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

Balance the following equation:

PbS + O₂ → PbO + SO₂

Balance the following equation:

S + H₂SO₄ → SO₂ + H₂O

Balance the following equation:

\[\ce{S + HNO3 -> H2SO4 + NO2 + H2O}\]

Balance the following equation:

MnO₂ + HCl → MnCl₂ + H₂O + Cl₂

Balance the following equation:

C + H₂SO₄ → CO₂ + H₂O + SO₂

Balance the following equation:

KOH + Cl₂ → KCl + KClO + H₂O

Balance the following equation:

NO₂ +H₂O → HNO₂ + HNO₃

Balance the following equation:

Pb₃O₄ + HCl → PbCl₂ + H₂O + Cl₂

Balance the following equation:

 H₂O + Cl₂ → HCl + O₂

Balance the following equation:

NaHCO₃ → Na₂CO₃ + H₂O + CO₂

Balance the following equation:

 HNO₃ + H₂S → NO₂ + H₂O + S

Balance the following equation:

P + HNO₃ → NO₂ + H₂O + H₃PO₄

Balance the following equation:

Zn + HNO₃ `→` Zn(NO₃)₂ + H₂O + NO₂

Sodium chloride reacts with silver nitrate to produce silver chloride and sodium nitrate

Write the equation.

Check whether it is balanced, if not balance it.

Find the weights of reactants and products.

State the law which this equation satisfies. 

What information does the following chemical equation convey?

Zn + H₂SO₄ → ZnSO₄+ H₂

Name the fundamental law that is involved in every equation.

What is the valency of :

carbon in CH₄

Choose the correct answer from the options given below.

The formula of sodium carbonate is Na₂CO₃ and that of calcium hydrogen carbonate is