Question

The combined state of metals are called-
A. Mineral
B. Gangue
C. Flux
D. Native form

Answer 1

Hint- In order to solve this question, firstly we will understand the given concept i.e. metals and its combined state. Then we will compare all the concepts given as options to find the required answer.

Complete answer:
The metals found in nature occur within the free or combined state it's generally referred to as pure metals. A native metal is a metal found in a metallic state naturally. It can be in the pure form or in the form of an alloy.
Mineral- Minerals are substances that are formed naturally within the earth. Minerals are usually solid, inorganic, have a crystal structure, and are formed naturally by geological process. A mineral may be a solid compound that happens naturally in pure form.
Gangue- it's sand, rock and other impurities surrounding the minerals of interest in an ore. It is the combined state of the metal. Gangue minerals associated with sulfide-rich tailings include various aluminosilicate minerals such as chlorite, biotite, pyroxene.
Flux- It is a chemical cleaning, flowing or purifying agent. It is the substance added to the molten metals to bond with impurities that can be removed. It is a substance used to promote fusion (as of metals or minerals)
Native form- Native element, any number of chemical elements that may occur in nature uncombined with other elements. A native metal is any metal that's found pure in its metallic form in nature.
Therefore, we conclude that the combined state of metals is called gangue.

Hence, option B is correct.

Note- While solving this question, we should also know that potassium, sodium, calcium, magnesium, aluminum, zinc, iron are the metals found in combined states. Also we must know all the properties of metals to solve similar types of questions.