Q.

The most abundant metal in earth’s crust is:


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a

Iron

b

Magnesium

c

Calcium

d

Aluminium 

answer is D.

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Detailed Solution

concept - Earth’s crust is a shell on the outside of the earth.  It makes up less than half of 1 per cent of the planet's total mass but plays a vital role in most of Earth's natural cycles.
The Earth's crust is an extremely thin layer of rock that forms the outer solid envelope of our planet. In relative terms, its thickness is like the skin of an apple.
Oxygen, silicon, and aluminium are the elements that are most commonly found in the earth's crust. Oxygen is the most abundant element in the earth's crust. Aluminium is the most abundant metal in the earth’s crust followed by iron. And oxygen is the most abundant non-metal in the earth’s crust.
Hence, option 4 is correct.
 
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