Class 8 Science Online Tests
Igneous Rocks MCQ (Multiple Choice Questions) PDF Download
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The MCQ: Obsidian is rich in; "Igneous Rocks" App Download (Free) with answers: Silica; Iron; Cobalt; Calcium; to learn online school courses. Solve Rock Cycle Quiz Questions, download Apple eBook (Free Sample) for online school courses.
Igneous Rocks MCQ (PDF) Questions Answers Download
A crystalline or glassy rock formed when magma or lava cools down and solidifies is called
- sedimentary rocks
- metamorphic rocks
- igneous rocks
- morphic rocks
Obsidian is rich in
- silica
- iron
- cobalt
- calcium
A rock which is formed after lava eruption is called
- Basalt
- granite
- sandstone
- limestone
A stone which is used to sooth skin is glassy volcanic rock formed from lava froth is
- obsidian
- pumice
- basalt
- granite
Iron-rich igneous rocks are denser than rocks which are rich in
- silica
- Sulphur
- cobalt
- calcium
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