31. This element is used in making jewelries and
medals.
A. Ni
C. Au
B. Cu
D. Sn
32. It is used for disinfection such cleansing water.
A.F
C. He
B. CI
D. Sb
33. Which of the following is the best conductor of
electricity?
A. Mg
C. Zn
B. A!
D. Ag
34. This element is found in banana fruit.
A. Li
C.K
В. С
D. P.
35. It is the most abundant element in the planet.
Α. Η
C. He
B. O
D. Ca​