A) urea
B) blood
C) cane sugar
D) \[NaCl\]
Correct Answer: B
Solution :
Blood is an example of colloid. Particles which range between 1 nm - 100 nm form colloidal solution. It is a heterogeneous solution. Urea, cane sugar and \[NaCl\] are crystalloids i.e., form true solution. Crystalloids can easily pass through parchment membranes while colloids do not diffuse or diffuse slowly.
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