Advertisements
Advertisements
प्रश्न
Write true or false
Decomposition of leaves is a fast change.
पर्याय
True
False
Advertisements
उत्तर
False.
Decomposition of leaves is a slow change.
APPEARS IN
संबंधित प्रश्न
Ripening of fruits is a desirable change.
What role does energy play in initiating a chemical change ?
Classify the following changes as physical or chemical:- melting of a solid (wax)
Fill in the blank
Revolution of the earth around the sun is a ________ change.
Tick (√) the correct alternative from the choice given for the following statement.
A substance which can not sublime is
Classify the following as a physical or a chemical change.
Melting of wax
State the observations seen, when milk in a dish is kept aside for a few hours or more. Is the change which occurs – a physical change or a chemical change. Give reasons.
Select the correct answer from the choice given below to complete the sentence
A change in which a substance retains its identity is a
______ change.
Match the examples of changes in List I with the correct type of change in List II.
| List I | List II |
| 1. Burning of paper | A: Physical change |
| 2. The ringing of an electric bell | B: Chemical change |
| 3. Curdling of milk | |
| 4. Electric light is switched on | |
| 5. Melting of butter |
Adding sugar to milk is a physical change.
