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प्रश्न
Write true or false
Burning of paper and formation of curd are reversible changes.
विकल्प
True
False
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उत्तर
False.
Burning of paper and formation of curd are irreversible changes.
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संबंधित प्रश्न
State whether the following statement is true or false. In case a statement is false, write the corrected statement.
Cutting a log of wood into pieces is a chemical change.
Changes in which only ______ properties of a substance change are called physical changes.
Write short answer.
Give an example of desirable change which can also be undesirable
State the various conditions that favour the process of evaporation.
State whether the following is physical or chemical changes.
shaping a piece of glass —
Tick (√) the correct alternative from the choice given for the following statement
Which one of the following is volatile in nature ?
Which of the following are chemical changes ?
- decaying of wood
- burning of wood
- sawing of wood
- hammering of nail into wood
Fill in the blank.
The process of a liquid changing into a solid is called ________
Select the chemical changes from the following list of changes
The occurrence of lightning.
Mention a few physical properties of a substance.
