Class 9 Maths MCQ

1. What is the probability of a certain event? a) 0 b) 0.5 c) 1 d) Cannot be determined Click to View Answer and Explanation Answer: c) 1 Explanation: A certain event is an event that will always happen, so its probability is 1. 2. If an event cannot happen at all, its probability is: […]

1. What is the mode of the data set: 5, 7, 9, 7, 6, 5, 5? a) 5 b) 7 c) 6 d) 9 Click to View Answer and Explanation Answer: a) 5 Explanation: The mode is the number that appears most frequently. Here, '5' appears three times, more than any other number. 2. The

1. Which formula represents the volume of a cylinder? a) πr^2h b) 2πrh c) πr^2 + h d) 2πr + h Click to View Answer and Explanation Answer: a) πr^2h Explanation: The volume of a cylinder is given by the product of its base area (πr^2) and its height (h). 2. The surface area of

1. Heron's formula is used to find the area of a triangle given: a) Its height and base b) The three angles c) The three side lengths d) Its altitude and median Click to View Answer and Explanation Answer: c) The three side lengths Explanation: Heron's formula calculates the area of a triangle when all

1. To bisect an angle using a ruler and compass, you should draw: a) An arc with the angle's vertex as the center b) A circle with the angle's vertex as the center c) A straight line from the angle's vertex d) Two arcs from the sides of the angle intersecting each other Click to

1. The radius of a circle is: a) The longest chord b) Half the diameter c) Tangent to the circle d) A line joining the center to any point on the circle Click to View Answer and Explanation Answer: d) A line joining the center to any point on the circle Explanation: Radius is a

1. The area of a parallelogram is the product of its: a) Base and height b) Diagonals c) Adjacent sides d) Perimeter Click to View Answer and Explanation Answer: a) Base and height Explanation: Area of a parallelogram = Base x Height. 2. Triangles on the same base and between the same parallels have: a)

1. How many angles does a quadrilateral have? a) 2 b) 3 c) 4 d) 5 Click to View Answer and Explanation Answer: c) 4 Explanation: By definition, a quadrilateral is a polygon with four angles. 2. The sum of the angles of a quadrilateral is: a) 180° b) 270° c) 360° d) 450° Click

1. Which of the following cannot represent the sides of a triangle? a) 3 cm, 4 cm, 7 cm b) 5 cm, 12 cm, 13 cm c) 6 cm, 8 cm, 10 cm d) 7 cm, 24 cm, 25 cm Click to View Answer and Explanation Answer: a) 3 cm, 4 cm, 7 cm Explanation:

1. If two parallel lines are intersected by a transversal, then the alternate interior angles are: a) Complementary b) Supplementary c) Equal d) Unequal Click to View Answer and Explanation Answer: c) Equal Explanation: For two parallel lines cut by a transversal, the alternate interior angles are congruent or equal. 2. An angle that measures

1. How many postulates did Euclid propose in his book "Elements"? a) 3 b) 4 c) 5 d) 6 Click to View Answer and Explanation Answer: c) 5 Explanation: Euclid proposed five postulates in his book "Elements" that form the foundation of geometry. 2. A terminal point which does not extend is called: a) Line

1. The general form of a linear equation in two variables is: a) ax + by + c = 0 b) ax + by = c c) ax^2 + by^2 = c d) ax – by = 0 Click to View Answer and Explanation Answer: a) ax + by + c = 0 Explanation: A

1. Which quadrant does the point (-3, 4) lie in? a) I b) II c) III d) IV Click to View Answer and Explanation Answer: b) II Explanation: In the II quadrant, x is negative and y is positive. 2. The coordinates of the origin are: a) (1,1) b) (0,1) c) (1,0) d) (0,0) Click

1. What is the degree of the polynomial 3x^4 – 5x^3 + 7? a) 1 b) 3 c) 4 d) 7 Click to View Answer and Explanation Answer: c) 4 Explanation: The degree of a polynomial is the highest power of its variable. Here, it's 4. 2. What type of polynomial is 5x^2 – 3x

1. Which of the following is an irrational number? a) 1/7 b) 2.5 c) √2 d) 0.333… Click to View Answer and Explanation Answer: c) √2 Explanation: √2 cannot be expressed as a fraction, making it irrational. 2. Which number is both irrational and rational? a) 0.5 b) 3.14 c) 2.333… d) None of the