Allied & ICAR Exam Bank • ALLIED_1936 MCQ • 2 Marks

Section 8: General Aptitude

Quantitative Aptitude

Subtopic: Ratios & Percentages

Question Statement:

A river catchment area of 400 km$^2$ is represented by 16 cm$^2$ on a survey map. The scale factor (RF) of the map is:

Options:

  • (A) 1:500,000
  • (B) 1:250,000
  • (C) 1:1,000,000
  • (D) 1:200,000

Answer Key:

A

Step-by-Step Solution & Explanation

Area ratio $= 16 \text{ cm}^2 / 400 \text{ km}^2 = 1 \text{ cm}^2 / 25 \text{ km}^2$. Linear ratio $= 1 \text{ cm} / 5 \text{ km} = 1 / 500,000$.
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