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

Balance the following simple equation:

\[\ce{N2 + H2 <=> NH3}\]

Balance the following simple equation:

Fe₂O₃  +  H₂  → Fe  +  H₂O

Balance the following simple equation:

KBr  +  Cl₂  → KCl  +  Br₂

Balance the following simple equation:

NaOH  +  Cl₂  →  NaCl  +   NaClO  +  H₂O 

Balance the following simple equation:

NaHCO₃  +  H₂SO₄  →  Na₂SO₄  +  H₂O  +  CO₂ 

Balance the following simple equation:

Mg  +  CO₂  →  MgO  +  C

Balance the following simple equation:

Fe₂O₃  +  CO  →  Fe  +  CO₂ 

Balance the following simple equation:

CaO  +  HCl  →  CaCl₂  +  H₂O 

CaCO3 + 2HCl[dil.] → CaCl₂ + H₂O + CO₂ [g]

State the information provided by the above chemical equation.

CaCO₃ + 2HCl[dil.] → CaCl₂ + H₂O + CO₂ [g]

State the information not conveyed by the above chemical equation. 

Write a balanced equation for the following word equation:

Potassium nitrate → Potassium nitrite + Oxygen

Write a balanced equation for the following word equation:

Iron + Hydrochloric acid → Iron [II] chloride + Hydrogen

Write a balanced equation for the following word equation:

Nitrogen dioxide + Water + Oxygen → Nitric acid

Write a balanced equation for the following word equation:

Lead dioxide [lead (IV) oxide] → Lead monoxide + Oxygen 

Write a balanced equation for the following word equation:

Aluminium + Oxygen → Aluminium oxide 

Write a balanced equation for the following word equation:

Potassium bromide + Chlorine → Potassium chloride + Bromine

Write a balanced equation for the following word equation:

Potassium bicarbonate → Potassium carbonate + Water + Carbon dioxide 

Write a balanced equation for the following word equation:

Calcium hydroxide + Ammonium chloride → Calcium chloride + Water + Ammonia

With reference to a chemical equation state which of the statements 1 to 5 pertain to A or B.
A: Information provided by a chemical equation. 
B: Limitations of a chemical equation.

1. The nature of the individual elements.
2. The speed of the reaction.
3. The state of matter in which the substance is present.
4. The completion of the reaction.
5. The direction of the reaction.

Fill in the blank with the correct word from the options given below:

A chemical equation is a shorthand form for a _______ change.