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प्रश्न
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.
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उत्तर
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संबंधित प्रश्न
Ripening of fruits is a desirable change.
Classify the following changes as physical or chemical: curdling of milk
Classify the following changes as physical or chemical:- photosynthesis in plants
A physical change is temporary. Explain.
What is a physical change ? Give two examples of physical changes.
Classify the Following as a Physical Or a Chemical Change.
Making of a Sugar Solution
State which of the following pertain to – chemical changes.
- Substance retains its identity.
- The change is permanent.
- No new substance is formed.
- Is easily reversible.
- Produces one or more new substances by a change in its composition.
- The change is temporary.
- The composition and properties of the original substance are not altered.
Select the chemical changes from the following list of changes
The carbon cycle.
When a woolen yarn is knitted to get a sweater, the change can be classified as ____________.
Explain the characteristics of physical change with examples.
