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प्रश्न
State whether the following statement is true or false. If false write the correct statement.
Melting of butter and wax are examples of chemical changes.
विकल्प
True
False
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उत्तर
False.
Correct Statement: Melting of butter and wax are examples of physical changes.
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संबंधित प्रश्न
Changes in which only ______ properties of a substance change are called physical changes.
Write true or false
Melting of ice is a physical change.
Photosynthesis cannot take place at night.
Which of the following are physical changes and which are chemical changes ?
Differentiate between a physical change and a chemical change with reference to – Nature of change is temporary and reversible or permanent and irreversible.
Give a reason why – Addition of zinc nitrate to water is a physical change but, the addition of zinc to dilute nitric acid is a chemical change.
Select the chemical changes from the following list of changes
The carbon cycle.
Select the chemical changes from the following list of changes
The crystallisation of salt from its solution.
Ice, water and water vapour look different and display different ______ properties but they are ______ the same.
Give two examples for the following case:
Physical changes which are reversible
