The hot molten material occurring naturally below the surface of the Earth is called:(a) Lava(b) Slag(c) Magma(d) TuffI had been asked this question in class test.This is a very interesting question from Source and Classification of Stones topic in chapter Materials for Construction of Basic Civil Engineering

The hot molten material occurring naturally below the surface of the E

1.	The hot molten material occurring naturally below the surface of the Earth is called:(a) Lava(b) Slag(c) Magma(d) TuffI had been asked this question in class test.This is a very interesting question from Source and Classification of Stones topic in chapter Materials for Construction of Basic Civil Engineering
Answer» RIGHT answer is (C) Magma For EXPLANATION: Hot molten material is called Lava when it erupts from a volcano and reaches the surface. Slag is waste material from the smelting of ore. TUFF is a POROUS rock formed by a consolidation of volcanic ash.

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