Question

d. Shale
a. Pumice
c. Granite
b. Chemical changes
d. All of these
2. Which of these is an igneous rock that is smooth and glassy?
3. Which of these leads to formation of metamorphic rocks?
4. Which of these minerals are used to make building materials?
c. Cobalt and Gold d. All gemstone
b. Obsidian
a. Physical changes
C. Effects of heat and pressure on rocks
a. Magnetite and bauxite
b. Limestone and quartzite
C. Gypsum and calcite
5. Which of these materials can be used to make a magnet?
d. Mica
a. Nickel
b. Gypsum
6. Which of these is commonly used for flooring?
d. Gneiss
a. Shale
b. Marble
C. Conglomerate
7. Which of these can be used to make a magnet?
d. Marble and shale
C. Calcite
a. Iron and Coal
b. Iron and Nickel
8. Which of these is not a gemstone?
a. Ruby
b. Emerald
C. Topaz
d. Gold​

Answer 1

Answer:

hi good morning dear....

Answer 2

please make it clear i could understand nothing