Question

Presence of even 0.005% of __________ in copper makes it highly brittle, rendering it useless for wire-drawing.

a.

oxygen

b.

arsenic

c.

antimony

d.

bismuth

Answer: (d).bismuth

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Q. Presence of even 0.005% of __________ in copper makes it highly brittle, rendering it useless for wire-drawing.

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