Which of the following is not a bleaching agent?
A. Sodium hypochlorite
B. Calcium hypochlorite
C. Hydrogen peroxide
D. Hydrogen sulphide
1
D
2
C
3
A
4
B
Which of the following is not a bleaching agent?
A. Sodium hypochlorite
B. Calcium hypochlorite
C. Hydrogen peroxide
D. Hydrogen sulphide