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प्रश्न
Mention any two exothermic reactions.
उत्तर
Burning of magnesium ribbon and burning of a candle.
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संबंधित प्रश्न
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In a................ reaction heat energy is absorbed.
State the following reaction whether heat is evolved or absorbed –
Two neutral gases on passage through an electric are given nitric oxide.
Differentiate between the following:
A catalyst and a promoter.
Differentiate between the following:
Electrolytic decomposition and photochemical decomposition.
Write an Explanation.
Endothermic reaction
Classify the following reaction into Exothermic and Endothermic reactions.
Magnesium ribbon when burned in air, it forms magnesium oxide.
Respiration is a ______ change.
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.
Give scientific reason.
While preparing dilute sulphuric acid from concentrated sulphuric acid in the laboratory, the concentrated sulphuric acid is added slowly to water with constant stirring.
Give a scientific reason.
While preparing dilute sulphuric acid from concentrated sulphuric acid in the laboratory, the concentrated sulphuric acid is added slowly to water with constant stirring.
