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प्रश्न
Fill in the blank with the correct word of the statement given below:
Sublimation involves a __________ change.
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उत्तर
Sublimation involves a physical change.
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Dissolving common salt in water.
Tick the most appropriate answer.
5. Photosynthesis requires
- heat energy.
- wind energy
- sunlight.
- sound energy
Tick (√) the correct alternative from the choice given for the following statement
Which one of the following is volatile in nature ?
Tick (√) the correct alternative from the choice given for the following statement.
An example of both physical and chemical change is
A physical change is temporary. Explain.
Which of the following are chemical changes ?
- decaying of wood
- burning of wood
- sawing of wood
- hammering of nail into wood
Fill in the blanks with the appropriate words of the statement given below:
Heating a piece of iron is considered a __________ change while heating a piece of coal [carbon] is considered a ___________ change.
Select the chemical changes from the following list of changes
Preparation of carbon dioxide from calcium carbonate & dilute hydrochloric acid.
Water is the universal solvent. Why?
Give two examples for the following case:
Physical changes which are not reversible
