26. Which metal is used in the manufacture of thermometers?
A) Mercury
B) Nickel
C) Chromium
D) Cobalt
27. What is the most malleable metal?
A) Copper
B) Silver
C) Gold
D) Platinum
28. Which metal is known as quicksilver?
A) Lead
B) Mercury
C) Zinc
D) Aluminium
29. Which metal is the best conductor of electricity?
A) Copper
B) Aluminium
C) Silver
D) Gold
30. Which metal is used in the manufacture of aircraft parts due to its light weight?
A) Aluminium
B) Iron
C) Copper
D) Zinc