Which of the following ores is in the form of carbonate?

What type of compounds are formed when reactive metals like sodium and potassium react with dihydrogen?

Heating of carbonate ores in the absence of air to convert them into oxides is known as:

Name the following:
$(a)$ $A$ metal which is preserved in kerosene.
$(b)$ $A$ lustrous coloured non-metal.
$(c)$ $A$ metal which can melt while kept on palm.
$(d)$ $A$ metal which is a poor conductor of heat.

What are the components of bronze?

By which method is aluminum metal obtained by the reduction of alumina?