Advertisements
Advertisements
प्रश्न
State whether the following is physical or chemical changes.
cutting wood into small pieces —
उत्तर
physical change,
APPEARS IN
संबंधित प्रश्न
Classify the following as chemical or physical change:
Making a fruit salad with raw fruits
Write true or false for the statement
A natural change can also be a desirable change
Write short answer.
Give an example of desirable change which can also be undesirable
Classify the following as a physical or a chemical change.
Drying of wet clothes
Potassium chloride is added to water and stirred. A salt solution is obtained, which is then boiled, leaving behind a residue.
- Is the above change physical or chemical?
- Name the residue which remains behind after the salt solution is boiled.
- Is the change reversible or not reversible?
- Are the composition and properties of the original substance altered?
- Give a reason why the above experimentation would not be possible if calcium carbonate was taken in place of potassium chloride.
Name the following.
The gaseous product of the chemical change which takes place during respiration in living organisms.
______ is the substance that is dissolved in a solvent.
A physical change is generally____________.
Give two examples for each of the following cases:
Physical changes which are not reversible.
The change of state of a substance from solid to liquid and liquid to gas is ______.
