The correct answer is B12.
- Cobalamin is the scientific name of B12.
Key Points
- Vitamins:
- It was first invented by FG Hopkins.
- The term vitamin was coined by C Funk.
- Vitamins provide no calories, they only regulate chemical reactions occurring in the metabolism of the body.
- Water-soluble vitamins are Vitamin-B and Vitamin-C.
- Fat-soluble vitamins are Vitamin-A, Vitamin-D, Vitamin-E and Vitamin-K. {Trick to remember: KEDA does not dissolve in water}
- Vitamin-B12:
- Its chemical name is cobalamin.
- Cyanocobalamin is a man-made form of vitamin B12.
- Cobalt is found in Vitamin-B12.
- It is water-soluble.
- Its deficiency causes Pernicious anaemia.
- Its rich sources are Meat, poultry, fish, eggs, milk.
Additional Information
| Vitamin | Chemical Name | Deficiency Disease |
| Vitamin A | Retinol | Night blindness |
| Vitamin B1 | Thiamine | Beriberi |
| Vitamin B2 | Riboflavin | Ariboflavinosis, Glossitis |
| Vitamin B3 | Niacin, Nicotinamide | Pellagra |
| Vitamin B5 | Pantothenic | Paresthesia |
| Vitamin B6 | Pyridoxine | Anaemia |
| Vitamin B7 | Biotin | Dermatitis, enteritis |
| Vitamin B9 | Folic acid | Megaloblastic anaemia |
| Vitamin B12 | Cyanocobalamin | Pernicious anaemia |
| Vitamin C | Ascorbic acid | Scurvy |
| Vitamin D | Cholecalciferol | Rickets |
| Vitamin E | Tocopherols | Fertility disorders |


