Advertisements
Advertisements
Question
True or False. If false, give the correct answer.
Tarnishing of silver is an example of endothermic change.
Advertisements
Solution
This statement is false.
Correct statement: Tarnishing of silver is an example of change.
APPEARS IN
RELATED QUESTIONS
Identify the endothermic and exothermic reaction.
\[\ce{CaO + H2O -> Ca(OH)2 + Heat}\]
State the effects of endothermic and exothermic reactions on the surroundings.
Name a carbonate which do not decompose on heating.
State the following reaction whether heat is evolved or absorbed –
Two neutral gases on passage through an electric are given nitric oxide.
Give an example of an endothermic reaction.
Chemical reactions may proceed with absorption of heat. Give an example.
Complete the statement by filling in the blank with the correct word:
The reaction of hydrogen burning in oxygen to give a neutral liquid is an example of ________ reaction.
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 |
| 3. | Soap powder + water | c. | Mixing of molten solids |
| 4. | Seasonal changes | d. | Pure solid |
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.
