Subject :NSO Class : Class 6
Subhi, a class 6 student grouped together a few changes occurring around us as:
Group 1 : Blooming of flowers, breaking of glass, vaporisation of water, sawing of wood
Group 2 : Tides in the ocean, motion of a swing, landslides, occurrence of day and night
Group 3 : Rusting, germination of seeds, burning of fire crackers, growth of a child
Group 4 : Making a paper boat, blowing air into balloon, baking a roti, heating an iron rod
Select the odd one in each group and mention the property which makes it odd.
| Group 1 | Group 2 | Group 3 | Group 4 | |
|---|---|---|---|---|
| A | Blooming of flowers (Physical change) |
Tides in the ocean (Periodic change) |
Rusting (Chemical change) |
Making a paper boat (Physical change) |
| B | Breaking of glass (Irreversible change) |
Occurrence of day and night (Natural change) |
Germination of seeds (Irreversible change) |
Blowing air into balloon (Reversible change) |
| C | Sawing of wood (Physical change) |
Motion of a swing (Periodic change) |
Growth of a child (Irreversible change) |
Heating an iron rod (Chemical change) |
| D | Vaporisation of water (Reversible change) |
Landslides (Nonperiodic change) |
Burning of fire crackers (Fast change) |
Baking a roti (Chemical change) |
Ans 1:
Class : Class 6
Question is not properly framed