Question

Vitamin that is destroyed on heating is
a. Vitamin C
b. Vitamin A
c. Vitamin K
d. Vitamin D

Answer 1

Vitamins are micronutrient required for proper growth and development of any organism. These are required in small quantities for proper functioning of various metabolic processes taking place inside organisms.

Complete answer:
Vitamin Dis also called as sunshine vitamin or calciferol. It is a fat soluble vitamin. It is synthesized by our body itself using cholesterol. In presence of sunlight, our skin converts the precursor of vitamin D into active Vitamin D. It is required for the absorption of calcium phosphorus and magnesium in our intestine.

Vitamin C is a water soluble vitamin. It is mainly found in fruits like lemon, orange, gooseberry, and vegetables. It works like an antioxidant which removes toxic free radicals from our body. It helps to improve the immunity of our body and keep skin healthy. It is sensitive to light, heat and air. It can be destroyed during food preparation, cooking and prolong storage.

Vitamin A is a group of similar compounds like retinal, retinol, retinoic acid etc. It is a fat soluble vitamin that is found in yellow fruit like papaya, carrots, liver, milk, vegetables, etc. This vitamin is very important for the immune system, eye and vision. Its deficiency causes night blindness.

Vitamin K or clotting vitamin is also called phylloquinone or menaquinone. It is a fat soluble vitamin that plays a role in blood clotting. The sources of vitamin K are green leafy vegetables, fish, liver, meet, egg, cereals, etc.

Hence, the correct answer is option (B).

Note: Deficiency of vitamin causes deficiency diseases and they are not stored in the body for long duration, hence, they need to be taken through our diet regularly. Here Vitamin C can be exposed to air as well as easily destroyed by heat and water, whereas Vitamin D, A and K can not be destroyed on heating.