Question

Q21.A flag pole 35m high
casts a shadow 12m long. Find
the distance of the top of the
pole from the far end of the
shadow​

Answer 1

Answer:

The corrosion of silver can be easily recognized by the blackish layer of silver sulphide that covers the surface of the silver metal. Silver reacts with Sulphur to form silver sulphide that corrodes the metal. The original silver metal can be re obtained by removing the layer of silver sulphide.