A) 0.25
B) 0.025
C) 2.5
D) 25
E) 250
Correct Answer: E
Solution :
Gold number is the number of milligrams of a hydrophilic colloid that will just prevent the coagulation of 10 mL of a gold sol on addition of 1 mL of 10%\[NaCl\]solution. \[\therefore \] Gold number \[=0.25\times 1000=250\]You need to login to perform this action.
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