A few changes are given in the listed 
i) Cutting of hair                          
ii) Melting of Ice bar 
iii) Adding baking powder to vinegar
iv) Spoiling of food                     
v) Bending of a piece of metal on heating
vi) Decomposition of old leaves vii) Shredding of paper
Which of the following represents? Their correct classification?

Physical (Irreversible) - i, vi
Physical(Reversible) - v, vii
Chemical(Irreversible) - ii, iii, iv

Physical (Irreversible) - i, vii
Physical(Reversible) - ii, v
Chemical(Irreversible) - iii, iv, vi

Physical (Irreversible) - ii, iii
Physical(Reversible) - i, iv
Chemical(Irreversible) - v, vi, vii

Physical (Irreversible) - ii, v
Physical(Reversible) - i, vii
Chemical(Irreversible) - iii, iv, vi