Which material is used to make sonorous articles?
Metal
All the above
Metalloid
Non-metal
Metals produce sound after hitting (Sonorous).
Why are metals sonorous and non metals are non sonorous?
The three elements having chemical symbols of Si, B and Ge are :
(a) all metals (b) all non-metals
(c) all metalloids (d) Si is metalloid, B is metal and Ge is non-metal