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प्रश्न
What do you understand by exothermic reactions?
उत्तर
Exothermic reaction is the chemical reaction that produces heat along with products.
Example: CaO + H2O → Ca(OH)2 + Heat
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संबंधित प्रश्न
What is a balanced chemical equation? Why should a chemical equation be balanced?
Translate the following statement into chemical equation and then balance it.
Potassium metal reacts with water to give potassium hydroxide and hydrogen gas.
Balance the given equation:
AI2(SO4)3 +NaOH 
AI(OH)3 + Na2SO4
Aluminium hydroxide reacts with sulphuric acid to form aluminium sulphate and water. Write a balanced equation for this reaction.
Write the balanced equation for the following reaction, and add the state symbols:
Sodium hydroxide reacts with sulphuric acid to produce sodium sulphate and water.
With the help of an appropriate example, justify that some of the chemical reactions are determined by Evolution of a gas.
Give chemical equation for the reaction involved in the above case.
Write the balanced chemical equation of the following reaction.
sulphur + nitric acid→ sulphuric acid + nitrogen dioxide + water.
Balance the following simple equation:
Fe2O3 + CO → Fe + CO2
Write the skeleton equation for the following word equation and then balance them.
- Carbon + Oxygen → Carbon dioxide.
- Phosphorus + Chlorine → Phosphorus pentachloride.
- Sulphur + Oxygen → Sulphur dioxide.
- Magnesium + hydrogen → Magnesium + Hydrogen chloride chloride.
What is a product in a chemical equation?
