UPSC GeoScientist 2021 Question Paper
Combined Geo-Scientist (Preliminary) Examination, 2021 paper I Combined Geo Scetntis(P)E, 2021(P-I) 1. Which one of the following pairs of elements is found in the free state? (a) Gold and Platinum (b) Copper and Silver (c) Gold and Silver (d) Copper and Platinum 2. Why silver chloride turns grey in Sunlight? (a) It forms silver metal […]