MCQ
Swati classified a few changes occurring around us as shown in the table.
Which of the changes is/ are classified correctly$?$
|
S.No.
|
Changes
|
Type
|
|
$1.$
|
Sharpening of pencil.
|
Physical, reversible.
|
|
$2.$
|
Evaporation of water.
|
Physical, irreversible.
|
|
$3.$
|
Opening of a bud.
|
Chemical irreversible.
|
|
$4.$
|
Rusting of iron.
|
Chemical reversible.
|
- A$2$ and $3$ only.
- B$3$ and $4$ only.
- C$1$ and $4$ only.
- ✓$3$ only.