Previous Year Question Paper (2025)
2025
GEOGRAPHY — HONOURS
Paper : DSCC-8
(Cartographic Techniques)
Full Marks : 75
Category - A
Answer any ten questions (each within 50 words):
2 × 10
1. Differentiate between a graticule and a grid.
2. What is WGS-84?
3. What is a tangential and a radial scale factor?
4. What is the length of a meridian and an equator on globe?
5. Name any one projection in which pole is represented as an arc of a circle and why?
6. Differentiate between polar and rectangular co-ordinate systems.
7. Name the map projection and datum on which open series maps are drawn.
8. Define a standard parallel.
9. What is orthomorphism?
10. Find the rectangular co-ordinates of a point Q when its polar co-ordinates are (20 m, 45°).
11. Differentiate between perspective and non-perspective projection.
12.
Write down the RF of the following Survey of India topographical map:
(a) 72
(b) 72 K
(c) 72 K/NW
(d) 72 K/10
13. Differentiate between Geoid and Spheroid.
14. What is true bearing?
Category - B
Answer any five questions (each within 150 words):
5 × 5
15. Illustrate the numbering of zones in the Universal Transverse Mercator System.
16. What are the informations given along the margins of a toposheet?
17. What is a rhumbline? How is a great circle and a rhumbline represented on a mercators projection? (3+2)
18.
Which cartographic techniques would be the best to represent the following and why? (2½+2½)
(a) Density of population
(b) Distribution of urban population.
(b) Distribution of urban population.
19. Which types of data are represented by divided proportional circles? Give examples.
20. If the measured distance from P to Q on a map A with a scale of 1 : 10,000 is 10 cms, then what would be the scale of map B, if the distance between P and Q on that map is 2 cms?
21.
Convert the following Bearings from one form to the other:
| Sl. No. | Whole Circle Bearings | Reduced Bearings |
|---|---|---|
| (a) | 122°30' | — |
| (b) | — | N 48°30' E |
| (c) | 325°40' | — |
| (d) | — | S 30°45' W |
| (e) | 68°20' | — |
Category - C
Answer any two questions (each within 500 words):
15 × 2
22. What are the characteristics of Isopleth, Choropleth and Chorochromatic maps? How does the index of Choropleth map differ from an isopleth map? (10+5)
23. What is map projection? Classify map projection on the basis of their properties. Give suitable examples. (3+12)
24. What are the properties, uses and limitations of Bonne's and Cylindrical Equal Area Projection? (7½+7½)
25. Compare the reference scheme of old and open series Topographical maps of Survey of India, highlighting the advantages and disadvantages of both. (15)