Metals

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46. What is the main use of copper?
a) Electrical wiring
b) Construction
c) Manufacturing of automobiles
d) Making jewelry

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47. Which of the following metals is a good conductor of electricity?
a) Iron
b) Aluminium
c) Lead
d) Gold

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48. Which of the following metals is used to make coins?
a) Iron
b) Silver
c) Aluminium
d) Zinc

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49. What is the most commonly used metal in the production of steel?
a) Iron
b) Aluminium
c) Copper
d) Nickel

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50. Which of the following metals is a noble metal?
a) Iron
b) Copper
c) Platinum
d) Aluminium

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