The percentage of chlorine in fresh bleaching powder is about
A. 10 to 15
B. 20 to 25
C. 30 to 35
D. 40 to 50
Answer:C
The percentage of chlorine in fresh bleaching powder is about
A. 10 to 15 B. 20 to 25 C. 30 to 35 D. 40 to 50