The GATE Grind

GATE 2023 MN – Question 24

Mining Geology, Mine Development and Surveying · Mine Surveying · 1 mark · Multiple choice

Match P isopachs, Q isotherms and R isoclines with contours of 1 slope, 2 thickness and 3 temperature.

  1. P–1; Q–3; R–2
  2. P–3; Q–1; R–2
  3. P–2; Q–3; R–1
  4. P–2; Q–1; R–3

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Show answer and explanation

Correct answer: (C) P–2; Q–3; R–1

Explanation

Isopachs join equal thickness; isotherms join equal temperature; isoclines join equal inclination or slope. These definitions give P–2, Q–3, R–1, C. The shared “iso” prefix means equal, while each suffix identifies the mapped property.

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