Question

Calciferol is the name of

• A. Vitamin A
• B. Vitamin C
• C. Vitamin B2
• D. Vitamin D2

Hint:

Calciferol is also known as Vitamin D2, which is important for calcium absorption and bone health.

Answer 1

The Correct Option is D

Step 1: Identifying calciferol.
Calciferol is the chemical name for Vitamin D2. It is a form of Vitamin D that is used to prevent or treat Vitamin D deficiency. Vitamin D2 is commonly obtained from plant sources and is often used in supplements.
Step 2: Analyzing the options.
(A) Vitamin A: This is not correct as calciferol is Vitamin D, not Vitamin A.
(B) Vitamin C: This is incorrect. Vitamin C is a separate vitamin that is involved in collagen synthesis.
(C) Vitamin B2: This is incorrect, as Vitamin B2 refers to riboflavin, not calciferol.
(D) Vitamin D2: Correct — Calciferol is the name for Vitamin D2.
Step 3: Conclusion.
The correct answer is (D) Vitamin D2 as calciferol is another name for Vitamin D2.

Answer 2

"Calciferol" is a chemical name, and breaking down what the name itself implies, then checking it against each vitamin's known identity and function, helps confirm the right answer.

1. Vitamin A: Vitamin A's chemical names are retinol, retinal, and related retinoids, which relate to vision and the retina - the term "calciferol" has no connection to this group.
2. Vitamin C: Vitamin C's chemical name is ascorbic acid, referring to its anti-scorbutic (anti-scurvy) property, again unrelated to "calciferol."
3. Vitamin B2: Vitamin B2's chemical name is riboflavin, derived from "ribose" (a sugar) and "flavin" (a yellow pigment group), which has no link to "calciferol" either.
4. Vitamin D2: The name "calciferol" is built from "calc-" (referring to calcium) and "-ferol" (a suffix common to vitamin/sterol names), directly reflecting Vitamin D2's central role in calcium absorption and bone metabolism. This etymology matches Vitamin D2 specifically (as opposed to Vitamin D3, which is called cholecalciferol).

Breaking down the name itself points to the vitamin tied to calcium regulation.

Therefore, the correct answer is Vitamin D2.