General Knowledge - Chemistry - Discussion
Discussion Forum : Chemistry - Section 1 (Q.No. 8)
8.
The oldest rocks in the earth's crust were once molten, and came from deep inside the earth. The molten rock, called magma, spewed out in volcanic eruptions during the earth;s early life and solidified into hard rock's called
Discussion:
18 comments Page 1 of 2.
Pratap said:
7 years ago
Extrusive igneous rocks cool and solidify quicker than intrusive igneous rocks. They are formed by cooling of molten magma on the earth surface. The magma, which is brought to the the surface through fissures or volcanic eruptions, solidified at a faster rate. That's the reason
(2)
Sandhya said:
8 years ago
Give an information about the formation of 3 types of rocks and differentiate forming processes.
(1)
Mantosh Prasad said:
9 years ago
Yes, C is the correct answer because igneous rock is obtained from molten magma.
Afe godstime said:
7 years ago
Please tell me, what is a volcanic eruption?
Yemi said:
7 years ago
Please explain about granite and basalt.
Srikanth said:
7 years ago
C is the correct answer. I agree with the given answer.
Sharon said:
8 years ago
Why the sedimentary rocks is not correct?
Explain.
Explain.
Nitesh said:
8 years ago
Suppose our answer is C but sedimentary rocks are already hard.
Sudhakeerthu said:
9 years ago
Igneous rocks is the correct answer. I agree.
Ankita said:
1 decade ago
Is one of the three main rock types, the others being sedimentary and metamorphic rock. Igneous rock is formed through the cooling and solidification of magma or lava. Igneous rock may form with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks. This magma can be derived from partial melts of pre-existing rocks in either a planet's mantle or crust.
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