question_answer

Swati classified a few changes occurring around us as shown in the table.   

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

Which of the changes is/are classified correctly?                             

A)  2 and 3 only   

B)  3 and 4 only    

C)         1 and 4 only   

D)         3 only