Which one of the following is a non-ferrous metal ?

Which is the outer most layer of earth?

Aluminium, Calcium, Silica, Iron, Magnesium are the major elements of ?

Which of the following is the most important component of sand and granite ?

Sedimentary rocks are classified into how many groups ?

The mineral that constitues 4% of the earth's crust is?

Which mineral is used in jewellery ?

Which one of the following is organically formed ?

The elements in the earth's crust,which, are rarely found exclusively but are usually combined with other elements to make various substances. These substances are called as ?

The element present in largest amount in rocks and minerals is