4)

has got hands and feet, the others are only faces
2)

for being an effect item and so on... is it that easy?

1)

has nothing to do with the "junk food" family -

is part of the quest leading to this family,

are part of the family,

is part of a family unlocked by a quest which needs junk food for completing it...
5)

doesn't appear as an object in the real life; the others do.
Ok... let's stop here... I guess that 2 and 4 are correct, 1 and 5 are not