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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 endothermic reactions. Give two examples of each.
FILL IN THE BLANK
In a................ reaction heat energy is absorbed.
Identify the endothermic and exothermic reaction.
\[\ce{CaCO_{3(s)}->[\Delta] CaO_{(s)} + CO2}\]
Give an example with a balanced equation, of the following reaction:
electrochemical reaction
Respiration is a ______ change.
Mention any two exothermic reactions.
Identify the type of chemical reaction given below:
\[\ce{2KClO3 -> 2KCl + 3O2 ^}\]
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 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.
