NDA 2026 General Knowledge question
Consider the following statements with regard to igneous rocks : I. These rocks cannot be changed into metamorphic rocks. II. When molten material is cooled slowly at great depths, mineral grains tend to be very small. III. These rocks are known as primary rocks. Which of the statements given above is/are correct ?
Answer: (B)
Solution
Igneous rocks form from magma and lava and are known as primary rocks. They can be changed into metamorphic
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