Neco Model Questions Vol1 2025 Geography Question 6

Practice essay / theory question 6 from the 2025 Neco Model Questions Vol1 Geography examination. This question covers Rocks .

Neco Model Questions Vol1 2025 Geography Essay / Theory
Topic: Rocks
Question 6 NECO_MODEL_QUESTIONS_VOL1 • 2025 • GEOGRAPHY • essay

A geologist examined three rock samples collected from different locations on the Jos Plateau. The observations for each sample are given below. Sample A: Coarse‑grained, interlocking crystals of quartz and feldspar visible to the naked eye; hardness 6–7 on the Mohs scale. Sample B: Fine‑grained, dark, foliated rock that splits easily into thin sheets; contains abundant mica and chlorite. Sample C: Massive, porous rock composed mainly of calcium carbonate; contains fragmented shell fossils and feels relatively soft. Answer the following questions:

Question Parts

( a )
Classify each sample as igneous, sedimentary, or metamorphic.
( b )
Explain the principal formation process for each rock type identified in part (a).
( c )
Discuss the suitability of each rock for use as a building material, giving one advantage and one limitation for each.
( d )
Considering the semi‑arid climate of the Jos Plateau (marked seasonal temperature variation and occasional heavy rain), evaluate which of the three rocks is most susceptible to weathering and explain why.

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About This Question

This is Neco Model Questions Vol1 2025 Geography Question 6. It is one of the essay questions from the 2025 Neco Model Questions Vol1 Geography examination.

The question covers Rocks .

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