Consider the following statements regarding the nature of rocks: I. Rocks are aggregates of one or more minerals. II. Granite is softer than soapstone. III. Gabbro is black and quartzite can be milky white. IV. Sedimentary rocks are related to foliation. Which of the statements given above are not correct?
II and IV
Statement I is correct, as rocks are indeed aggregates of one or more minerals. Statement III is correct, as gabbro is a dark/black igneous rock and quartzite can appear milky white. Statement II is incorrect, since granite is far harder than soapstone, which is one of the softest rocks. Statement IV is incorrect, as foliation is a texture found in metamorphic rocks, not sedimentary rocks. Hence, statements II and IV are not correct.
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