Question

1. which mineral is commonly used in ceramics and glass?

a. feldspar
b. talc
c. halite
d. calcite

1. which mineral is used in plaster of paris?

a. gypsum
b. quartz
c. calcite
d. feldspar

1. which mineral is known as \fools gold\?

a. pyrite
b. magnetite
c. hematite
d. galena

Explanation:

Question 18

Feldspar is a common mineral used in ceramics and glass production due to its properties that help in the melting and shaping processes. Talc is used in cosmetics and lubricants, Halite is table salt, and Calcite has other industrial uses. So the correct option is A.

Plaster of Paris is made from gypsum. When gypsum is heated and then rehydrated, it forms plaster of Paris. Quartz is used in electronics, Calcite in construction (lime), and Feldspar in ceramics/glass. So the correct option is A.

Pyrite has a golden, metallic luster that resembles gold, hence the nickname "fool’s gold". Magnetite is magnetic, Hematite is red - brown, and Galena is lead - gray. So the correct option is A.

Answer:

A. Feldspar

Question 19