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प्रश्न
Tick (√) the correct alternative from the choice given for the following statement.
A substance which can not sublime is
विकल्प
iodine
camphor
sugar
dry ice
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उत्तर
sugar
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संबंधित प्रश्न
Which of the following are chemical changes?
- Growth of a plant
- Rusting of iron
- Mixing of iron fillings and sand
- Cooking of food
- Digestion of food
- Freezing of water
- Burning of candle
Classify the following changes as physical or chemical: curdling of milk
Classify the following as physical or chemical changes :
- Cooking of food
- Boiling of water
- Cutting of trees
- D0issolving salt in water
- Digestion of food
- Melting of ice
Fill in the blank.
There is no change in the _____________of the substance during a physical change.
Photosynthesis is a natural process by which green plants manufacture food in the presence of sunlight.
State the conclusions which can be drawn, to represent photosynthesis as a physical or a chemical change.
Select the chemical changes from the following list of changes
The carbon cycle.
Assertion: The explosion of fire cracker is a physical change.
Reason: A physical change is a reversible change.
When solute is dissolved in a solvent it forms a solution.
Which of the following is a physical change?
Give two examples for the following case:
Physical changes which are reversible
