Vitamins — Fat soluble vs water soluble
Biomolecules
8
JEE Qs
8%
Hard
45
min
Create a concise table summarizing each vitamin's solubility, key function, and deficiency disease; prioritize memorization of this table for quick recall in exams.
✅ Key Points for JEE
- 1Vitamins are organic compounds required in small quantities for normal growth and metabolic functions; they are classified primarily by their solubility.
- 2Fat-soluble vitamins (A, D, E, K) are stored in the body's adipose tissue and liver; excessive intake can lead to hypervitaminosis (toxicity) due to accumulation.
- 3Water-soluble vitamins (B-complex and C) are generally not stored in the body (except Vitamin B12) and are readily excreted in urine, necessitating regular dietary intake.
- 4Memorize specific examples of vitamins within each solubility category and their primary deficiency diseases (e.g., A - night blindness, C - scurvy, D - rickets, B1 - beriberi).
- 5Many B-complex vitamins function as coenzymes, essential for various metabolic pathways, making their study crucial for understanding biochemical reactions.
⚠️ Common Mistakes
- ✕Incorrectly classifying vitamins as fat-soluble or water-soluble, especially for less common B-complex vitamins.
- ✕Confusing the deficiency diseases associated with different vitamins, particularly among the B-complex group due to similar symptoms.
- ✕Overlooking the concept of hypervitaminosis (toxicity) for fat-soluble vitamins, assuming all vitamins are harmless in excess.
📝 Practice Questions
See allQ51.Given below are two statements: Statement I: Fructose does not contain an aldehydic group but still reduces Tollen's reagent Statement II: In the presence of base, fructose undergoes rearrangement to give glucose. In the light of the above statements, choose the correct answer from the options given below (1) Both Statement I and Statement II are true (2) Both Statement I and Statement II are false (3) Statement I is true but Statement II is false (4) Statement I is true but Statement II is false
Q51.The carbohydrate "Ribose" present in DNA, is A. A pentose sugar B. present in pyranose from C. in "D" configuration D. a reducing sugar, when free E. in ∝-anomeric form Choose the correct answer from the 2025 (24 Jan Shift 1) JEE Main Previous Year Paper options given below: (1) A, D and E Only (2) A, C and D Only (3) A, B and E Only (4) B, D and E Only
Q60.Which of the following acids is a vitamin? (1) Adipic acid (2) Ascorbic acid (3) Saccharic acid (4) Aspartic acid
Q61.Identify the number of structure/s from the following which can be correlated to D-glyceraldehyde. (1) four (2) one (3) two (4) three
Q59.The α-Helix and β - Pleated sheet structures of protein are associated with its : (1) tertiary structure (2) quaternary structure (3) secondary structure (4) primary structure ∣∣∣ ∣∣∣ ∣∣∣ ∣∣ 2025 (23 Jan Shift 2) JEE Main Previous Year Paper
Q51.Given below are two statements: Statement I : D-glucose pentaacetate reacts with 2, 4-dinitrophenylhydrazine Statement II : Starch, on heating with concentrated sulfuric acid at 100∘C and 2-3 atmosphere pressure produces glucose. In the light of the above statements, choose the correct answer from the options given below 2025 (28 Jan Shift 1) JEE Main Previous Year Paper (1) Statement I is false but Statement II is true (2) Both Statement I and Statement II are false (3) Both Statement I and Statement II are true (4) Statement I is true but Statement II is false
NCERT Chapters
- Class 12 Chemistry Ch 14: Biomolecules