Q.
Ferric chloride is applied to stop bleeding cut because
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a
Fe3+ ion coagulates blood, which is a negatively charged sol
b
Fe3+ ion coagulates blood, which is a positively charged sol
c
Cl- coagulates blood, which is a positively charged sol
d
Cl- ion coagulates blood, which is a negatively charged sol
answer is A.
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Detailed Solution
FeCl3 is an electrolyte that gives Fe3+ and blood contains negatively changed colloid. Hence, it stops bleeding due to coagulation.
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