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Igneous Rocks

Here are some multiple-choice questions to test your understanding:

 

1. “Rocks that have formed by cooling of molten magma are called igneous rocks. All these rocks have …………… textures.” The missing word is:

Crystalline
Fragmental
Rough

2. What property of granite makes it a good material to use for gravestones?

It contains several different minerals
It is hard and resistant to weathering
It is rough and can be used as an abrasive

3. What property of basalt makes it a good material to use for road surfaces?

It is hard and resistant to weathering
It is dark in colour
It can be polished to look attractive

4. What property of gabbro makes it a good material to use for worktops?

When broken it has a rough surface
It contains several different minerals
It can be polished to look attractive

5. Igneous rocks like granite are often used for street paving and kerb stones in city centres because:

They are hard and do not wear away easily
They contain several different minerals
They can be polished to look attractive
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