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प्रश्न
Classify the following as physical or chemical properties
The composition of a sample of steel is 98% iron, 1.5% carbon and 0.5% other elements.
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उत्तर
Physical property
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Cutting of trees
Tick the most appropriate answer.
3. Physical changes are
- permanent.
- periodic,
- temporary
- irreversible.
State whether the following is physical or chemical changes.
glowing of a bulb -
True or false
Change of seasons is a non-periodic change.
Fill in the blank
Heat is ________ by a gas during the process of condensation.
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
Fill in the blank with the appropriate word of the statement given below:
Germination of seeds is considered a __________ change.
Give the reason why the following is considered as chemical changes.
A bright light is seen evolved when a strip of magnesium is heated.
What kind of change is shown by tearing of paper?
Adding sugar to milk is a physical change.
