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प्रश्न
State whether the following is physical or chemical changes.
water cycle in nature —
उत्तर
physical change,
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Dissolving common salt in water.
Classify the following as chemical or physical change:
Burning of paper and wood
Fill in the blank.
Heat is .................... by a gas during the process of condensation.
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 are physical changes ?
- melting of iron metal
- rusting of iron metal
- bending of an iron rod
- drawing a wire of iron metal
Ammonium chloride is also a sublimable solid. Give a reason why the sublimation of ammonium chloride involves a physical and a chemical change.
Select the chemical changes from the following list of changes
Butter turning rancid
Select the chemical changes from the following list of changes
Preparation of carbon dioxide from calcium carbonate & dilute hydrochloric acid.
Name the following.
The salt obtained when a chemical change takes place on the addition of iron to dilute sulphuric acid.
Grinding of wheat grain changes its size. It is a ____________ change.
