6. Rolling of chapati and baking of chapati are the changes that
can be reversed and cannot be reversed, respectively
Explanation for correct option:
(C) Rolling of chapati is a reversible change as the rolled chapati can be reversed back to the dough. But baking of chapati is an irreversible change, as the baked chapati cannot be reversed back to the dough.
Explanation for incorrect options:
(A) Both changes cannot be reversed because baked chapati cannot be reversed back to the dough.
(B) Both the changes are not irreversible because rolled chapati can be reversed back to dough.
(D) Rolling of chapati is not an irreversible change, as rolled chapati can be reversed back to the dough.
Hence, option (C) is correct.