What are the components of bronze?

Two ores $A$ and $B$ were taken. On heating, ore $A$ gives $CO_2$, whereas ore $B$ gives $SO_2$. What steps will you take to convert them into metals?

Why do ionic compounds not conduct electricity in the solid state?

What is the chemical formula for potassium dichromate?

Which furnace is used to extract iron metal from its ore?

Metals are refined by using different methods. Which of the following metals are refined by electrolytic refining?
$(i)$ $Au$
$(ii)$ $Cu$
$(iii)$ $Na$
$(iv)$ $K$