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प्रश्न
Classify the changes involved in the following process as physical or chemical changes:
Photosynthesis
विकल्प
Physical change
Chemical change
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उत्तर
Chemical change
APPEARS IN
संबंधित प्रश्न
Classify the following as chemical or physical change:
Dissolving common salt in water.
Chemical changes are accompanied by changes in energy.
State whether the following is physical or chemical changes.
cutting wood into small pieces —
Write true or false
Rusting of iron is a chemical change.
Tick the most appropriate answer.
Photosynthesis requires
Sublimation is classified as a physical change. Why ?
State the various conditions that favour the process of evaporation.
Solve this crossword by using the clues that follow-
Across
1. Energy in the form of sunlight is absorbed by the green plants in this process.
4. The reddish-brown substance formed over iron in the presence of oxygen and moisture.
5. This change is permanent and irreversible.
6. The process in which a solid directly changes into gaseous state.
Down
1 . It is the change that takes place in case of swinging pendulum of a clock. –
2. Occurrence of this is a non-periodic change as well as a natural change.
3. It is a physical change.
Which of the following is a physical change?
Give two examples for the following case:
Physical changes which are not reversible
