Advertisements
Advertisements
प्रश्न
Classify the following as a physical or a chemical change.
Drying of wet clothes
उत्तर
Physical change
APPEARS IN
संबंधित प्रश्न
Tick (√) the correct alternative from the choice given for the following statement.
The compound rust is a hydrated oxide of
True or false
Dissolving of a solid in liquid is a physical change.
Classify the following as physical or chemical change :
Condensation of steam
Distinguish between the following.
Physical change and chemical change
Match the examples of changes in List I with the correct.
| List I | List II |
| 1. Expansion of a steel rod on heating | A: Physical change |
| 2. Rotting of eggs | B: Chemical change |
| 3. Milk turning sour | |
| 4. Tarnishing of copper | |
| 5. Separation of naphthalene from a mixture of naphthalene and sodium chloride. |
State which of the following pertain to – chemical changes.
(a) Substance retains its identity
(b) The change is permanent
(c) No new substance is formed
(d) Is easily reversible
(e) Produces one or more new substances by a change in its composition
(f) The change is temporary
(g) The composition and properties of the original substance are not altered.
Name the following.
The salt obtained when a chemical change takes place on the addition of iron to dilute sulphuric acid.
Name the following.
The gaseous product of the chemical change which takes place during respiration in living organisms.
You are given some candle wax. Can you make a candle doll from it? What kind of change is this?
When a woolen yarn is knitted to get a sweater, the change can be classified as ____________.
