state gov TSPSC Group 2 (తెలంగాణ గ్రూప్ 2) Mock Test Series General Science Chemistry Periodic Table
Which of the following statement(s) is/are correct?
(a) Willemite is a chief ore of copper.
(b) Zinc blende is the chief ore of zinc.
(c) Autoreduction process is used for metals like Cu, Pb, etc.
(d) More reactive metals belonging to s-block are extracted through carbon smelting.
1
a and b
2
a, b and c
3
b and c
4
All are correct