Civil Services UPSC EPFO (APFC) Mock Test 2023 General Science Chemistry Solutions

નાઇટ્રોજનનું પરમાણુ દળ 14 છે અને હાઇડ્રોજનનું 1 છે. એમોનિયાનો અણુભાર કેટલો હશે?

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