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ICSE Class X Notes 2025 : Chemistry (Ambassador School, Dubai) Practical Chemistry

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PRACTICAL CHEMISTRY GASES Neutral Gases 1. H2O 1. White CuSO4 to blue. 2. blue cobalt chloride to pink. 2. H2 Produces a pop sound with a burning splinter. 3. O2 Rekindles a glowing splinter Acidic gases 4. CO2 1.Brisk effervescence. when passed through lime water, turns it milky. 2. No effect on acidified K2Cr2O7 and KMnO4 5. SO2 6. Cl2 7. HCl 8. H2S 9. NO2 1. turns acidified potassium permanganate from pink to colourless 2. turns acidified potassium dichromate from orange to green. Green colour caused by chromium sulphate 1. turns moist blue litmus red and bleaches it. 2.turns moist starch iodide paper blue black. 1.Gives dense white fumes with ammonia NH3 + HCl NH4Cl 2. Forms a white ppt. with AgNO3 AgNO3 + HCl AgCl + HNO3 AgCl is soluble in NH4OH insoluble in dilute acids Rotten egg smelling gas 1. turns moist lead acetate paper silvery black 2. forms a black ppt. with lead acetate solution. Reddish brown fumes Basic Gas 10. NH3 AMBASSADOR SCHOOL 1. Gives dense white fumes with HCl. 2. forms a pale blue ppt. with CuSO4 and deep blue solution in excess.

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