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प्रश्न
Tick the most appropriate answer.
Rising and setting of the sun at a given place is a
पर्याय
periodic change
undesirable change
physical change
reversible change
उत्तर
periodic change.
APPEARS IN
संबंधित प्रश्न
Write true or false for the statement
Decomposition of leaves is a fast change.
Fill in the blank.
Growing of a seedling into a plant is _______ change.
A physical change is temporary. Explain.
State what is meant by the term – interconversion of matter. Is interconversion of matter a physical change or 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
Vaporisation of water into water vapour.
Select the chemical changes from the following list of changes
Change of seasons
Name the following.
The product of the chemical change in keeping a polished iron nail exposed to the atmosphere.
Which of the following is a physical change?
Making sugar solution is a ____________ change.
