Please note the Board will conduct the annual scheme of assessment at the end of the Academic Session 2022-23
Class 9 Science
Deleted Chapters:
- DIVERSITY IN LIVING ORGANISMS
- NATURAL RESOURCES
- WHY DO WE FALL ILL?
Chapter: NATURAL RESOURCES will be taught in the class and students are encouraged to prepare a brief write up on any concept of this chapter in their Portfolio (internal assessment)
For Class 7 / Class 8 / Class 9
The worksheet will help you understand the basic definition of Rational and its properties.
Question 1: Recall that two circles are congruent if they have the same radii. Prove that equal chords of congruent circles subtend equal angles at their centres.
Answer:
Given: Circle C (A, r) and C (P, r) are two congruent circles such that BC = QR.
To prove: ∠BAC = ∠QPR
Choose the correct option from the choices given in each question.
Q1: Which one of the following is incorrect about polynomials?
(a) A monomial contains one non-zero term.
(b) A polynomial is an algebraic expression.
(c) Exponents of a polynomial can be irrational.
(d) Coefficients of a polynomial can be irrational.
*Typo in the graphic new = knew
Q1: A linear equation of two variables x and y can be represented as ax + by = c, where a, b, and c are:
(A) Rational numbers
(B) Irrational numbers
(C) Integers
(D) Real Numbers
Q2: The graph of the equation of the form y = kx is a line which?
(A) May pass through the origin.
(B) Always passes through the origin.
(C) Will not pass through origin
(D) Will be parallel to x-axis
Class 9 Maths - Important Identities
(a+b)² = a² + 2ab+ b²
(a–b)² = a² –2ab + b²
a² – b² = (a+b)(a–b)
Q1: Simplify $\sqrt[4]{32}$ ?
Answer:
$\sqrt[4]{32} = \left ( 32 \right )^{\frac{1}{4}} $
$= \left ( 2^5 \right )^{\frac{1}{4}}$
$ = \left ( 2^4 . 2^1 \right )^{\frac{1}{4}} $
$= \left ( 2^4 \right )^{\frac{1}{4}}.(2)^{\frac{1}{4}}$
$= 2.\sqrt[4]{2}$
Choose the correct option in each of the following questions:
Q1. Which of the following is a rational number?
(a) 2√3
(b) π
(c) 0
(d) √3 + 1
Q2. Every point on a number line represents
(a) a rational number
(b) a natural number
(c) an irrational number
(d) a real number
Learning is a continual process. To improve scores, the best way is to learn and practice. Solving question papers help students to evaluate their knowledge and familarise with different types of question patterns being asked in examination.
Eduvictors provides CBSE Previous Year Papers and Sample Question Papers for Class 9 Maths, Science, Social, English, Hindi and Sanskrit with/without solutions to help students in their board exam preparation.
1. CBSE New Pattern 15 Sample Paper Mathematics Class 9 for 2021 Exam with reduced Syllabus
Here attached the Maths Sample Question Paper (2020-2021).
Q1: ABCD is a parallelogram such that its diagonals are equal. What is the measure of ∠ABC?
Answer: Since diagonals are equal, it must be a rectangle or a square. ∴ ∠ABC = 90°
Q2: Is rhombus a kite or a parallelogram?
Answer: Both
Q3: In a parallelogram ABCD, if ∠C = 80° then what is the measure of ∠A?
Answer: In a parallelogram, opposite angles are equal, ∴ ∠A = ∠C = 80°
MCQs (Q1 - Q10)
Q1. The diameter of a circle is also a
(a) secant
(b) tangent
(c) radius
(d) chord
Q2. An equilateral triangle ABC is inscribed in a circle with centre O.The measure of ∠BOC is
(a) 110⁰
(b) 100⁰
(c) 120⁰
(d) 130⁰
CBSE Class 9 - Maths
1. Two angles are called adjacent angles, if
(i) they have the same vertex,
(ii) they have a common arm and
(iii) their non-common arms are on either side of the common arm.
2. Two adjacent angles are said to form a linear pair of angles, if their non-common arms are two opposite rays.
