Question:
Which one of the following statements is NOT correct?
Which one of the following statements is NOT correct?
Options:
- a) The molecules of soap are sodium or potassium salts of long-chain fatty acids.
- b) The molecules of soap contain both hydrophobic and hydrophilic ends.
- c) Detergents are more effective than soaps in hard water.
- d) In micelles the ionic-end of the molecules is towards oil droplet while the other end faces outside.
- a) The molecules of soap are sodium or potassium salts of long-chain fatty acids.
- b) The molecules of soap contain both hydrophobic and hydrophilic ends.
- c) Detergents are more effective than soaps in hard water.
- d) In micelles the ionic-end of the molecules is towards oil droplet while the other end faces outside.
correct answer : d)
Explanation:
In soap micelles, the hydrophilic ionic head faces outward (towards water) while the hydrophobic hydrocarbon tail points inward (towards the oil droplet). Statement (d) is incorrect.
In soap micelles, the hydrophilic ionic head faces outward (towards water) while the hydrophobic hydrocarbon tail points inward (towards the oil droplet). Statement (d) is incorrect.