Question

5. Which among the following is the most reactive metal?
(a) Magnesium
(b) Calcium
(c) Zinc
(d) Aluminium
6. Solder is an alloy of
(a) Cu and Zn
(b) Cu and Sn
(c) Pb and Sn
(d) Pb and Zn​

Answer 1

5) b calcium

6) a cu and zn

Hope it helps

Answer 2

Answer:

(a)calcium

(b)pb and sn