SEBA Class X Science Balance Chemical equation MCQ
{
"questions": [
{
"question": "Balance the equation: H₂ + O₂ → H₂O",
"options": ["H₂ + 2O₂ → H₂O₂", "4H₂ + O₂ → 4H₂O", "2H₂ + O₂ → 2H₂O", "H₂ + O₂ → H₂O"],
"answer": 2
},
{
"question": "Balance the equation: N₂ + H₂ → NH₃",
"options": ["N₂ + 2H₂ → 2NH₃", "2N₂ + 3H₂ → 2NH₃", "N₂ + 3H₂ → 2NH₃", "N₂ + H₂ → NH₃"],
"answer": 2
},
{
"question": "Balance the equation: Fe + O₂ → Fe₂O₃",
"options": ["4Fe + 3O₂ → 2Fe₂O₃", "2Fe + O₂ → Fe₂O₃", "3Fe + O₂ → Fe₃O₄", "Fe + O₂ → FeO"],
"answer": 0
},
{
"question": "Balance the equation: Mg + HCl → MgCl₂ + H₂",
"options": ["Mg + 2HCl → MgCl₂ + H₂", "Mg + HCl → MgCl + H₂", "2Mg + HCl → MgCl₂ + H₂", "Mg + HCl → MgCl₂ + H₂"],
"answer": 0
},
{
"question": "Balance the equation: Na + H₂O → NaOH + H₂",
"options": ["Na + H₂O → NaOH + H₂", "2Na + 2H₂O → 2NaOH + H₂", "Na + 2H₂O → NaOH + H₂", "2Na + H₂O → Na₂O + H₂"],
"answer": 1
},
{
"question": "Balance the equation: CaCO₃ → CaO + CO₂",
"options": ["CaCO₃ → CaO + CO₂", "2CaCO₃ → 2CaO + CO₂", "CaCO₃ → Ca + CO₂", "CaCO₃ → CaO + 2CO₂"],
"answer": 0
},
{
"question": "Balance the equation: Zn + H₂SO₄ → ZnSO₄ + H₂",
"options": ["Zn + H₂SO₄ → ZnSO₄ + H₂", "2Zn + H₂SO₄ → ZnSO₄ + H₂", "Zn + H₂SO₄ → ZnSO₄ + 2H₂", "Zn + 2H₂SO₄ → ZnSO₄ + H₂"],
"answer": 0
},
{
"question": "Balance the equation: Al + O₂ → Al₂O₃",
"options": ["4Al + 3O₂ → 2Al₂O₃", "2Al + O₂ → Al₂O₃", "Al + O₂ → AlO", "3Al + O₂ → Al₃O₂"],
"answer": 0
},
{
"question": "Balance the equation: CH₄ + O₂ → CO₂ + H₂O",
"options": ["CH₄ + 3O₂ → CO₂ + H₂O", "CH₄ + O₂ → CO₂ + H₂O", "2CH₄ + O₂ → CO₂ + H₂O", "CH₄ + 2O₂ → CO₂ + 2H₂O"],
"answer": 3
},
{
"question": "Balance the equation: KClO₃ → KCl + O₂",
"options": ["KClO₃ → KCl + O₂", "2KClO₃ → 2KCl + 3O₂", "KClO₃ → KCl + 2O₂", "3KClO₃ → KCl + O₂"],
"answer": 1
},
{
"question": "Balance the equation: C₃H₈ + O₂ → CO₂ + H₂O",
"options": ["C₃H₈ + O₂ → CO₂ + H₂O", "C₃H₈ + 5O₂ → 3CO₂ + 4H₂O", "2C₃H₈ + O₂ → CO₂ + H₂O", "C₃H₈ + 3O₂ → 3CO₂ + 4H₂O"],
"answer": 1
},
{
"question": "Balance the equation: Pb(NO₃)₂ → PbO + NO₂ + O₂",
"options": ["Pb(NO₃)₂ → PbO + NO₂ + O₂", "Pb(NO₃)₂ → PbO + 2NO₂", "2Pb(NO₃)₂ → 2PbO + 4NO₂ + O₂", "Pb(NO₃)₂ → Pb + NO₂ + O₂"],
"answer": 2
},
{
"question": "Balance the equation: NH₃ + O₂ → NO + H₂O",
"options": ["NH₃ + O₂ → NO + H₂O", "2NH₃ + O₂ → NO + H₂O", "4NH₃ + 5O₂ → 4NO + 6H₂O", "NH₃ + 2O₂ → NO + H₂O"],
