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प्रश्न
Fill in the blank.
The process of a liquid changing into a solid is called ________
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उत्तर
The process of a liquid changing into a solid is called freezing.
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संबंधित प्रश्न
Photosynthesis cannot take place at night.
What role does energy play in initiating a chemical change ?
Fill in the blank
Chemical change occurs as a result of __________ between two substances.
State whether the following is physical or chemical changes.
mixing oil with water —
True or false
Is melting of ice a reversible change?
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
Classify the following as a physical or a chemical change.
Burning of coal
Given reason:
Burning of paper is a chemical change.
Name the following:
The final product of the physical change involved during the ‘melting of a piece of wax’.
Physical Change: Boiling::Chemical Change: ______.
