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प्रश्न
Tick the most appropriate answer.
Rising and setting of the sun at a given place is a
पर्याय
periodic change
undesirable change
physical change
reversible change
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उत्तर
periodic change.
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संबंधित प्रश्न
State three differences between evaporation and boiling
Write true or false
Burning of paper and formation of curd are reversible changes.
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 appropriate word of the statement given below:
Germination of seeds is considered a __________ change.
Name the following:
The final product of the physical change involved during the ‘melting of a piece of wax’.
Give a reason why rusting of iron is a chemical change but, the magnetization of iron is a physical change.
Select the chemical changes from the following list of changes
Vaporisation of water into water vapour.
When ice melts to form water, change occurs in its
Fill in the blanks in the following statements using the words given in the box.
| rusted, colourful, substance, chemical, physical, reversible, iron oxide, object |
- Making sugar solution is a ______ change.
- A physical change is generally ______.
- Grinding of wheat grain changes its size. It is a ______ change.
- Iron benches kept in lawns and gardens get ______. It is a ______ change because a new ______ is formed.
