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प्रश्न
Which of the following are physical changes and which are chemical changes ?
Glowing of an electric bulb
विकल्प
Physical change
Chemical change
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उत्तर
Glowing of electric bulb – Physical change
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संबंधित प्रश्न
Classify the following as chemical or physical change:
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State whether the following is physical or chemical changes.
burning of sugar —
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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.
State one instance where water undergoes a physical change and one in which it undergoes a chemical change.
What will you take into account while identifying the following?
A chemical change in a substance.
