Type the number

Exercise and reference answers

Questions

1. Answer

   6

   Question

   Refining methods listed for metals

2. Answer

   4

   Question

   Percentage of carbon in pig iron, about

3. Answer

   2

   Question

   Electrodes used in electrolytic refining

4. Answer

   1

   Question

   Ends of the rod where impurities gather in zone refining

5. Answer

   1

   Question

   Principal ores of aluminium used for extraction

6. Answer

   2

   Question

   Conditions a compound must meet for vapour phase refining

Instructions

Type the number only.

Explanation