Advertisements
Advertisements
प्रश्न
Separate the following into physical and chemical changes :
Sublimation of a solid, Decomposition of water into hydrogen and oxygen by passing electric current, Formation of clouds, Making a fruit salad from raw fruits, Dissolving carbon dioxide in water
उत्तर
Physical change: Sublimation of a solid, making a fruit salad from raw fruits, formation of clouds, and dissolution of carbon dioxide in water Chemical change: Decomposition of water into hydrogen and oxygen by passing electric current (electrolysis)
APPEARS IN
संबंधित प्रश्न
Explain the following giving an example.
Pure substance
Write true or false for the statement.
Burning of paper and formation of curd are reversible changes
State whether the following is physical or chemical changes.
cutting wood into small pieces —
Photosynthesis cannot take place at night.
Classify the following as a physical or a chemical change.
Burning of coal
Name the following:
The type of change physical or chemical involved – ‘when a substance undergoes a change in state, colour or size’.
Select the chemical changes from the following list of changes
Breaking of glass
Select the chemical changes from the following list of changes
The crystallisation of salt from its solution.
Name the following.
The salt obtained when a chemical change takes place on the addition of iron to dilute sulphuric acid.
______ is the Universal Solvent.
