B) Write the balanced chemical equation for the following reactions :-
1. Phosphorus burns in chlorine to form phosphorus pentachloride.
2. Burning of natural gas.
3. The process of respiration.

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Solution

1. Phosphorus burns in chlorine to form phosphorus pentachloride.
P₄ + 10Cl₂ → 4PCl₅

2. Burning of gas
CH₄ + 2O₂ $\to$ CO₂ + 2H₂O + Energy

3. Respiration
C₆H₁₂O₆ + 6O₂ $\to$ 6CO₂ + 6H₂O + Energy

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