Biology: Vitamins and Deficiency Diseases
Questions on chemical names of vitamins and their corresponding deficiency diseases are an SSC fixture:
- Vitamin A (Retinol): Night Blindness, Xerophthalmia.
- Vitamin B1 (Thiamine): Beriberi | B2 (Riboflavin): Cheilosis | B3 (Niacin): Pellagra.
- Vitamin B12 (Cyanocobalamin): Pernicious Anemia (contains Cobalt mineral).
- Vitamin C (Ascorbic Acid): Scurvy, bleeding gums.
- Vitamin D (Calciferol): Rickets in children, Osteomalacia in adults.
- Vitamin K (Phylloquinone): Delayed blood clotting.
Key Strategy Takeaway
Remember that Vitamins B and C are water-soluble; Vitamins A, D, E, K are fat-soluble.
Chemistry: Everyday Compounds & Chemical Names
Memorize standard common names and formulas:
- Baking Soda: Sodium Bicarbonate (NaHCO₃).
- Washing Soda: Sodium Carbonate Decahydrate (Na₂CO₃·10H₂O).
- Bleaching Powder: Calcium Hypochlorite (CaOCl₂).
- Plaster of Paris: Calcium Sulfate Hemihydrate (CaSO₄·½H₂O).
- Gypsum: Calcium Sulfate Dihydrate (CaSO₄·2H₂O).
- Laughing Gas: Nitrous Oxide (N₂O).
Physics: SI Units & Discoveries
SI units of Luminous Intensity (Candela), Magnetic Flux (Weber), Magnetic Flux Density (Tesla), Inductance (Henry), and Work/Energy (Joule).