Objective Question & Answer

Statement i is incorrect: Horizontal equivalent is

the horizontal distance between two consecutive contour lines. It varies depending on the

slope of the ground (closer together for steep slopes, farther apart for gentle slopes). It is not

always  constant.

Statement ii is correct: For a vertical cliff, contour

lines coincide or run into each other at a single point or line on the map, making the horizontal

equivalent between them zero.

Statement iii is correct: Contour interval is inversely proportional to the scale of the map. A

large scale map (detailed) uses a small contour interval, while a small-scale map uses a large

contour interval to avoid clutter.

Statement iv is incorrect: For detailed design work, a small

contour interval is preferred to obtain precise elevation data.