पृथ्वी की सतह के नीचे पिघली हुई चट्टान को क्या कहते हैं? - Molten rock below the surface of the Earth is called? - Prithvi Ki Satah Ke Niche Pighli Hui Chattan Ko Kya Kehte Hain ? Gen Science GS in hindi, question answers in hindi pdf questions in hindi, Know About Gen Science GS online test Gen Science GS notes in hindi quiz book
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