"answer": 2
},
{
"question": "Balance the equation: H₂S + O₂ → SO₂ + H₂O",
"options": ["H₂S + O₂ → SO₂ + H₂O", "2H₂S + 3O₂ → 2SO₂ + 2H₂O", "H₂S + 2O₂ → SO₂ + H₂O", "2H₂S + O₂ → SO₂ + H₂O"],
"answer": 1
},
{
"question": "Balance the equation: NaOH + H₂SO₄ → Na₂SO₄ + H₂O",
"options": ["NaOH + H₂SO₄ → Na₂SO₄ + H₂O", "2NaOH + H₂SO₄ → Na₂SO₄ + 2H₂O", "NaOH + H₂SO₄ → NaHSO₄ + H₂O", "NaOH + H₂SO₄ → Na₂SO₄ + H₂"],
"answer": 1
},
{
"question": "Balance the equation: FeS + HCl → FeCl₂ + H₂S",
"options": ["FeS + HCl → FeCl₂ + H₂S", "FeS + 2HCl → FeCl₂ + H₂S", "2FeS + HCl → FeCl₂ + H₂S", "FeS + HCl → FeCl + H₂S"],
"answer": 1
},
{
"question": "Balance the equation: AgNO₃ + Cu → Cu(NO₃)₂ + Ag",
"options": ["AgNO₃ + Cu → Cu(NO₃)₂ + Ag", "2AgNO₃ + Cu → Cu(NO₃)₂ + 2Ag", "AgNO₃ + 2Cu → Cu(NO₃)₂ + Ag", "AgNO₃ + Cu → Cu + Ag"],
"answer": 1
},
{
"question": "Balance the equation: BaCl₂ + H₂SO₄ → BaSO₄ + HCl",
"options": ["BaCl₂ + H₂SO₄ → BaSO₄ + HCl", "BaCl₂ + H₂SO₄ → BaSO₄ + 2HCl", "2BaCl₂ + H₂SO₄ → BaSO₄ + HCl", "BaCl₂ + H₂SO₄ → BaSO₄ + Cl₂"],
"answer": 1
},
{
"question": "Balance the equation: MnO₂ + HCl → MnCl₂ + Cl₂ + H₂O",
"options": ["MnO₂ + 4HCl → MnCl₂ + Cl₂ + 2H₂O", "MnO₂ + HCl → MnCl₂ + Cl₂ + H₂O", "MnO₂ + 2HCl → MnCl₂ + Cl₂ + H₂O", "MnO₂ + HCl → MnCl₂ + H₂O"],
"answer": 0
},
{
"question": "Balance the equation: KMnO₄ + HCl → KCl + MnCl₂ + Cl₂ + H₂O",
"options": ["KMnO₄ + HCl → KCl + MnCl₂ + Cl₂ + H₂O", "2KMnO₄ + 16HCl → 2KCl + 2MnCl₂ + 5Cl₂ + 8H₂O", "KMnO₄ + 8HCl → KCl + MnCl₂ + Cl₂ + H₂O", "2KMnO₄ + HCl → KCl + MnCl₂ + Cl₂ + H₂O"],
"answer": 1
},
{
"question": "Balance the equation: Cu + HNO₃ → Cu(NO₃)₂ + NO + H₂O",
"options": ["Cu + HNO₃ → Cu(NO₃)₂ + NO + H₂O", "3Cu + 8HNO₃ → 3Cu(NO₃)₂ + 2NO + 4H₂O", "Cu + 2HNO₃ → Cu(NO₃)₂ + NO + H₂O", "Cu + HNO₃ → Cu(NO₃)₂"],
"answer": 1
},
{
"question": "Balance the equation: Zn + NaOH → Na₂ZnO₂ + H₂",
"options": ["Zn + NaOH → Na₂ZnO₂ + H₂", "Zn + 2NaOH → Na₂ZnO₂ + H₂", "2Zn + NaOH → Na₂ZnO₂ + H₂", "Zn + NaOH → ZnO + H₂"],
"answer": 1
},
{
"question": "Balance the equation: Ca + H₂O → Ca(OH)₂ + H₂",
"options": ["Ca + H₂O → Ca(OH)₂ + H₂", "Ca + 2H₂O → Ca(OH)₂ + H₂", "2Ca + H₂O → Ca(OH)₂ + H₂", "Ca + H₂O → CaO + H₂"],
"answer": 1
},
{
"question": "Balance the equation: HNO₃ + Ca(OH)₂ → Ca(NO₃)₂ + H₂O",
"options": ["HNO₃ + Ca(OH)₂ → Ca(NO₃)₂ + H₂O", "2HNO₃ + Ca(OH)₂ → Ca(NO₃)₂ + 2H₂O", "HNO₃ + Ca(OH)₂ → CaNO₃ + H₂O", "HNO₃ + Ca(OH)₂ → Ca(NO₃)₂"],
