COMEDK · Chemistry · 20. Surface Chemistry
Pick out the statement which is not relevant in the discussion of colloids
- A sodium aluminium silicate is used in the softening of hard water.
- B potash alum is used in shaving rounds and as a styptic in medicine.
- C artificial rain is caused by throwing electrified sand on the clouds from an aeroplane.
- D deltas are formed at a place where the river pours its water into the sea.
Answer & Solution
Correct Answer
(A) sodium aluminium silicate is used in the softening of hard water.
Step-by-step Solution
Detailed explanation
The statement that, sodium aluminium silicate is used in softening of hard water is not relevant with colloids. It is a substitution reaction of calcium salts with zeolite.
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