Unit 31: Materials and Energy — Mcqs

Q1.I.A mining engineer discovers a new deposit of a metal that occurs primarily as a carbonate. Which sequence is most efficient for the extraction of metals?

Q1.II.The extraction of aluminium from its oxide is done by electrolysis and not by calcination because:

Q1.III.Which property makes ceramics suitable for furnace bricks?

Q1.IV.In fiberglass, the matrix mainly:

Q1.V.Major limitation of mechanical recycling is:

Q1.VI.The mobile phone recycling is difficult because of:

Q1.VII.Chemicals from coal used in dyes are:

Q1.VIII.Nuclear fission involves: