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 C=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 options given below

Solution & Explanation

Answer: (C) (c), (d) and (e) only. Solution: Checking each statement against NCERT: (a) is wrong because lecithin is a phospholipid, not a glycolipid; (b) is wrong because it is unsaturated (not saturated) fatty acids that possess one or more C=C bonds. (c) is correct — oils like gingelly oil have a lower melting point and stay liquid in winter; (d) is correct — lipids are generally water-insoluble but dissolve in organic solvents; (e) is correct — a single fatty acid esterified with glycerol gives a monoglyceride. Hence the correct set is (c), (d) and (e). NCERT Reference: Ch 9, p.106, line ~24 — "These are also called fats and oils based on melting point. Oils have lower melting point (e.g., gingelly oil) and hence remain as oil in winters."