| Consider the following statements with respect to volcanoes: |
| 1. A volcano is an opening in the earth's crust through which molten rock, ashes, stream etc. are rejected. |
| 2. Most of the volcanoes of the world are the result of plate tectonics |
| 3. Lava and magma is the same thing with respect to volcanic eruptions. |
| 4. A volcanic cone usually has a funnel shaped depression at its mouth which is known as a crater |
| Which of the above statements is/are correct? |
A) 1, 2 and 3 only
B) 2, 3 and 4 only
C) 1, 2 and 4 only
D) 3 and 4 only
Correct Answer: C
Solution :
[c] Molten material within the earth is known as magma. Magma becomes lava when it comes out of the earth's interior and spreads over the surface.
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