(English Medium) ICSE Class 9 - CISCE Question Bank Solutions

Differentiate between the following term:

Atomic number and mass number

Balance the following important equation:

NaHCO₃ + H₂SO₄ → Na₂SO₄ + H₂O + CO₂ 

Balance the following important equation:

NaOH + H₂SO₄ → Na₂SO₄ + H₂O 

Balance the following important equation:

Pb(NO₃)₂ + NaCl → NaNO₃ + PbCl₂ 

Balance the following important equation:

FeSO₄ + NaOH → Na₂SO₄ + Fe(OH)₂ 

Balance the following important equation:

FeCl₃ + NaOH → NaCl + Fe(OH)₃

Balance the following important equation:

CuSO₄ + NaOH → Na₂SO₄ + Cu(OH)₂  

Balance the following important equation:

FeCl₃ + NH₄OH → NH₄Cl + Fe(OH)₃  

Balance the following important equation:

ZnO + NaOH → Na₂ZnO₂ + H₂O  

Balance the following important equation:

Pb(OH)₂ + NaOH → Na₂PbO₂ + H₂O  

Balance the following important equation:

Al₂O₃.2H₂O + NaOH → NaAlO₂ + H₂O  

Balance the following important equation:

NaAlO₂ + H₂O  → NaOH  + Al(OH)₃ 

Balance the following important equation:

\[\ce{Al(OH)3 -> Al2O3 + H2O}\]

Balance the following important equation:

ZnS  + O₂  → ZnO + SO₂ 

Balance the following important equation:

Fe₂O₃  + Al  → Al₂O₃ + Fe

Balance the following important equation:

Al + Cl₂  → AlCl₃ 

Balance the following important equation:

Fe + HCl  → FeCl₂ + H₂  

Balance the following important equation:

NaCl + H₂SO₄  → Na₂SO₄ + HCl  

Balance the following important equation:

Na₂CO₃ + HCl → NaCl + H₂O + CO₂ 

Balance the following important equation:

Pb(NO₃)₂ + HCl → PbCl₂ + HNO₃