Select the exothermic reaction among the following: A. Thermal composition of P₂O₅ B. Formation of atmospheric nitric oxide C. Burning of methane D. Sublimation of dry ice
- Thermal composition of P₂O₅
- Formation of atmospheric nitric oxide
- Burning of methane
- Sublimation of dry ice
Explanation
Burning of methane is an exothermic reaction.
An exothermic reaction releases energy, often in the form of heat.
Burning of methane (CH4):
- This is a combustion reaction where methane reacts with oxygen to produce carbon dioxide, water, and a significant amount of heat energy.
- All combustion reactions are exothermic.
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- Temporary water connections
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- High-temperature steam lines
- Drainage of rainwater only
اس سوال کو وضاحت کے ساتھ پڑھیں
- 10–20 minutes
- 30–60 minutes
- 2–4 hours
- 12–24 hours
اس سوال کو وضاحت کے ساتھ پڑھیں
- Vertical drop fall
- Glacis fall
- Montague type fall
- Inglis fall
اس سوال کو وضاحت کے ساتھ پڑھیں
آکسیجن زیادہ تر عناصر کے ساتھ عمل کرکے دو عنصری مرکبات بناتی ہے جنہیں کیا کہتے ہیں؟
- Bases
- Oxides
- Acids
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
پانی اور کاربن ڈائی آکسائڈ کے سالمے مل کر کیا بناتے ہیں؟
- Nitric acid
- Carbonic acid
- Sulfuric acid
- None of these