Question

33. What happens when
al Silver article is kept in the open for few days
(b) Copper nitrate undergoes heating
(c) Aluminium metal is added to dilute hydrochloric acid
(d) Molten NaCl is electrolysed
le) iron sulphate reacts with zinc metal​

Answer 1

Answer:

hi mate

Explanation:

i guess the answe is d. iton sulphate reacts with zinc metal

Answer 2

Answer:

Hey mate I think the answer is as

following :-

Silver article turns black when kept in the air because silver article reacts with sulphur compounds such as hydrogen sulphide (H2S) present in air. The phenomenon is called corrosion. For silver particularly, it is called tarnishing of silver.

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