Question

1. which mineral is magnetic?

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

1. which mineral is commonly used in drywall?

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

1. which mineral is the main source of iron?

a. hematite
b. galena
c. quartz
d. fluorite

1. what is fracture in minerals?

a. breaking unevenly or irregularly
b. splitting along smooth planes
c. resistance to scratching
d. crystal shape

1. which mineral is often used in jewelry, watches and glass?

a. quartz
b. talc
c. halite
d. gypsum

1. which mineral is the main source of lead?

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

Explanation:

Question 12

Magnetite is a mineral known for its magnetic properties. Quartz, Feldspar, and Gypsum are not magnetic.

Gypsum is commonly used in the production of drywall (plasterboard). Talc, Halite, and Calcite have different uses and are not typically used in drywall.

Hematite is a major ore of iron and is the main source of iron among the given options. Galena is a lead ore, Quartz is a silica - based mineral, and Fluorite is used for other purposes.

Answer:

B. Magnetite

Question 13