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Ritik sir supremacy with Sunil bhaiya 😈😈😈

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⭐️Names & Formulas of Elements 🔺 Common salt = NaCl 🔺Baking soda = NaHCO₃ 🔺 Washing soda = Na₂CO₃       10H₂O 🔺Caustic Soda = NaOH 🔺Suhaga = Na₂B₄O₇ 10H₂O 🔺 Alum = K₂SO₄ Al₂(SO₄)₃      24H₂O 🔺Red medicine = KMnO₄ 🔺 Caustic Potash = KOH       Saltpeter = KNO₃ 🔺Bleaching powder =       Ca(OCl)Cl 🔺 lime water = Ca(OH)₂ 🔺Gypsum = CaSO₄ 2H₂O 🔺 Plaster of Paris = CaSO₄       ½H₂O 🔺Chalk = CaCO₃ 🔺Limestone = CaCO₃ 🔺 Marble = CaCO₃ 🔺Nausadar = NH4Cl 🔺Laughing gas = N₂O 🔺 Litharge = PbO 🔺 Galena = PbS 🔺Red vermilion = Pb₃O₄ 🔺White lead = 2PbCO₃ Pb(OH)₂ 🔺 Salt acid = HCl 🔺Shore's acid = HNO₃ 🔺Amalraj = HNO₃ + HCl (1 : 3) 🔺Dry ice = CO₂ 🔺Green Case = FeSO₄ 7H₂O 🔺 Horn Silver = AgCl 🔺 Heavy water = D₂O 🔺Producer gas = CO + N₂ 🔺Marsh gas = CH₄ 🔺Vinegar = CH₃COOH 🔺Gemaxine = C₆H₆Cl₆ 🔺Blue Case = CuSO₄ 5H₂O 🔺alcohol = C₂H₅OH 🔺 Mand = C₆H₁₀O₅ 🔺Grape juice = C₆H₁₂O₆ 🔺Sugar = C₁₂H₂₂O₁₁ 🔺Urea = NH₂CONH₂ Benzene = C₆H₆

☑️ Very Important formula 1. (α+в)²= α²+2αв+в² 2. (α+в)²= (α-в)²+4αв 3. (α-в)²= α²-2αв+в²        4. (α-в)²= (α+в)²-4αв 5. α² + в²= (α+в)² - 2αв. 6. α² + в²= (α-в)² + 2αв. 7. α²-в² =(α + в)(α - в) 8. 2(α² + в²) = (α+ в)² + (α - в)² 9. 4αв = (α + в)² -(α-в)² 10. αв ={(α+в)/2}²-{(α-в)/2}² 11. (α + в + ¢)² = α² + в² + ¢² + 2(αв + в¢ + ¢α) 12. (α + в)³ = α³ + 3α²в + 3αв² + в³ 13. (α + в)³ = α³ + в³ + 3αв(α + в) 14. (α-в)³=α³-3α²в+3αв²-в³ 15. α³ + в³ = (α + в) (α² -αв + в²) 16. α³ + в³ = (α+ в)³ -3αв(α+ в) 17. α³ -в³ = (α -в) (α² + αв + в²) 18. α³ -в³ = (α-в)³ + 3αв(α-в) ѕιη0° =0 ѕιη30° = 1/2 ѕιη45° = 1/√2 ѕιη60° = √3/2 ѕιη90° = 1 ➡️ ¢σѕ ιѕ σρρσѕιтє σƒ ѕιη тαη0° = 0 тαη30° = 1/√3 тαη45° = 1 тαη60° = √3 тαη90° = ∞ ➡️ ¢σт ιѕ σρρσѕιтє σƒ тαη ѕє¢0° = 1 ѕє¢30° = 2/√3 ѕє¢45° = √2 ѕє¢60° = 2 ѕє¢90° = ∞ ➡️ ¢σѕє¢ ιѕ σρρσѕιтє σƒ ѕє¢ 1. ѕιη2α = 2ѕιηα¢σѕα 2. ¢σѕ2α = ¢σѕ²α − ѕιη²α 3. ¢σѕ2α = 2¢σѕ²α − 1 4. ¢σѕ2α = 1 − ѕιη²α 5. 2ѕιη²α = 1 − ¢σѕ2α 6. 1 + ѕιη2α = (ѕιηα + ¢σѕα)² 7. 1 − ѕιη2α = (ѕιηα − ¢σѕα)² 8. тαη2α = 2тαηα / (1 − тαη²α) 9. ѕιη2α = 2тαηα / (1 + тαη²α) 10. ¢σѕ2α = (1 − тαη²α) / (1 + тαη²α) 11. 4ѕιη³α = 3ѕιηα − ѕιη3α 12. 4¢σѕ³α = 3¢σѕα + ¢σѕ3α » ѕιη²Θ+¢σѕ²Θ=1 » ѕє¢²Θ-тαη²Θ=1 » ¢σѕє¢²Θ-¢σт²Θ=1 » ѕιηΘ=1/¢σѕє¢Θ » ¢σѕє¢Θ=1/ѕιηΘ » ¢σѕΘ=1/ѕє¢Θ » ѕє¢Θ=1/¢σѕΘ » тαηΘ=1/¢σтΘ » ¢σтΘ=1/тαηΘ » тαηΘ=ѕιηΘ/¢σѕΘ

