Which of the following is a use of alum?
Making explosives
Bleaching clothes
Water softening
All of the above
C.
Water softening
Alums are used as water-softner. These are also used in tanning of leather, as mordant in dyeing and to stop bleeding.
Among the following, the narrow spectrum antibiotic is :
Ampicillin
Amoxycillin
Chloramphenicol
Penicillin G
