Explanation
In a reaction, catalyst changes ___________
Emulsions can be broken into constituent liquids by heating, freezing, and centrifuging.
Hence, Option "B" & "D" are the correct answers.
Negatively charged emulsion can be precipitated by the oppositely charged electrolyte. $$\mathrm{Na}^{+}$$ and $$\mathrm{K}^{+}$$ from the electrolyte can neutralize the negatively charge emulsion and precipitate the colloid.
Hence, options "A" & "D" are correct answers.
The formation of micelles takes place only above a particular temperature called Kraft temperature $$\left(\mathrm{T}_{\mathrm{k}}\right)$$ and above aparticular concentration called critical micelle concentration (CMC). On dilution, these colloids revert back to individual ions.
Hence, Options "B" & "C" are correct answers.
Temporary hardness can be removed by mixing water with slaked lime, this process is known as softening of water.
Soaps are formed by the reaction of alkaline, fats, and oils. These are the sodium salts of fats and oils. Fats and oils can easily be broken down into simple molecules by microbes and hence soaps are biodegradable.
Detergents are synthetic compounds generally ammonium or sulfate salts of long chain carboxylic acids. These synthetic compounds cannot be broken down into simple molecules by microbes and hence detergents are non-biodegradable.
If detergents have a straight chain, then it could be easily be broken by molecules.
Please disable the adBlock and continue. Thank you.
