Advertisements
Advertisements
प्रश्न
Give two examples for each of the following cases:
Physical changes which are not reversible.
उत्तर
(i) Cutting of paper
(ii) Breaking of glass
APPEARS IN
संबंधित प्रश्न
Write true or false for the statement.
Burning of paper and formation of curd are reversible changes
Is burning a physical change or a chemical change? Why?
Write true or false
Cutting of paper into pieces is a chemical change.
Tick the most appropriate answer.
Physical changes are
Write true or false
A natural change can also be a desirable change.
The rusting of an iron object is called :
Fill in the blank.
There is no change in the _____________of the substance during a physical change.
Ammonium chloride is also a sublimable solid. Give a reason why the sublimation of ammonium chloride involves a physical and a chemical change.
Name the following:
The final product of the physical change involved during the ‘melting of a piece of wax’.
What type of energy changes is associated when ice melts?
