COMEDK2013ChemistrySurface Chemistry
Pick out the statement which is not relevant in the discussion of colloids
Options
- Asodium aluminium silicate is used in the softening of hard water.
- Bpotash alum is used in shaving rounds and as a styptic in medicine.
- Cartificial rain is caused by throwing electrified sand on the clouds from an aeroplane.
- Ddeltas are formed at a place where the river pours its water into the sea.
Correct answer
A. sodium aluminium silicate is used in the softening of hard water.
Step-by-step solution
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.