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