Products formed when metals react with oxygen in room temperature or low heating : Metal + Oxide -----> Metal Oxide 🔺 Potassium (K) - potassium oxide (K2O) 🔺 Sodium (Na) - sodium oxide (Na2O) 🔺 Calcium (Ca) - calcium oxide (CaO) 🔺 Magnesium (Mg) - Magnesium oxide (MgO) 🔺 Aluminium (Al) - Aluminium oxide (Al2O3) 🔺 Zinc (Zn) - Zinc Oxide (ZnO) 🔺 Iron (Fe) - Iron oxide (Fe3O4) 🔺 Lead (Pb) - Lead oxide (PbO) 🔺 Copper (Cu) - Copper oxide (CuO) 🔺 Silver, Gold and platinum - no reaction Colours of the products : 🔺 K2O - yellow 🔺 Na2O - white 🔺 CaO - white 🔺 MgO - white 🔺 Al2O3 - white 🔺 ZnO - white 🔺 Fe2O3 - black 🔺 PbO - yellow 🔺 CuO - black 🔺 silver, gold and platinum - no reaction Colour of flames when products are burned 🔺 K2O - lilac 🔺 Na2O - orange 🔺 CaO to CuO (calcium oxide to copper oxide) - no burning [ Reason - because of the protective layer formed ] 🔺 silver, gold and platinum - no reaction takes place

Colour of important compounds →→ (1)ZnSO4 (Zinc sulphate ) → Colourless (2) AgNO3  (Silver nitrate) → Colourless (3) AgCl (Silver chloride) → White (4) MgO (Magnesium oxide) → White (5) Al2 (SO4)3 (Aluminium Sulfate) →White an hydrous / colourless liquid (6) CuSO4 (copper(II) sulfate) → Blue (7) CuCl2 (Copper(II) chloride) → Bluish Green (8) FeSO4 (Ferrous sulfate) → Green (9) BaSO4 (Barium sulfate) → White (10) CuO (Copper(II) oxide) → Black (11) PbO (Lead(II) oxide) → Yellow (12) Pb (NO3)2(Lead nitrate)  →White (13) PbSO4 (Lead(II) sulfate) → White (14) PbI2 (Lead iodide) → Yellow (15) PbCl2 (Lead(II) chloride) → White (16) Fe2O3 (iron(III) oxide) → Brown (17) Ag Br (Silver bromide → Yellow (18) Ag (silver) → Grey (19) Zn Cl2 (Zinc chloride) → White (20) Cu2+ Cupric ion  → Blue (21) Fe2+ Ferrous Ion → Light Green (22) Fe3+ (Ferric Ion) → Yellowish Brown (23) Ni2+ (Nickel Ion) → Green (24) Cr3+ (Chromium Ion) → Green (24) Mn2+ (Manganese Ion) → Pink (25) Na2SO4 (Sodium sulfate) → White (26) K2SO4 (Potassium Sulfate) →White (27) MgCl2 (Magnesium Chloride) → White (28) KCl (Potassium chloride) → White (29) BaCl2 (Barium chloride) → White (30) NaCl (Sodium chloride) → White (31) AgNO3 (Silver nitrate) → White (32) CaCO3 (Calcium carbonate) → White

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