NCERT SOLUTION || ch-3 || Atoms & Molecules Class 9 | Full Chapter Solved in Easiest Way!

Class 9th Science Chapter 3 – Atoms and Molecules (NCERT Exercise Complete Solution) Is lecture mein hum NCERT ki poori exercise ko step-by-step solve karenge, including: Identifying atoms & molecules Law of constant proportion Molecular formula likhna Ions & valency Questions based on mole concept NCERT In-text + Exercise ke saare numerical Is video ke baad aapko exercise ka ek bhi question difficult nahi लगेगा. DPP bhi diya gaya hai jisse aap practice kar ke full marks la sakte ho. Class 9 ke students ke liye perfect revision video! 👉 Download DPP (Practice Questions) – नीचे दिया हुआ है 👉 Comment में बताएं अगला chapter kaun sa chahiye? 👉 Video ko Like & Share जरूर करें! #class9science #atomsandmolecules #chapter3class9 #ncertsolutions #class9chemistry #farrrataPhysics #class9th #ncertclass9 #sciencechapter3 #class9exercise --- ⭐ DPP – Daily Practice Problems (DPP – 10 Questions) Atoms and Molecules – Class 9 Q1. Define atom and molecule with one example each. Q2. State the law of conservation of mass and give one numerical example. Q3. Why does hydrogen exist as H₂ and not H? Explain. Q4. Write the chemical formula of the following: (a) Magnesium oxide (b) Calcium hydroxide (c) Aluminium chloride (d) Sodium carbonate Q5. Calculate the molecular mass of: (a) CO₂ (b) Ca(OH)₂ Q6. If 16 g of oxygen combines with 2 g of hydrogen, what is the mass ratio? Q7. What is valency? Write the valency of sulphur, nitrogen, and aluminium. Q8. Give the difference between atom and ion with examples. Q9. Write the formula of the compound formed between: (a) Al³⁺ and O²⁻ (b) Ca²⁺ and Cl⁻ Q10. How many atoms are present in: (a) SO₂ (b) BaCl₂ (c) HNO