1. 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.
2. 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.
3. Two contour lines of different elevations unite to form one line only in the case of ___________
a) Hills
b) Vertical cliff
c) Horizontal cliff
d) Overhanging Cliff
Explanation: Two contour lines of different elevations cannot cross each other. However, contour lines of different elevations can unite to form one line in case of vertical Cliff.
4. In which of the following cases contour lines of different elevations can intersect?
1) Caves, 2) Vertical cliffs, 3) Hills, 4) Overhanging Cliff
a) 1) and 2)
b) Only 1)
c) 1), 2) and 4)
d) 1) and 4)
Explanation: Two contour lines of different elevations cannot cross each other. However, contour lines of different elevations can intersect only in case of an overhanging Cliff and a cave.
5. Two contour lines of different elevations cannot cross each other.
a) true
b) false
Explanation: Two contour lines of different elevations cannot cross each other. If they did, the point of intersection would have two different elevations which are absurd.
6. Contour lines close together indicate _______ slope.
a) Steep
b) Gentle
c) Uniform
d) Undulated
Explanation: Contour lines close together indicate steep slope. They indicate a gentle slope if they are far apart.
7. A series of straight parallel and equally spaced contours represent ________
a) Hills
b) Ponds
c) Plane surface
d) Desert
Explanation: A series of straight, parallel and equally spaced contours represent a plane surface. Equally spaced represent uniform slope.
8. A Contour passing through any point is parallel to the line of steepest slope at that point.
a) true
b) false
Explanation: A Contour passing through any point is perpendicular to the line of steepest slope at the point. This agrees with since the perpendicular distance between contour lines is the shortest distance.
9. A closed contour line with one or more higher ones inside to represent _____.
a) Hill
b) Pond
c) River
d) Cliff
Explanation: A closed contour line with one or more higher ones inside to represent a hill. Similarly, closed contour line with one or more lower ones inside it indicates a depression without an outlet.
10. To contour lines having the same elevations cannot unite and continue as one line.
a) true
b) false
Explanation: To contour lines having the same elevations cannot unite and continue as one line. Similarly, a single contour cannot split into two lines.