Question 1:

Which mineral is known for its hardness and ability to scratch glass?

Question 2:

Which mineral exhibits a metallic luster and is a major source of iron?

Question 3:

Which mineral has a chemical composition of SiO2 and is one of the most abundant minerals in Earth's crust?

Question 4:

Which mineral effervesces or fizzes when it comes into contact with hydrochloric acid?

Question 5:

Which mineral is used as a building material due to its softness and ability to be easily carved?