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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.
Identify the endothermic and exothermic reaction.
HCl + NaOH → NaCl + H2O + heat
What do you observe? When
Lead nitrate is heated.
Differentiate between the following:
A catalyst and a promoter.
Chemical reactions may proceed with absorption of heat. Give an example.
Give an example with a balanced equation, of the following reaction:
electrochemical reaction
Select the correct answer from the options given below:
State the gaseous product formed, when
An exothermic reaction takes place between ammonia and neutral gas.
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 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 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.
