Geology and Geophysics
2019 · Paper 1
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Complete GATE GG-1 2019 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 43–45 of 65. Imported answers require review unless explicitly marked reviewed.
Question 33
Open questionPART-B SECTION-1MCQ2 marksNeeds review
Choose the CORRECT combination for the following two statements.
Statement I: Four elements that make up about 90% of the bulk Earth are Fe, O, Si and Mg (in decreasing order of wt % abundance).
Statement II: The four most abundant elements in the Earth’s crust (in decreasing order of wt % abundance) are O, Si, Al and Fe.
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Open questionPART-B SECTION-1MCQ2 marksNeeds review
Choose the CORRECT combination for the following four statements.
Statement I: Anhydrous partial melting of peridotites produces basic magma.
Statement II: Hydrous melting of peridotites produces andesitic magma.
Statement III: Congruent melting of minerals produces liquids of compositions identical to the minerals.
Statement IV: Incongruent melting of minerals produces liquids of different compositions and new solids.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 35
Open questionPART-B SECTION-1MCQ2 marksNeeds review
The value of salinity, in terms of wt.% NaCl equivalent, of an aqueous saline bi-phase liquid-vapor fluid inclusions is determined by measurement of ______ during microthermometry.
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