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प्रश्न
Give reasons for the following
Extrusive rocks generally have small crystals.
उत्तर
Extrusive rocks generally have small crystals because in the formation of these rocks, the solidification of magma takes place at a slower rate.
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संबंधित प्रश्न
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granite
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| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
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| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
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