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प्रश्न
True or false
Is melting of ice a reversible change?
पर्याय
True
False
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उत्तर
True
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संबंधित प्रश्न
State whether the following statement is true or false. In case a statement is false, write the corrected statement.
Cutting a log of wood into pieces is a chemical change.
True or false
Change of seasons is a non-periodic change.
Photosynthesis cannot take place at night.
Fill in the blank.
There is no change in the _____________of the substance during a physical change.
Name the following:
The final product of the physical change involved during the ‘melting of a piece of wax’.
Select the correct answer from the choice given below to complete the sentence
The energy required for completion of a physical change is ______________ when the change is reversed.
Give the reason why the following is considered as chemical changes.
A piece of magnesium strip is dropped into a beaker containing dilute hydrochloric acid.
Digestion of food is a physical change.
State whether the following statement is true or false:
Stretching of rubber bands is not a physical change.
If you leave a piece of iron in the open for a few days, it acquires a film of brownish substance, called rust.
Do you think rust is different from iron?
