Teaching DSSSB TGT Mock Test 2025 General Science Chemistry Basic Concepts of Chemistry

Na2CO3.10 H2O के सूत्र इकाई द्रव्यमान की गणना कीजिये। [परमाणु द्रव्यमान को देखते हुए: Na = 23.0 u, C = 12.0 u, O = 16.0 u, और H = 1.0 u]

1
124 u
2
286 u
3
426 u
4
254 u
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