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प्रश्न
State whether the following is physical or chemical changes.
burning of sugar —
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उत्तर
chemical change,
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संबंधित प्रश्न
Tick the most appropriate answer.
3. Physical changes are
- permanent.
- periodic,
- temporary
- irreversible.
Write true or false for the statement
Decomposition of leaves is a fast change.
Dissolving salt in water is a reversible change.
State the differences between a physical change and a chemical change.
What do you observe when :
lighted match stick is brought near the mouth of the test tube containing hydrogen gas.
Write true or false
Burning of sugar is a temporary change.
Tick the most appropriate answer.
Photosynthesis requires
Classify the following as a physical or a chemical change.
Manufacture of salt from sea water
Fill in the blank.
A change, which alters the composition of a substances, is known as a___________ change.
Distinguish physical and chemical changes.
