Which of the following metals forms a saline hydride?

Binomial nomenclature means

Which of the following is not a fat-soluble vitamin?

Let $Z$ denote the set of integers. Define $f: Z \rightarrow Z$ by $f(x) = \begin{cases} \frac{x}{2}, & x \text{ is even} \\ 0, & x \text{ is odd} \end{cases}$. Then $f$ is:

Which of the following kingdoms includes multicellular producers?

Identify the incorrect pair from the following.