"answer": 1
},
{
"question": "Balance the equation: SO₂ + O₂ → SO₃",
"options": ["SO₂ + O₂ → SO₃", "2SO₂ + O₂ → 2SO₃", "SO₂ + 2O₂ → SO₃", "SO₂ + O₂ → 2SO₃"],
"answer": 1
},
{
"question": "Balance the equation: H₂SO₄ + Na₂CO₃ → Na₂SO₄ + CO₂ + H₂O",
"options": ["H₂SO₄ + Na₂CO₃ → Na₂SO₄ + CO₂ + H₂O", "2H₂SO₄ + Na₂CO₃ → Na₂SO₄ + CO₂ + H₂O", "H₂SO₄ + Na₂CO₃ → Na₂SO₄ + H₂O", "H₂SO₄ + Na₂CO₃ → CO₂ + H₂O"],
"answer": 0
},
{
"question": "Balance the equation: Cu + O₂ → CuO",
"options": ["Cu + O₂ → CuO", "2Cu + O₂ → 2CuO", "Cu + O₂ → Cu₂O", "4Cu + O₂ → 2Cu₂O"],
"answer": 1
},
{
"question": "Balance the equation: Cl₂ + H₂ → HCl",
"options": ["Cl₂ + H₂ → 2HCl", "Cl₂ + H₂ → HCl", "2Cl₂ + H₂ → HCl", "Cl₂ + 2H₂ → 2HCl"],
"answer": 0
},
{
"question": "Balance the equation: CaO + H₂O → Ca(OH)₂",
"options": ["CaO + H₂O → Ca(OH)₂", "2CaO + H₂O → Ca(OH)₂", "CaO + 2H₂O → Ca(OH)₂", "CaO → Ca(OH)₂"],
"answer": 0
},
{
"question": "Balance the equation: Al + Fe₂O₃ → Al₂O₃ + Fe",
"options": ["Al + Fe₂O₃ → Al₂O₃ + Fe", "2Al + Fe₂O₃ → Al₂O₃ + 2Fe", "3Al + Fe₂O₃ → Al₃O₃ + Fe", "Al + Fe₂O₃ → AlFeO₃"],
"answer": 1
},
{
"question": "Balance the equation: Na + O₂ → Na₂O₂",
"options": ["Na + O₂ → Na₂O₂", "2Na + O₂ → Na₂O₂", "Na + 2O₂ → Na₂O₂", "4Na + O₂ → Na₂O₂"],
"answer": 1
},
{
"question": "Balance the equation: P + O₂ → P₂O₅",
"options": ["P + O₂ → P₂O₅", "2P + O₂ → P₂O₅", "4P + 5O₂ → 2P₂O₅", "P + 5O₂ → P₂O₅"],
"answer": 2
},
{
"question": "Balance the equation: HCl + NaOH → NaCl + H₂O",
"options": ["HCl + NaOH → NaCl + H₂O", "2HCl + NaOH → NaCl + H₂O", "HCl + NaOH → NaCl", "HCl + NaOH → Na₂Cl + H₂O"],
"answer": 0
},
{
"question": "Balance the equation: Al + HCl → AlCl₃ + H₂",
"options": ["Al + HCl → AlCl₃ + H₂", "2Al + 6HCl → 2AlCl₃ + 3H₂", "Al + 3HCl → AlCl₃ + H₂", "2Al + HCl → AlCl₃ + H₂"],
"answer": 1
},
{
"question": "Balance the equation: C₂H₆ + O₂ → CO₂ + H₂O",
"options": ["C₂H₆ + O₂ → CO₂ + H₂O", "2C₂H₆ + 7O₂ → 4CO₂ + 6H₂O", "C₂H₆ + 2O₂ → CO₂ + H₂O", "C₂H₆ + 5O₂ → CO₂ + H₂O"],
"answer": 1
},
{
"question": "Balance the equation: Na₂O + H₂O → NaOH",
"options": ["Na₂O + H₂O → 2NaOH", "Na₂O + H₂O → NaOH", "Na₂O + 2H₂O → NaOH", "Na₂O → NaOH"],
"answer": 0
},
{
"question": "Balance the equation: C + O₂ → CO₂",
"options": ["C + O₂ → CO₂", "2C + O₂ → CO₂", "C + O₂ → CO", "C + 2O₂ → CO₂"],
"answer": 0
},
{
