I am an essential elements for human nutrition, critical for blood cell formation, proper growth of bone, brain, heart and so on. My excess in humans can cause Jaundice Anemia and nerve damage . I am one of the first three metals work upon by man. I am _____.
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it is _______An object is kept in front of the convex mirror on the principal axis as shown in figure. Radius of curvature of the mirror is 40cm, then the position of the image
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iron ..............
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