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प्रश्न
Tick (√) the correct alternative from the choice given for the following statement.
A substance which can not sublime is
पर्याय
iodine
camphor
sugar
dry ice
उत्तर
sugar
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संबंधित प्रश्न
What are reversible and irreversible changes ? Give one example for each.
True or false
Is the process of digestion a physical change?
Classify the Following as a Physical Or a Chemical Change.
Formation of Clouds
Distinguish between the following.
Physical change and chemical change
Name the following:
The final product of the physical change involved during the ‘melting of a piece of wax’.
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
Drying of a fruit
Name the following.
A form of energy required for a chemical change.
Assertion: Burning of wood log to charcoal is a physical change.
Reason: The products formed of burning a piece of wood can be easily converted back to wood log.
Give two examples for each of the following cases:
Physical changes which are not reversible.
