Conventional Signs MCQs Quiz | Class 9
This online quiz is for Class 9 students studying NCC (Code 076), focusing on Army Unit 3: Map Reading. It covers important topics such as conventional signs, symbols, map legends, and their interpretation. Attempt all the multiple-choice questions and click ‘Submit Quiz’ to see your score, review your answers, and download a PDF of your answer sheet.
Understanding Conventional Signs in Map Reading
Conventional signs and symbols are the language of a map. They are small, standardized symbols used on maps to represent various natural and man-made features of the Earth’s surface. For an NCC cadet, mastering these signs is fundamental to successful map reading, navigation, and planning during training and operations.
Why are Conventional Signs Important?
- Clarity and Simplicity: They allow a vast amount of information to be packed into a small space without cluttering the map.
- Standardization: The signs are standardized (usually by a national survey agency like the Survey of India), ensuring that any trained person can read any map from that series.
- Quick Interpretation: Once learned, these symbols allow for a rapid understanding of the terrain, infrastructure, and resources of an area.
Key Categories of Conventional Signs
Conventional signs can be broadly grouped by the colors used to represent them, which is a key part of the map’s legend.
| Color | Represents | Examples |
|---|---|---|
| Blue | Water Bodies | Rivers, streams, lakes, wells, tanks. |
| Green | Vegetation | Forests, jungles, orchards, scattered trees, scrub. |
| Brown | Relief and Landforms | Contour lines, sand dunes, hills. |
| Red | Man-made Features (Major) | Metalled roads, grid lines, permanent huts, settlements. |
| Black | Boundaries & Specific Features | Railway lines, telephone lines, unmetalled roads, names, temples, forts, PO (Post Office). |
| Yellow | Cultivated Land | Agricultural areas, farmlands. |
Interpreting the Map Legend
The map legend, or key, is the most crucial part of interpreting conventional signs. It’s a box usually found at the bottom or side of the map that lists all the symbols used and explains what each one means. Before starting any map reading exercise, an NCC cadet must first study the legend thoroughly to understand the specific symbols used on that particular map sheet.
Quick Revision Points
- A single blue line represents a stream; a double blue line with a blue fill represents a river.
- A small black square with a flag on top represents a Police Station (PS).
- Contour lines are brown and connect points of equal elevation.
- A thick red line indicates a major, metalled road. A double dashed black line indicates an unmetalled road or track.
- ‘PO’ stands for Post Office, ‘DB’ for Dak Bungalow, and ‘PS’ for Police Station.
- Triangulated height is shown with a small triangle and a number (e.g., ▲240).
Extra Practice Questions
- What does the symbol of a small circle with a cross on top represent?
- How is a ’causeway’ or ‘motorable in dry season’ road depicted on a map?
- If you see a series of small black dots in a line, what might it represent?
- What is the difference in the symbol for a metalled road and an unmetalled road?
- How would you identify an area of ‘broken ground’ on a topographical map?
