Advertisements
Advertisements
प्रश्न
State whether the following statement is true or false. If false write the correct statement.
Melting of butter and wax are examples of chemical changes.
पर्याय
True
False
Advertisements
उत्तर
False.
Correct Statement: Melting of butter and wax are examples of physical changes.
APPEARS IN
संबंधित प्रश्न
Classify the following as chemical or physical change:
Cutting of trees
Classify the following as chemical or physical change:
Passing of electric current through water, and water breaking down into hydrogen and oxygen gases.
Classify the following changes as physical or chemical:- melting of a solid (wax)
State the Differences Between a Physical Change and a Chemical Change.
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.
Select the chemical changes from the following list of changes
Boiling of milk.
Select the chemical changes from the following list of changes
Breaking of glass
Select the chemical changes from the following list of changes
Glowing of an electric bulb.
Give the reason why the following is considered as chemical changes.
An iron nail kept open in the atmosphere rusts.
Stretching gold coin into a ring is a ______ change.
