# Surveying Questions and Answers – Contouring – Methods and Characteristics

This set of Surveying Question Bank focuses on “Contouring – Methods and Characteristics”.

1. What is the term used for an imaginary line on the ground joining points of equal elevation?
a) Level line
b) Line of sight
c) Datum
d) Contour

Explanation: A Contour is an imaginary line on the ground joining the points of equal elevation. It is a line in which the surface of the ground is interested in a level surface.

2. Which of the following lines, in which surface of the ground is intersected by a level surface?
a) Level line
b) Line of sight
c) Datum
d) Contour

Explanation: A Contour is an imaginary line on the ground joining the points of equal elevation. It is a line in which the surface of the ground is interested in a level surface.

3. A Contour line is a line on the map representing a contour.
a) True
b) False

Explanation: A Contour is an imaginary line on the ground joining the points of equal elevation. It is a line in which the surface of the ground is interested in a level surface. A Contour line is a line on the map representing a contour.

4. Which of the following is not used to represent the relative altitudes of the points on the map?
a) Contour lines
b) Hachures
d) Level lines

Explanation: On a plan, the relative altitudes of the points can be represented by shading, Hachures, form lines or contour lines. Out of these, contour lines are most widely used because they indicate the elevations directly.

5. Which of the following indicates the elevations directly?
a) Level line
b) Line of sight
c) Datum
d) Contour

Explanation: A Contour is an imaginary line on the ground joining the points of equal elevation. It is a line in which the surface of the ground is interested by a level surface. On a plan, the relative altitudes of the points can be represented by shading, Hachures, form lines or contour lines. Out of these, contour lines are most widely used because they indicate the elevations directly.
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6. The vertical distance between any two contours is called a contour interval.
a) True
b) False

Explanation: The vertical distance between any two consecutive contours is called a contour interval. The contour interval is kept constant for a contour plan.

7. The horizontal distance between two points in two consecutive contours is known as the vertical equivalent.
a) True
b) False

Explanation: The horizontal distance between two points in two consecutive contours is known as the horizontal equivalent. It depends on the steepness of ground.

8. For every flat ground, a small contour interval is necessary.
a) True
b) False

Explanation: A contour interval chosen for a flat ground will be highly unsuitable for undulated ground. For every flat ground, a small interval is necessary.

9. If the ground is more broken, greater contour interval should be adapted.
a) True
b) False

Explanation: A contour interval chosen for a flat ground will be highly unsuitable for undulated ground. If the ground is more broken, greater contour interval should be adapted.

10. The contour interval should be inversely proportional to the scale.
a) True
b) False

Explanation: If the scale is small, the contour interval should be large. If the scale is large, the contour interval should be small.

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