MPSC Rajyaseva 2025 GS Paper 1 — Question 24
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खालीलपैकी कोणता खडकंचा प्रकार रासायनिक प्रक्रियेद्वारा निर्मित जलजन्य खडक आहे ? / Which of the following rock types is a hydrous rock formed by chemical processes ?
1)जिप्सम / Gypsum✓ Correct
2)शेल / Shale
3)ग्रॅनाईट / Granite
4)पंकाश्म / Pumice
Gypsum (hydrated calcium sulphate) is a chemically formed sedimentary rock: it crystallises out when water in seas or salt lakes evaporates, and it holds water in its structure. Shale is a mechanically formed sedimentary rock (compacted clay), granite is an intrusive igneous rock, and pumice is a volcanic igneous rock.
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