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3. Metals and Non-metals
medium
નીચેનાં પદોને વ્યાખ્યાયિત કરો :
$(i)$ ખનીજ $(ii)$ કાચી ધાતુ (અયસ્ક) $(iii)$ ગેંગ
Option A
Option B
Option C
Option D
Solution
$(i)$ Mineral : Most of the elements occur in nature as in combined state as minerals. The chemical composition of minerals is fixed.
$(ii)$ Ore : Minerals from which metals can be extracted profitably are known as ores.
$(iii)$ Gangue: The impurities (sand, silt, soil, gravel, etc.) present in the ore are called gangue.
Standard 10
Science
