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प्रश्न
Mention any two exothermic reactions.
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उत्तर
Burning of magnesium ribbon and burning of a candle.
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संबंधित प्रश्न
What do you observe when Ammonia is brought in contact of hydrogen chloride.gas.
State the effect of an exothermic reaction on the surroundings.
Give an example of the following chemical changes.
A reaction involving blue solution.
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Chemical reactions may proceed with evolution of heat. Give an example.
Respiration is a ______ change.
The Dissolution of glucose in water is also an ______ change.
Match the following:
| Colum I | Column II | ||
| 1. | Alloying | a. | Exothermic change |
| 2. | Crystallization | b. | Periodic change |
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| 4. | Seasonal changes | d. | Pure solid |
Give examples for the exothermic process.
Give scientific reasons.
While preparing dilute sulphuric acid from concentrated sulphuric acid in the laboratory, the concentrated sulphuric acid is added slowly to water with constant stirring.
