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प्रश्न
A number of elements are available in earth’s crust but most abundant elements are ______.
विकल्प
\[\ce{Al}\] and \[\ce{Fe}\]
\[\ce{Al}\] and \[\ce{Cu}\]
\[\ce{Fe}\] and \[\ce{Cu}\]
\[\ce{Cu}\] and \[\ce{Ag}\]
MCQ
रिक्त स्थान भरें
उत्तर
A number of elements are available in earth’s crust but most abundant elements are \[\ce{Al}\] and \[\ce{Fe}\].
Explanation:
Among metals, aluminium is the third most abundant element in earth's crust (8.3% approx. by weight). It is major component of many igneous minerals including mica and clays. Iron is the second most abundant metal in the earth's crust.
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