What is tin disease, tin pest or tin plague ?

Tin plague is

What is tin cry ?

The tin plague or tin pest or tin disease refers to

Tin plague means

Black tin is:

The current of 2 A is passed for 5 h through a molten tin salt to deposit 22.2 g tin. What is the oxidation state of tin in salt? [Atomic weight of Sn=118.69 g ]

A current of 2.0 ampere is passed for 5.0 hour through a molten tin salt to deposit 22.2 g tin. What is the oxidation state of tin in salt? Atomic wt. of Sn = 118.69 g .