A. diamond, wood
B. glass, table salt
C. wood, glass
D. sucrose. glass
Submitted by: Akhtar Saleem Sandhu
(Sponsored by Sir Tauqeer)
(Sponsored by Sir Tauqeer)
(Sponsored by Sir Tauqeer)
(Sponsored by Sir Tauqeer)
(Sponsored by Sir Tauqeer)
(Sponsored by Sir Tauqeer)
