Answer:
Option C= Cobalt is not used in medicine
This statement is incorrect.
Explanation:
Pyrite is an ore of gold and is used in jewelry making (correct statement)
Pyrite:
1. pyrite is yellow brass mineral.
2. its chemical composition is FeS2.
3. it is also called ore of gold
4. it is used in jewelry.
Talc:
Talc is used in paper making, plastics, and paint (correct statement)
1. it is phyllosilicate mineral in the form of sheets.
2. its chemical formula is Mg3Si4O10 (OH)2.
3. it is very important constituent of roofing material.
4. it is used in many industries like paper making, paints, electrical cables, food etc.
Quartz:
Quartz is used to make glass (correct statement)
1. its chemical formula is SiO2.
2. its large amount is used in manufacturing of ceramic and glass.
3. The second most abundant mineral found in the earth crust is also quartz.
Cobalt:
Cobalt is not used in medicine (incorrect statement)
1. Cobalt is widely used in medical field.
2. it is used in the detection of metastasis and tumor.
3. it is used in the replacement of knee and hip as a prosthetic alloys.
Minerals are very important in our daily life. They are widely used in construction material for example in the construction of buildings and roads and also in medical field.
Examples:
1. Copper is used in the electronic and electrical field.
2. Zinc is used in rust resistant metals, skin care creams. rubber paints etc.
