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प्रश्न
Select the correct answer from the choice given below to complete the sentence
A change in which a substance retains its identity is a
______ change.
पर्याय
physical
chemical
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उत्तर
A change in which a substance retains its identity is a physical change.
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संबंधित प्रश्न
Tick the most appropriate answer
2. Melting of ice is a
- reversible change
- irreversible change
- chemical change
- none of these
Tick the most appropriate answer.
3. Physical changes are
- permanent.
- periodic,
- temporary
- irreversible.
State whether the following is physical or chemical changes.
burning of sugar —
Tick the most appropriate answer.
Rising and setting of the sun at a given place is a
Classify the following as physical or chemical change :
Growth of a plant
Classify the following as a physical or a chemical change.
Melting of wax
Fill in the blank with the appropriate word of the statement given below:
If a change is permanent and irreversible it is considered a _________ change.
Give the reason why the following is considered as chemical changes.
Copper carbonate on heat gives copper oxide and carbon dioxide.
Give the reason why the following is considered as chemical changes.
A bright light is seen evolved when a strip of magnesium is heated.
What type of energy changes is associated when ice melts?
