BGYET-141 · June 2025 · English
IGNOU BGYET-141 June 2025 Previous Year Question Paper
ORE GEOLOGY AND INDUSTRIAL MINERALS
Structured previous year question paper for BGYET-141, June 2025 session.
Max marks: 50 · Questions: 4
Verified: 10 Aug 2026
BACHELOR OF SCIENCE
(GENERAL)
(BSCG)
Term-End Examination
June, 2025
BGYET-141 : ORE GEOLOGY AND
INDUSTRIAL MINERALS
Time : 2 Hours Maximum Marks : 50
Note: All questions are compulsory. Marks
allotted for each question are indicated
against it. Draw well-labelled diagrams,
wherever necessary.
Q1.Briefly answer any five of the following questions : 5x2=10
(a) Deposits formed at cratonic rift systems
(b) Ore deposits (०0) Greisenisation
(d) Beach placers
(e) Diagnostic properties of gold
(f) Cool Bed Methane
(g) Pathfinder elements
(h) Exclusive Economic Zone
Q2.Write short notes on any four of the following : 4x5=20
(a) Tectonic classification of ore deposits
(b) Supergene enrichment
(c) Classification of hydrothermal deposits
(d) Residual concentration and deposition of economic minerals
(e) Physical and diagnostic properties of galena
(f) Varieties and ranks of coal
(g) Geobotanical exploration
Q3.Answer any one of the following: 1x10=10
(a) What are the differences between syngenetic and epigenetic ore deposits ? Discuss with suitable examples.
(b) Discuss the factors controlling wall rock alteration with examples of any three types.
Q4.Answer any one of the following :
(a)
(i) Discuss any three types of placer deposits with examples. 5 (ji) Give an account of origin, migration and accumulation of petroleum. 5
(b)
(i) Discuss the Conventional Geo- chemical Exploration methods. 5 Gi) Describe ore depositions at constructive boundaries. 5 aif |