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प्रश्न
Digestion of food is a physical change.
पर्याय
True
False
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उत्तर
Digestion of food is a physical change- False.
Correct statement
Digestion of food is a chemical change.
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संबंधित प्रश्न
Try segregating the things around you as pure substances or mixtures.
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.
Tick the most appropriate answer.
3. Physical changes are
- permanent.
- periodic,
- temporary
- irreversible.
Fill in the blank
Changes that occur in nature are called ______
Separate the following into physical and chemical changes :
Sublimation of a solid, Decomposition of water into hydrogen and oxygen by passing electric current, Formation of clouds, Making a fruit salad from raw fruits, Dissolving carbon dioxide in water
Which of the following are physical changes ?
- melting of iron metal
- rusting of iron metal
- bending of an iron rod
- drawing a wire of iron metal
Fill in the blank.
The process of a liquid changing into a solid is called ________
Give reasons why – separation of mixtures e.g. iron from a mixture of iron and sulphur is a physical change, but heating a mixture of iron and sulphur is considered a chemical change.
Gas exists in three states as solid, liquid, and gas.
Give two examples for the following case:
Physical changes which are not reversible
