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प्रश्न
True or False. If false, give the correct answer.
Tarnishing of silver is an example of endothermic change.
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उत्तर
This statement is false.
Correct statement: Tarnishing of silver is an example of change.
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संबंधित प्रश्न
Define exothermic reactions. Give two examples of each.
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.
Identify the endothermic and exothermic reaction.
\[\ce{CaO + H2O -> Ca(OH)2 + Heat}\]
Why energy is involved in a chemical change?
Name a carbonate which do not decompose on heating.
State which type of chemical reaction proceeds with the absorption of heat energy.
State the following reaction whether heat is evolved or absorbed –
Two neutral gases combine to give a basic gas.
Explain the term energy changes in a chemical change or reaction.
Mention any two exothermic reactions.
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.
