Question
What colours are used by the Survey of India on topographic sheets?
Solution
The Survey of India used seven standard colours to depict the distributional pattern of land use on topographic sheets.
1. Red colour - For buildings and roads.
2. Yeliow colour - For cultivated area.
3. Green colour - For forests.
4. Blue colour - For water bodies.
5. Black colour - For lettering boundaries and railways.
6. Brown colour - For contours.
7. Grey colour - For hill-shading.