"question": "Balance the equation: C + CO₂ → CO",
"options": ["C + CO₂ → CO", "C + CO₂ → 2CO", "2C + CO₂ → CO", "C + 2CO₂ → CO"],
"answer": 1
},
{
"question": "Balance the equation: Na + Cl₂ → NaCl",
"options": ["Na + Cl₂ → NaCl", "2Na + Cl₂ → 2NaCl", "Na + 2Cl₂ → NaCl", "4Na + Cl₂ → NaCl"],
"answer": 1
},
{
"question": "Balance the equation: Ca + N₂ → Ca₃N₂",
"options": ["Ca + N₂ → Ca₃N₂", "3Ca + N₂ → Ca₃N₂", "2Ca + N₂ → Ca₂N₂", "Ca + 2N₂ → Ca₃N₂"],
"answer": 1
},
{
"question": "Balance the equation: C₄H₁₀ + O₂ → CO₂ + H₂O",
"options": ["C₄H₁₀ + O₂ → CO₂ + H₂O", "2C₄H₁₀ + 13O₂ → 8CO₂ + 10H₂O", "C₄H₁₀ + 5O₂ → CO₂ + H₂O", "C₄H₁₀ + 10O₂ → CO₂ + H₂O"],
"answer": 1
},
{
"question": "Balance the equation: Fe + CuSO₄ → FeSO₄ + Cu",
"options": ["2Fe + CuSO₄ → Fe₂SO₄ + Cu", "Fe + CuSO₄ → FeSO₄ + Cu", "Fe + CuSO₄ → Fe + Cu", "Fe + 2CuSO₄ → FeSO₄ + Cu"],
"answer": 1
},
{
"question": "Balance the equation: H₂ + Cl₂ → HCl",
"options": ["H₂ + Cl₂ → HCl", "2H₂ + Cl₂ → HCl", "H₂ + Cl₂ → 2HCl", "H₂ + 2Cl₂ → 2HCl"],
"answer": 2
},
{
"question": "Balance the equation: CO + O₂ → CO₂",
"options": ["CO + O₂ → CO₂", "2CO + O₂ → 2CO₂", "CO + 2O₂ → CO₂", "3CO + O₂ → CO₂"],
"answer": 1
},
{
"question": "Balance the equation: Ca(OH)₂ + CO₂ → CaCO₃ + H₂O",
"options": ["Ca(OH)₂ + CO₂ → CaCO₃ + H₂O", "Ca(OH)₂ + CO₂ → CaCO₃", "2Ca(OH)₂ + CO₂ → CaCO₃ + H₂O", "Ca(OH)₂ + 2CO₂ → CaCO₃ + H₂O"],
"answer": 0
},
{
"question": "Balance the equation: NaHCO₃ → Na₂CO₃ + CO₂ + H₂O",
"options": ["NaHCO₃ → Na₂CO₃ + CO₂ + H₂O", "2NaHCO₃ → Na₂CO₃ + CO₂ + H₂O", "NaHCO₃ → Na₂CO₃ + H₂O", "2NaHCO₃ → Na₂CO₃ + H₂O"],
"answer": 1
},
{
"question": "Balance the equation: H₂SO₄ + KOH → K₂SO₄ + H₂O",
"options": ["H₂SO₄ + KOH → K₂SO₄ + H₂O", "H₂SO₄ + 2KOH → K₂SO₄ + 2H₂O", "H₂SO₄ + KOH → KHSO₄ + H₂O", "2H₂SO₄ + KOH → K₂SO₄ + H₂O"],
"answer": 1
},
{
"question": "Balance the equation: PbO + HCl → PbCl₂ + H₂O",
"options": ["PbO + HCl → PbCl₂ + H₂O", "PbO + 2HCl → PbCl₂ + H₂O", "2PbO + HCl → PbCl₂ + H₂O", "PbO + HCl → PbCl + H₂O"],
"answer": 1
},
{
"question": "Balance the equation: Mg + N₂ → Mg₃N₂",
"options": ["Mg + N₂ → Mg₃N₂", "3Mg + N₂ → Mg₃N₂", "2Mg + N₂ → Mg₂N₂", "Mg + 2N₂ → Mg₃N₂"],
"answer": 1
},
{
"question": "Balance the equation: SO₂ + H₂O → H₂SO₃",
"options": ["SO₂ + H₂O → H₂SO₃", "2SO₂ + H₂O → H₂SO₃", "SO₂ + 2H₂O → H₂SO₃", "SO₂ → H₂SO₃"],
"answer": 0
}
]
}
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