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प्रश्न
Fill in the blank.
The process of a liquid changing into a solid is called ________
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उत्तर
The process of a liquid changing into a solid is called freezing.
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संबंधित 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
Classify the following changes as physical or chemical:-boiling
Sublimation is classified as a physical change. Why ?
Classify the following as physical or chemical changes :
Breaking of a glass tumbler
Which of the following are physical changes and which are chemical changes ?
Freezing of water
Classify the following as a physical or a chemical change.
Drying of wet clothes
Select the chemical changes from the following list of changes
The crystallisation of salt from its solution.
Physical Change: Boiling::Chemical Change: ______.
State whether the following statement is true or false:
Anaerobic bacteria digest animal waste and produce biogas.
If you leave a piece of iron in the open for a few days, it acquires a film of brownish substance, called rust.
Do you think rust is different from iron?
