Which gas accumulates at the anode after electromagnetic decomposition of alumina?

Oxides commonly occur in metals?

is silica?

What substance is formed by the action of chlorine gas on dry quenched lime?

Which is the first metal used by humans?

Is gas given with oxygen to patients for diagnosis of breathing problem?

What type of acid is found in curd?

It is easy to make stone by beating metals. Which property of the metal does it indicate?