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प्रश्न
Write true or false
Rusting of iron is a chemical change.
विकल्प
True
False
उत्तर
True
APPEARS IN
संबंधित प्रश्न
Ripening of fruits is a desirable change.
A physical change is temporary. Explain.
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
Fill in the blank.
When a candle burns, wax melts. Melting of wax is a ________ change.
Classify the following as a physical or a chemical change.
Melting of wax
Classify the Following as a Physical Or a Chemical Change.
Making of a Sugar Solution
Fill in the blank with the correct word of the statement given below:
Sublimation of iodine is an example of _________ change.
Select the correct answer from the choice given below to complete the sentence
The dissolution of lead nitrate in water is deemed as a _________ change.
State which of the following 1 to 5 pertain to – A: Physical Change B: Chemical change :
- Sublimation.
- Fermentation.
- Liquefaction or condensation.
- Magnetization.
- Respiration.
A physical change is generally____________.
