Which among the following vitamins belongs to the aliphatic series?

The deficiency of vitamin $x$ causes beri beri and deficiency of vitamin $y$ causes convulsions. What are $x$ and $y$ respectively?

The deficiency of vitamin $(X)$ causes convulsions. Source of $X$ is $Y$. What are $X$ and $Y$?

Which of the following is a bone disease caused by a virus?

Which of the following vitamins is water-soluble?

Scurvy is caused due to deficiency of which vitamin?