Question

plzz helpp all then only i will mark u plzzz it should be correct no random answers ​

Answer 1

Answer:

2.d)

3.c)

4.a) Iron metal reacts in moist air by oxidation to give a hydrated iron oxide. This does not protect the iron surface to further reaction since it flakes off, exposing more iron metal to oxidation. This process is called rusting and is familiar to any car owner.

Answer 2

Answer:

Fe+CuSO4 ⟶FeSO4 +Cu