Atom and Molecule – Class 9 Science Chapter Explained Atom and Molecule notes with NCERT solution – Class 9 Science Chapter Explained Complete notes, NCERT solutions and practice questions Table of Contents Introduction to Atoms and Molecules Laws of Chemical Combination Law of Conservation of Mass Law of Constant Proportions Dalton’s Atomic Theory What is … Read more
Exercise 2.4 Solutions Exercise 2.4 Solutions 1. Use suitable identities to find the following products: (i) \((x + 4)(x + 10)\) Using the identity \((a + b)(a + c) = a^2 + a(b + c) + bc\): \[ (x + 4)(x + 10) = x^2 + x(4 + 10) + 4 \times 10 = x^2 … Read more
Polynomial Exercise 2.3 Latest NCERT Book Solutions with Practice Questions from RD Sharma Class 9 Maths: Polynomials (Exercise 2.2) Class 9 Mathematics: Polynomials Exercise 2.3 Solutions 1. Determine if \((x + 1)\) is a factor: (i) \(x^3 + x^2 + x + 1\) Step 1: Use Factor Theorem: If \((x + 1)\) is a factor, … Read more
Polynomials Exercise 2.2 Class 9th NCERT Solution (New NCERT BOOK 2025) With Practice Questions From RD sharma Class 9 Maths: Polynomials (Exercise 2.2) Class 9 Mathematics: Polynomials Exercise 2.2 Solutions 1. Find the value of \(5x – 4x^2 + 3\) at: (i) \(x = 0\) \(5(0) – 4(0)^2 + 3 = 0 – 0 + … Read more
Polynomials Exercise 2.1 Solutions with Practice Question from the RD Sharma Books with Latest NCERT Syllabus Class 9th Mathematics (Exercise 2.1) Polynomials Exercise 2.1 Solutions with Practice Question from the RD Sharma Books with Latest NCERT Syllabus Class 9th Mathematics Exercise 2.1 Solutions 1. Identify Polynomials in One Variable (i) \(4x^2 – 3x + 7\) … Read more
Class 9 Maths: Exponents and Radicals (Exercise 1.5) Class 9 Mathematics: Exponents and Radicals Class 9th maths exercise 1.5 1. Evaluate the Following: (i) \(64^{\frac{1}{2}}\) Step 1: Recognize that \(a^{\frac{1}{n}} = \sqrt[n]{a}\). Step 2: Apply to \(64^{\frac{1}{2}}\): \[ 64^{\frac{1}{2}} = \sqrt{64} = 8 \quad (\text{since } 8 \times 8 = 64) \] (ii) \(32^{\frac{1}{5}}\) Step … Read more
1. Visualizing 3.765 on the number line using successive magnification To visualize 3.765 on the number line, we use successive magnification to zoom in progressively and locate the exact position of the decimal number. Step 1: We start with a number line segment between 3.7 and 3.8, divided into 10 equal parts (3.71, 3.72, etc.). The … Read more
Class 9 Maths Chapter 1 Exercise 1.3 Solutions Class 9 Maths Chapter 1: Number Systems class 9th maths exercise 1.3 1. Decimal Forms and Expansion Types (i) \(\frac{36}{100} = 0.36\) (Terminating) (ii) \(\frac{1}{11} = 0.\overline{09}\) (Non-terminating repeating) (iii) \(4\frac{3}{8} = 4.375\) (Terminating) (iv) \(\frac{3}{13} = 0.\overline{230769}\) (Non-terminating repeating) (v) \(\frac{2}{11} = 0.\overline{18}\) (Non-terminating repeating) (vi) … Read more
Class 9 Maths Chapter 1 Exercise 1.2 Solutions Class 9 Maths Chapter 1: Number Systems class 9th maths exercise 1.2 Question 1: State True/False with justification (i) Every irrational number is a real number. True: Real numbers consist of both rational and irrational numbers (\(\mathbb{R} = \mathbb{Q} \cup \mathbb{I}\)) (ii) Every point on the number … Read more
Class 9 Maths Chapter 1 Exercise 1.1 Solutions Class 9 Maths Chapter 1: Number Systems Class 9th maths exercise 1.1 answers Question 1: Is zero a rational number? Can you write it in the form \(\frac{p}{q}\), where p and q are integers and q ≠ 0? Solution: Yes, zero is a rational number. We can … Read more