Question
Download Solution PDFThe correct option among the following is:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
1. Colloidal medicines:
Medicines are more effective in colloidal state because colloids have a larger surface area. Thus, they get easily assimilated, absorbed and digested.
Thus, option (a) is wrong.
2. Addition of alum:
Alum is used in the form of Aluminium Sulphate (usually) to remove particulates in water through flocculation to remove solids and some ions and allow them to be filtered or settled. This process is a part of water treatment process.
Excess of alum can make water unfit for drinking but in terms of excess is not mentioned in the option.
Thus, option (b) is wrong.
3. Electrophoresis:
The coagulation of lyophobic sols can be done by electrophoresis where the colloidal particles move towards oppositely changed electrodes which gets discharged and forms precipitate.
Thus, option (c) is correct.
4. Brownian motion:
The viscosity is also inversely proportional to the speed of Brownian motion. So, lesser the viscosity, faster the motion.
Thus, option (d) is wrong.
Hence, option (c) is the only correct statement.Last updated on May 23, 2025
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