69th BPSC Prelims (2023), question 91

🌍 Geography

91. Match Bihar rock systems: a. Dharwar, b. Vindhyan, c. Quaternary, d. Tertiary with 1. Rapid alluvium deposition by Himalayan/Peninsular rivers, 2. Found in West Champaran, 3. Part of oldest Archaean system, 4. Sandstone/limestone/dolomite/quartzite/shale.

    1. a-3, b-4, c-1, d-2
    2. a-1, b-3, c-2, d-4
    3. a-2, b-3, c-4, d-1
    4. a-4, b-2, c-3, d-1
    Show answer

    Answer: A — a-3, b-4, c-1, d-2

    Dharwar = oldest Archaean, Vindhyan = sandstone/limestone etc, Quaternary = rapid alluvium deposition, Tertiary = found in West Champaran.