Hamad Materials and Construction 10/03/2021 A. Aluminium B. Iron C. Lead D. Nickel Related Mcqs: Carbon is present in steel wholly in the__________________?A. Combined form B. Free state as graphite C. Both A. and B. D. Neither A. nor B.... _______________ is a donor impurity for semi-conductors ?A. Boron B. Antimony C. Gallium D. None of these... Presence of even very minute amount (say 0.1%) of ______________ in copper, reduces its electrical conductivity very seriously?A. Bismuth B. Arsenic C. Antimony D. Both B. and C.... Polymerisation reactor used for the production of styrene butadiene rubber (SBR) is made of__________________?A. Cast iron B. Stainless steel or glass lined vessel C. Karbate D. Wrought iron... Acetaldehyde is shipped in ____________ drums?A. Cast iron B. Steel C. Aluminium D. Either B. & C....
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