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प्रश्न
State whether the following statement is true or false. In case a statement is false, write the corrected statement.
Condensation of steam is not a chemical change.
पर्याय
True
False
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उत्तर
This statement is True.
Explanation:
Steam condensation is a physical change, as it involves a change of state from gas to liquid without altering the chemical composition.
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संबंधित प्रश्न
Complete and balance the following chemical equations
Na + H2 O →
MULTIPLE CHOICE QUESTIONS
Tick the most appropriate answer.
Reduction is a chemical reaction in which there is
- removal of hydrogen
- removal of oxygen
- addition of oxygen
- none of these
FILL IN THE BLANK
Distillation is a method of obtaining pure ............. from a solution.
TRUE \ FALSE
Copper can displace iron from iron sulphate.
TRUE \ FALSE
Electrolytic refining is a method in which a thin coating of a metal is done over another metal.
How is precipitate formation in a chemical reaction indicated?
Give an example of a reaction where the following are involved
Heat
Select the correct answer from the options given below:
State the gaseous product formed, when
An active metal reacts with dilute sulphuric acid.
Assertion: The formation of iron oxide from iron is a chemical change.
Reason: For the rust to form from iron, it must be exposed to air and water.
Match the following:
| 1. | Sodium Chloride | a. | CaSO41/2H2O |
| 2. | Calcium sulphate dihydrate | b. | C2H5Oh |
| 3. | Magnesium sulphate hydrate | c. | CaSO4.2H2O |
| 4. | Calcium sulphate hemihydrate | d. | NaCl |
| 5. | Phenol | e. | MgSO4.H2O |
