Question

Answer question numbers 3.1-3.4 on the basis of your understanding of the following
paragraph and the related studied concepts.
Metals occur in nature in the free as well as in the combined state. The less reactive metals are
generally found in the free state. Most of the metals, however are found in the combined form as
minerals. The minerals from which metals can be obtained on a commercial scale are called ores. In
other words, the minerals from which metals can be extracted profitably are called ores. Thus, bauxite
(Al2o3.2H2O) and clay (Al2 03.2si02.2H20) are minerals of aluminium. However, it is bauxite that
is chiefly used to obtain aluminium commercially. So, bauxite, and not clay, is an ore of aluminium.
3.1 Which metal occurs in native state?
3.2 Write the name of the sulphide ore?
3.3 What is native of Halide ore?
3.4 Which is the most abundant metal on the earth's crust?​
in which company sample papers book can we get this question.our test papers are coming in this fomat only

Answer 1

Answer:

3.1 Ag

3.2 Galena

3.3 Horn silver

3.4 Aluminium

Answer 2

3.1) . Gold , Silver and Platinum are some metals that occur in native states .

3.2) . Galena and Cinnabar are most famous sulphide ores of lead and mercury respectively .

3.3) . Metallic halides are native of halide ore . Horn Silver is an example of halide ore .

3.4) . Aluminium is the most abundant metal on the earth's crust .