BGYET-147 · June 2025 · English
IGNOU BGYET-147 June 2025 Previous Year Question Paper
GEOMORPHOLOGY AND GEOTECTONICS
Structured previous year question paper for BGYET-147, June 2025 session.
Max marks: 50 · Questions: 4
Verified: 10 Aug 2026
BACHELOR OF SCIENCE
(GENERAL) (BSCG)
Term-End Examination
June, 2025
BGYET-147 : GEOMORPHOLOGY AND
GEOTECTONICS
Time : 2 Hours Maximum Marks : 50
Note: All questions are compulsory. Marks
allotted for each question are indicated
against it. Draw well-labelled diagram,
wherever necessary.
Q1.Briefly answer any five of the following questions : 5x2=10
(a) Define Digital Elevation Model (DEM).
(b) What are mid-oceanic ridges ?
(c) Differentiate between convex floodplain and flat floodplain.
(d) What is a composite cone ?
(e) Name any four chemical reactions involved in decomposition of rocks.
(f) What are continental platforms ?
(g) What is magnetic declination ?
(h) Define geomagnetic polarity. @ List the types of plate boundaries. G) List the main proterozoic basins of Peninsular India.
Q2.Write short notes on any four of the following : 4x5=20
(a) Indo-Gangetic plain
(b) Landforms developed along the convergent plate boundaries
(c) Biological weathering
(d) Epeirogenic movements
(e) Difference between continental and oceanic crust
(f) Natural remanent magnetization
(g) Hotspots
(h) Rift valley
Q3.Answer any one of the following: 1x10=10
(a) Discuss in detail the processes operating at divergent plate boundaries.
(b) Give an account of the Proterozoic mobile belts of Peninsular India.
Q4.What is chemical weathering ? Discuss the chemical weathering processes. 10
(a) Describe any four major river basins of India. 5
(b) Discuss about the types of gravitational springs.