of a cube
    D. Perimeter of a rectangle
    ✅ Answer: B

47. Semi-perimeter (s) is given by:
    A. (a+b+c)/2
    B. ab/2
    C. a+b+c
    D. 2(a+b+c)
    ✅ Answer: A

48. Heron’s formula is used when:
    A. Height is given
    B. Sides are given
    C. Angle is given
    D. Radius is given
    ✅ Answer: B

49. If sides of triangle are 3, 4, 5 then semi-perimeter is:
    A. 6
    B. 12
    C. 10
    D. 7
    ✅ Answer: A

50. The area of a triangle with sides 5 cm, 12 cm, and 13 cm is:
    A. 30 cm²
    B. 26 cm²
    C. 60 cm²
    D. 78 cm²
    ✅ Answer: C

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Chapter 11: Surface Areas and Volumes

51. Volume of a cube =
    A. l × b × h
    B. 4a
    C. a³
    D. 2ab
    ✅ Answer: C

52. Surface area of a sphere =
    A. 2πr²
    B. 3πr²
    C. 4πr²
    D. πr²
    ✅ Answer: C

53. Volume of a cylinder =
    A. πr²h
    B. 2πrh
    C. πr²
    D. πrh
    ✅ Answer: A

54. Curved surface area of a cone =
    A. πrl
    B. πr²
    C. 2πr
    D. πrh
    ✅ Answer: A

55. Surface area of cube =
    A. 6a²
    B. 2a²
    C. 4a²
    D. a³
    ✅ Answer: A

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Chapter 12: Statistics

56. Mean is defined as:
    A. Largest - smallest
    B. Sum of values / Number of values
    C. Mode
    D. Frequency
    ✅ Answer: B

57. The middle value of data is called:
    A. Mean
    B. Median
    C. Mode
    D. Range
    ✅ Answer: B

58. Mode refers to:
    A. Most frequent value
    B. Average
    C. Middle value
    D. Total sum
    ✅ Answer: A

59. The range of 5, 8, 12, 3 is:
    A. 10
    B. 9
    C. 8
    D. 12
    ✅ Answer: C

60. If mean of 2, 4, 6 is calculated, the answer is:
    A. 5
    B. 4
    C. 6
    D. 2
    ✅ Answer: B

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Chapter 13: Probability

61. Probability of a sure event is:
    A. 0
    B. 1
    C. 0.5
    D. 2
    ✅ Answer: B

62. Probability of an impossible event is:
    A. 1
    B. 0
    C. 0.5
    D. 2
    ✅ Answer: B

63. Probability lies between:
    A. 0 and 1
    B. -1 and 0
    C. 1 and 2
    D. None
    ✅ Answer: A

64. When tossing a coin, the probability of getting head is:
    A. 0
    B. 1
    C. 1/2
    D. 2
    ✅ Answer: C

65. When rolling a dice, the probability of getting a number less than 7 is:
    A. 1
    B. 5/6
    C. 6/7
    D. 0
    ✅ Answer: A

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Additional Practice MCQs

66. A triangle with all angles less than 90° is:
    A. Right
    B. Obtuse
    C. Acute
    D. Scalene
    ✅ Answer: C

67. A rhombus is a parallelogram with:
    A. Four equal angles
    B. Four equal sides
    C. Unequal sides
    D. All angles different
    ✅ Answer: B

68. Chords of equal length in a circle subtend:
    A. Different angles
    B. Equal angles
    C. Straight lines
    D. None
    ✅ Answer: B

69. A polyhedron with 6 faces is a:
    A. Sphere
    B. Cube
    C. Cone
    D. Cylinder
    ✅ Answer: B

70. 2πr is the formula for:
    A. Area of circle
    B. Circumference
    C. Volume
    D. Radius
    ✅ Answer: B

71. The angle in a semicircle is:
    A. 60°
    B. 90°
    C. 180°
    D. 45°
    ✅ Answer: B

72. An isosceles triangle has:
    A. All sides equal
    B. Two sides equal
    C. No equal sides
    D. One side equal
    ✅ Answer: B

73. A cube has how many faces?
    A. 4
    B. 5
    C. 6
    D. 8
    ✅ Answer: C

74. In a histogram, the class intervals are represented on the:
    A. Y-axis
    B. X-axis
    C. Origin
    D. Center
    ✅ Answer: B

75. If the probability of an event A is 0.3, then the probability of not A is:
    A. 0.7
    B. 0.3
    C. 1
    D. 1.3
    ✅ Answer: A

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