Question: 132: Read the following statements on lipids and find out correct set of statements:
(a) Lecithin found in the plasma membrane is a glycolipid
(b) Saturated fatty acids possess one or more \mathrm{C}=\mathrm{C} bonds
(c) Gingely oil has lower melting point, hence remains as oil in winter
(d) Lipids are generally insoluble in water but soluble in some organic solvents
(e) When fatty acid is esterified with glycerol, monoglycerides are formed
Choose the correct answer from the option given below:
(1) (c), (d) and (e) only
(2) (a), (b) and (d) only
(3) (a), (b) and (c) only
(4) (a), (d) and (e) only
Answer: Option (1)
Explanation:
Lecithin is a phospholipid and not a glycolipid, so statement (a) is incorrect.
Saturated fatty acids do not contain any \mathrm{C}=\mathrm{C} double bonds;
they have only single bonds, hence statement (b) is incorrect.
Gingely oil is rich in unsaturated fatty acids, which have lower melting points,
so it remains in liquid form even in winter, making statement (c) correct.
Lipids are hydrophobic in nature and are generally insoluble in water but soluble in organic solvents
like ether, chloroform, and benzene, so statement (d) is correct.
When one fatty acid molecule is esterified with glycerol, a monoglyceride is formed,
making statement (e) correct.
Therefore, the correct set of statements is (c), (d), and (e),
corresponding to Option (1).