Class 10 · Science · 12 experiments
Pick an experiment to enter the virtual lab.
NCERT Activity 1.1: Clean a magnesium ribbon with sandpaper, hold it with tongs, ignite over a burner. Watch the dazzling white flame and the white MgO ash. Combination + oxidation reaction.
NCERT Activity 1.2: Zn granules + dilute HCl → ZnCl₂ + H₂↑. Brisk effervescence, 'pop' sound test, exothermic displacement reaction.
NCERT Activity 1.3: CaO + H₂O → Ca(OH)₂. Vigorous exothermic combination reaction. Slaked lime suspension turns red litmus blue.
NCERT Activity 1.4: 2FeSO₄ → Fe₂O₃ + SO₂ + SO₃. Green crystals turn reddish-brown; smell of burning sulphur. Thermal decomposition.
NCERT Electrolytic Decomposition: 2H₂O → 2H₂↑ + O₂↑. Acidulated water splits into H₂ (cathode) and O₂ (anode) in a 2:1 volume ratio. Pop test + glowing splint confirm.
NCERT Activity 1.5: 2Pb(NO₃)₂ → 2PbO + 4NO₂ + O₂. White crystals → brown NO₂ fumes + yellow PbO residue. Thermal decomposition.
NCERT Activity 1.6: 2AgCl → 2Ag + Cl₂. White powder turns grey in sunlight. Photolytic decomposition — basis of black-and-white photography.
NCERT Activity 1.7: Fe + CuSO₄ → FeSO₄ + Cu. Blue solution fades to green, brown Cu deposit on the iron nail. Displacement reaction.
NCERT Activity 1.8: Pb(NO₃)₂ + 2KI → PbI₂↓ + 2KNO₃. Bright yellow precipitate of lead iodide forms instantly. Double displacement reaction.
NCERT Activity 1.9: Na₂SO₄ + BaCl₂ → BaSO₄↓ + 2NaCl. Heavy white precipitate of barium sulphate forms instantly. Double displacement reaction.
NCERT Activity 1.10: CuO + H₂ → Cu + H₂O. Black powder turns red-brown; water droplets form. CuO reduced, H₂ oxidised — redox reaction.
5 mystery reactions, 4 triggers (🔥⚡☀️🔄). Identify each as Combination, Decomposition, Displacement, Double Displacement, or Redox — covering ALL 5 NCERT Class 10 Ch. 1 reaction types.