MCQ Questions for Class 9 Maths with Answers
MCQ questions for Class 9 maths with answers: 15 questions picked to match the syllabus and age level. Play online, see your score instantly, and use the answer key for revision.
15 questionsMixed (easy → hard)~3 minNo timer
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These MCQ questions for class 9 maths with answers cover the core topics of Class 9 mathematics: number systems, polynomials, coordinate geometry, linear equations in two variables, Euclid's geometry, lines and angles, triangles, quadrilaterals, circles, Heron's formula, surface areas and volumes, and statistics.
The 15 questions start with concept checks, such as which quadrant a point lies in or the class mark of an interval, and move to questions that need a line or two of working: the Factor Theorem, algebraic identities, cyclic quadrilaterals, hemispheres and Heron's formula. Every answer shows the method briefly, so this class 9 maths MCQ set also works as a quick lesson on the steps that are easy to forget.
Students can use the maths quiz for class 9 to test themselves after finishing a chapter, revise before unit tests, or build speed for objective sections. Teachers can project it as a starter activity and ask students to explain each answer aloud. Keep rough paper handy, and try to solve before reading the options so the choices do not guide you.
Fun fact: the 13-14-15 triangle is a favourite in maths contests because Heron's formula gives a whole-number area, 84 cm², even though its sides are all different.
Maths Quiz for Class 9 questions with answers
Show answers
Every rational number is also a:
- Natural number
- Real number
- Whole number
- Integer
Answer: Real number. Rational and irrational numbers together make up the real numbers. A rational number such as 1/2 is not a natural number, whole number or integer.
In which quadrant does the point (-3, 5) lie?
- Quadrant II
- Quadrant I
- Quadrant III
- Quadrant IV
Answer: Quadrant II. The x-coordinate is negative and the y-coordinate is positive, which places the point in Quadrant II.
Two angles form a linear pair. If one of them is 70°, what is the other?
- 20°
- 110°
- 90°
- 290°
Answer: 110°. Angles in a linear pair add up to 180°, so the other angle is 180° - 70° = 110°.
What is the class mark of the class interval 10-20?
- 30
- 10
- 20
- 15
Answer: 15. Class mark = (lower limit + upper limit) / 2 = (10 + 20) / 2 = 15.
What is the degree of the polynomial 2 - y² - y³ + 2y⁸?
- 8
- 2
- 3
- 13
Answer: 8. The degree is the highest power of the variable, which is 8 in 2y⁸.
The decimal expansion of 1/7 is:
- Exactly 0.14
- Terminating
- Non-terminating and non-repeating
- Non-terminating and repeating
Answer: Non-terminating and repeating. 1/7 = 0.142857142857..., where the block 142857 repeats forever. Every rational number has a terminating or repeating decimal.
How many solutions does a linear equation in two variables, such as 2x + y = 7, have?
- None
- Exactly one
- Exactly two
- Infinitely many
Answer: Infinitely many. For every value of x you choose, you can find a matching y, so there are infinitely many solutions. All of them lie on a straight line.
What is the name of Euclid's famous book on geometry?
- Lilavati
- Principia
- Elements
- Arithmetica
Answer: Elements. Euclid collected the geometry of his time in the Elements, written around 300 BC in 13 books. Lilavati is a maths text by Bhaskaracharya.
Which of these is NOT a rule for proving two triangles congruent?
- ASA
- SAS
- SSA
- SSS
Answer: SSA. Two sides and a non-included angle (SSA) do not fix a unique triangle. The valid rules are SAS, ASA, AAS, SSS and RHS.
Which statement is always true for the diagonals of a parallelogram?
- They are perpendicular
- They are equal in length
- They bisect each other
- They bisect the angles
Answer: They bisect each other. The diagonals of every parallelogram bisect each other. They are equal only in a rectangle and perpendicular only in a rhombus.
Using a suitable identity, what is the value of 99²?
- 9901
- 9891
- 9810
- 9801
Answer: 9801. Write 99 as 100 - 1: (100 - 1)² = 10000 - 200 + 1 = 9801.
Using the Factor Theorem, which of these is a factor of x³ + 3x² + 3x + 1?
- x + 2
- x + 1
- 2x + 1
- x + 3
Answer: x + 1. Put x = -1: -1 + 3 - 3 + 1 = 0, so x + 1 is a factor; in fact the polynomial is (x + 1)³. Putting x = -2, -1/2 or -3 gives -1, 1/8 or -8, not zero.
In a cyclic quadrilateral, one angle is 75°. What is the angle opposite to it?
- 75°
- 105°
- 15°
- 115°
Answer: 105°. Opposite angles of a cyclic quadrilateral add up to 180°, so the opposite angle is 180° - 75° = 105°.
What is the curved surface area of a hemisphere of radius 7 cm? (Take pi = 22/7)
- 462 cm²
- 154 cm²
- 308 cm²
- 616 cm²
Answer: 308 cm². Curved surface area = 2 x pi x r² = 2 x (22/7) x 49 = 308 cm². Adding the flat base gives the total, 462 cm².
Using Heron's formula, what is the area of a triangle with sides 13 cm, 14 cm and 15 cm?
- 84 cm²
- 96 cm²
- 72 cm²
- 168 cm²
Answer: 84 cm². Semi-perimeter s = 21, so area = square root of (21 x 8 x 7 x 6) = square root of 7056 = 84 cm².
Frequently asked questions
Where can I find Maths Quiz for Class 9 questions with answers?
On this page. Play the quiz for an instant score, then open the answer key to see all 15 class 9 maths MCQ questions with answers and a short working for each.
How many questions are in this Maths Quiz for Class 9 quiz?
The quiz has 15 multiple-choice questions with four options each, covering most core Class 9 maths topics. Expect to spend about ten minutes with rough work.
Can I play the Maths Quiz for Class 9 quiz online for free without signing up?
Yes. It is free, needs no login or sign-up, and works on phones, tablets and computers. You can replay it to beat your earlier score.
Are these MCQ questions for class 9 maths NCERT based?
They use the standard definitions, theorems and formulas from NCERT's Class 9 maths syllabus, such as the Factor Theorem, the congruence rules and Heron's formula. NCERT has brought in a new Class 9 maths textbook, Ganita Manjari, from the 2026-27 session, so check your school's chapter list as well. Where pi is needed, the question tells you to use 22/7.